Student Name Chamberlain University NR-283: Pathophysiology Prof. Name Date The Pathophysiologic Processes of Hypothyroidism Hypothyroidism is a medical condition characterized by the thyroid gland’s inadequate production of thyroid hormones required to fulfill the body’s physiological demands. These hormones play essential roles in regulating multiple bodily functions including respiration, heart rate, metabolic rate, menstrual cycles, body temperature, blood pressure, and mood stabilization. Therefore, an imbalance or deficiency in thyroid hormone production significantly disrupts daily bodily functions. Thyroid hormones directly influence the pace of various bodily processes—excess production accelerates heart rate and metabolism, while insufficient production results in their reduction. According to the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK, 2021), approximately 5% of Americans aged 12 and older experience hypothyroidism, with most cases being mild or asymptomatic. Etiology and Risk Factors What causes hypothyroidism? Hypothyroidism arises from multiple etiologies. The primary cause is Hashimoto’s thyroiditis, an autoimmune disorder wherein the immune system produces antibodies that attack the thyroid gland, leading to inflammation and impaired hormone production. Iodine deficiency is another significant cause, as iodine is critical for thyroid hormone synthesis (Pathak, 2020). Additionally, certain medications such as those for heart conditions and cancer can interfere with hormone production. Which populations are more at risk? Women, particularly those over 60 years, exhibit a higher prevalence of hypothyroidism. According to Chiovato et al. (2019), women are 8 to 9 times more likely to be affected than men. Prevalence rates in the U.S. indicate that 4% of women aged 18–24 and 21% of women aged 60 and older have hypothyroidism, compared to 3% and 16% in men of the same age groups, respectively. Other risk factors include family history, presence of other autoimmune diseases (such as type 1 diabetes, celiac disease, rheumatoid arthritis, multiple sclerosis, and anemia), racial background (more common among White and Asian individuals), thyroid surgery, and treatments involving radioactive iodine or anti-thyroid drugs. Congenital hypothyroidism occurs when the thyroid gland is underdeveloped or dysfunctional at birth (Cleveland Clinic, 2020). How do lifestyle and environmental factors influence hypothyroidism? Excessive iodine intake, through supplements or diet, may worsen hypothyroidism. People with this condition are advised to moderate consumption of soy products, walnuts, iron, and calcium supplements, as these can interfere with thyroid hormone function. A sedentary lifestyle may also contribute to the disease progression. Pathophysiological Processes What is the role of the thyroid gland and how does hypothyroidism affect the body? The thyroid gland, located at the base of the neck and shaped like a butterfly, regulates metabolism through the production of hormones T4 (thyroxine) and T3 (triiodothyronine). These hormones influence how the body utilizes energy. The pituitary gland controls the thyroid via secretion of thyroid-stimulating hormone (TSH), which prompts hormone production. In hypothyroidism, the thyroid gland’s reduced hormone output slows metabolism, affecting body temperature, heart rate, energy levels, brain function, reproductive health, and digestion (Cleveland Clinic Medical Professional, 2020). Clinical Manifestations and Complications What symptoms and signs are associated with hypothyroidism? Hypothyroidism symptoms vary widely and often develop gradually, leading to delayed diagnosis. Common manifestations include fatigue, constipation, elevated cholesterol, dry and thinning hair, sensitivity to cold, irregular menstruation, depression, slow heart rate, hoarseness, decreased sweating, female infertility, joint pain, and stiffness. More apparent signs include weight gain, puffy face, dry skin, and goiter (WebMD, 2020). What are the potential complications if hypothyroidism remains untreated? Untreated hypothyroidism may result in serious complications such as cardiac problems, goiter, infertility, balance difficulties, obesity, mental health disorders, joint pain, peripheral neuropathy, and respiratory issues. The most severe complication is myxedema, a potentially fatal condition marked by severe hypothyroid symptoms leading to coma or loss of consciousness (WebMD, 2020). Diagnostics How is hypothyroidism diagnosed? Diagnosis primarily relies on blood tests measuring levels of TSH, T4, T3, and thyroid antibodies because symptoms can overlap with other conditions. Blood samples are typically drawn from a vein in the arm and sent to a laboratory for analysis. Patients should inform their healthcare providers about any medications or supplements they take, such as blood thinners or biotin, as these can affect test results (MedlinePlus, 2019). Treatment and Management What treatment options exist for hypothyroidism? The mainstay of hypothyroidism treatment is hormone replacement therapy using levothyroxine, a synthetic form of the thyroid hormone. This medication is usually taken daily on an empty stomach, ideally 30 minutes to an hour before eating, and must be spaced out from antacids, iron, or vitamin/mineral supplements by at least four hours. Treatment is lifelong, requiring regular monitoring to maintain hormone levels within the normal range (WebMD, 2020). Patient Interview: Case Study of M.H. M.H., a 29-year-old African-American woman diagnosed with hypothyroidism in late 2017, experienced typical symptoms such as weight gain, fatigue, cold intolerance, irregular menstruation, constipation, hair thinning, and depression. Initially attributing her weight gain to hereditary factors, M.H. did not suspect a thyroid condition. Her diagnosis was complicated by inherited anemia. After beginning levothyroxine and iron supplementation, she reported improvements in cold sensitivity and menstrual regularity. M.H. faced challenges with medication adherence; she discontinued levothyroxine for nearly a year due to perceived ineffectiveness and persistent symptoms. The illness affected her daily life, contributing to low self-esteem and emotional distress despite lifestyle changes like diet and exercise. Support from family members was critical in her coping process. This case highlights the importance of sustained treatment adherence and the broad impact hypothyroidism has on physical and psychological health. Summary Table of Hypothyroidism Overview Aspect Details Definition Insufficient thyroid hormone production affecting multiple body functions Prevalence ~5% of Americans aged 12+, higher in women and elderly Major Causes Hashimoto’s thyroiditis, iodine deficiency, congenital defects, medications Risk Factors Female sex, age >60, autoimmune diseases, family history, race, thyroid surgery Symptoms Fatigue, constipation, weight gain, cold intolerance, dry skin, menstrual irregularities Complications Cardiac issues, infertility, myxedema, neuropathy Diagnosis Blood tests for TSH, T3, T4, thyroid antibodies Treatment Levothyroxine hormone replacement therapy Patient Management Notes Lifelong medication adherence, lifestyle adjustments, monitoring hormone levels References Baker, C. (2019, August 16). The effects of hypothyroidism on the

Student Name Chamberlain University NR-283: Pathophysiology Prof. Name Date Quiz 4 Concept List: Chapter 9 – Musculoskeletal System Disorders What is the pathophysiology of osteoporosis? Osteoporosis is characterized by an imbalance where bone resorption surpasses bone formation, leading to a loss of compact bone mass. This condition weakens the skeletal structure, increasing the risk of compression fractures, especially in the vertebrae, wrist, and hip. Diagnostic confirmation typically involves bone density scans. Structural changes in the spine such as kyphosis and scoliosis may develop due to vertebral compression. What are the risk factors associated with osteoporosis? Several factors increase the risk of osteoporosis, including: Muscular Dystrophy What is the pathophysiology of muscular dystrophy and its common manifestations? Muscular dystrophy involves a progressive degeneration of skeletal muscle tissue. Duchenne muscular dystrophy, the most prevalent form, follows an X-linked inheritance pattern primarily affecting males between ages 2 and 3. The disease progresses in an ascending pattern starting from the feet upwards, with early signs including motor weakness and pelvic girdle muscle impairment, which leads to a waddling gait and difficulties climbing stairs. The Gower maneuver, where the child uses their hands to push themselves upright, is a hallmark sign. Tendon reflexes diminish, and deformities such as kyphoscoliosis develop. Respiratory infections and cardiac myopathy are common complications due to muscular weakness. Osteoarthritis What is osteoarthritis and how does it develop? Osteoarthritis is a degenerative joint disease primarily caused by chronic wear and tear, often exacerbated by increased weight-bearing activities or repetitive lifting. Research indicates a genetic predisposition to the disease. Pathologically, the articular cartilage becomes roughened and worn, releasing enzymes that accelerate cartilage destruction. The subchondral bone can become exposed, resulting in cysts and osteophytes (bone spurs). As cartilage and osteophytes break off, the joint space narrows, secondary inflammation occurs, and joint motion becomes limited. Pain typically worsens with weight-bearing. What clinical signs and symptoms characterize osteoarthritis? Patients typically experience aching pain with joint movement and weight-bearing, restricted range of motion, and functional limitations. Walking becomes difficult, increasing the risk of falls. Temporomandibular joint involvement can cause difficulty with chewing and speech. Bony enlargements are often noted at the distal interphalangeal joints. NR 283 Quiz 4 How is osteoarthritis managed clinically? Management aims to reduce pain and improve joint function: Rheumatoid Arthritis (Swan Neck Deformity) What is the pathophysiology of rheumatoid arthritis? Rheumatoid arthritis (RA) is a chronic autoimmune disorder marked by synovitis with intense inflammation and cellular proliferation. Granulation tissue known as pannus invades and erodes cartilage, destabilizing the joint. The process leads to fibrosis and calcification, which can obliterate the joint space, and ultimately ankylosis, or joint fixation, with deformity if left untreated. NR 283 Quiz 4 What are the typical clinical manifestations of rheumatoid arthritis? Initial symptoms include redness, swelling, and tenderness in the fingers and wrists, with joint stiffness and impaired movement. Muscle atrophy and shifting bone alignment occur over time. Muscle spasms often arise due to pain and inflammation. TMJ involvement may cause malocclusion. Systemic symptoms include fatigue, depression, malaise, anorexia, low-grade fever, and iron deficiency anemia resistant to standard treatment. Chapter 16 – Endocrine System Disorders Type 1 Diabetes Mellitus What causes type 1 diabetes and what is its pathophysiology? Type 1 diabetes is an autoimmune condition leading to destruction of pancreatic beta cells and absolute insulin deficiency. Typically developing in childhood, this disease necessitates lifelong insulin therapy. Genetic factors contribute to its development. What are the major complications associated with type 1 diabetes? One critical complication is diabetic ketoacidosis (DKA), characterized by catabolism of fats and proteins, ketone production, metabolic acidosis, and ketonuria. Without prompt treatment, DKA can be life-threatening. What clinical symptoms indicate diabetes mellitus? The hallmark symptoms include: How is diabetes diagnosed? Diagnosis relies on: What are the primary treatment approaches for type 1 diabetes? Treatment combines: Hypoglycemia (Insulin Shock) What causes hypoglycemia in diabetic patients and what are the symptoms? Hypoglycemia often results from excess insulin, oral hypoglycemics, strenuous exercise, missed meals, vomiting, or dosing errors. Symptoms include disorientation, anxiety, altered behavior, low blood pressure, rapid heart rate, and decreased consciousness. Immediate treatment is critical to prevent brain damage. How is hypoglycemia treated in emergencies? If the patient is conscious, administer quick-absorbing carbohydrates like fruit juice or candy. If unconscious, intravenous administration of 50% glucose is necessary. Diabetic Ketoacidosis (DKA) What triggers DKA and what are its clinical signs? DKA results from insufficient insulin, often precipitated by infection, stress, dosing errors, dietary changes, alcohol, or exercise. Clinical signs include dry mouth, rapid weak pulse, hypotension, reduced urine output, acetone breath, deep Kussmaul respirations, lethargy, and decreased responsiveness. How is diabetic ketoacidosis managed? Treatment requires prompt insulin administration and fluid and electrolyte replacement to restore metabolic balance. Chronic Complications of Diabetes What are the long-term complications of diabetes? Chronic diabetes damages blood vessels of all sizes: Diabetes Insipidus and Syndrome of Inappropriate ADH (SIADH) Disorder Cause Symptoms Treatment Diabetes Insipidus Deficiency of ADH due to adenoma, injury, or genetic causes Excessive urination, thirst ADH replacement therapy SIADH Excessive ADH secretion, possibly tumor or stress-induced Fluid retention, hyponatremia Diuretics, sodium supplements Thyroid Disorders What are the features of hyperthyroidism? Hyperthyroidism is characterized by hypermetabolism and sympathetic nervous system overactivity. Patients may present with toxic goiter, exophthalmos, increased body temperature, sweating, soft silky hair, weight loss, insomnia, and hyperactivity. What causes hypothyroidism and what are its symptoms? Hypothyroidism may arise from iodine deficiency, autoimmune Hashimoto thyroiditis, tumors, or surgical removal of the gland. Congenital hypothyroidism (cretinism) results in short stature and severe developmental delay. Symptoms include goiter (in iodine deficiency), cold intolerance, weight gain, fatigue, decreased appetite, and in severe cases, myxedema, characterized by facial edema and a thickened tongue. Untreated severe hypothyroidism can cause myxedema coma, a life-threatening state. Chapter 25 – Immobility and Associated Problems What are the systemic effects of prolonged immobility? Body System Effects Urinary Urine stasis leading to kidney stones and UTIs; residual urine increasing infection risk Gastrointestinal Constipation, weakened defecation muscles, reduced appetite, delayed healing Cardiovascular Reduced venous return, orthostatic

Student Name Chamberlain University NR-283: Pathophysiology Prof. Name Date 1. A 25-year-old female is diagnosed with urinary tract obstruction. While planning care, the nurse realizes that the patient is expected to have hydronephrosis and a decreased glomerular filtration rate caused by: a. Decreased renal blood flowb. Decreased peritubular capillary pressurec. Dilation of the renal pelvis and calyces proximal to a blockaged. Stimulation of antidiuretic hormone 2. A 27-year-old male has a severe kidney obstruction leading to removal of the affected kidney. Which of the following would the nurse expect to occur? a. Atrophy of the remaining kidneyb. Compensatory hypertrophy of the remaining kidneyc. Dysplasia in the remaining kidneyd. Renal failure 3. A 55-year-old male presents reporting urinary retention. Tests reveal that he has a lower urinary tract obstruction. Which of the following is of most concern to the nurse? a. Vesicoureteral reflux and pyelonephritisb. Formation of renal calculic. Glomerulonephritisd. Increased bladder compliance 4. When a patient asks what the most common type of renal stones is composed of, how should the nurse respond? The most common type of renal stone is composed of: a. Magnesiumb. Struvitec. Calciumd. Phosphate 5. While planning care for a patient with renal calculi, the nurse remembers the most important factor in renal calculus formation is: a. Urine pHb. Body temperaturec. Genderd. Serum mineral concentrations NR 283 Quiz 3 6. A 24-year-old female is diagnosed with renal calculus that is causing obstruction. Which of the following symptoms would she most likely experience? a. Anuriab. Hematuriac. Pyuriad. Flank pain 7. A 25-year-old female presents with burning urination. She was diagnosed with a urinary tract infection. When the nurse checks the culture results, which of the following organisms is most likely infecting her urinary tract? a. Streptococcusb. Candida albicansc. Chlamydiad. Escherichia coli 8. A 35-year-old male received a traumatic brain injury in a motor vehicle accident. CT scan revealed a lesion above the pontine micturition center. Which of the following would the nurse expect? a. Dyssynergiab. Detrusor hyperreflexiac. Detrusor areflexiad. Detrusor sphincter dyssynergia 9. A 75-year-old male reports to his primary care provider loss of urine with cough, sneezing, or laughing. Which of the following is the most likely diagnosis the nurse will observe on the chart? a. Urge incontinenceb. Stress incontinencec. Overflow incontinenced. Functional incontinence 10. A 19-year-old female was involved in a motor vehicle accident during which she sustained a closed head injury. She is now experiencing detrusor sphincter dyssynergia. Which of the following is the most beneficial medication treatment? a. Alpha blockerb. Beta blockerc. Vasodilatord. Diuretic 11. A nurse assesses a patient with a complicated urinary tract infection (UTI) for: a. Several species of bacteriab. Other health problemsc. Urosepsisd. Urethral obstruction 12. A 28-year-old female presents with fever, chills, and flank pain. She is diagnosed with pyelonephritis. A nurse recalls the patient’s infection is located in the: a. Bladderb. Renal pelvisc. Renal tubulesd. Glomerulus 13. While planning care for a patient who has acute pyelonephritis, a nurse recalls the most common condition associated with the development of acute pyelonephritis is: a. Cystitisb. Renal cancerc. Urinary tract obstructiond. Nephrotic syndrome 14. A 29-year-old female presents with cloudy urine, flank pain, hematuria, and fever. Which of the following does the nurse suspect the patient is most likely experiencing? a. Acute cystitisb. Renal calculic. Chronic renal failured. Postrenal renal failure 18. A 30-year-old male is demonstrating hematuria with red blood cell casts and proteinuria exceeding 3 to 5 g/day, with albumin being the major protein. The most probable diagnosis the nurse will see documented on the chart is: a. Cystitisb. Chronic pyelonephritisc. Acute glomerulonephritisd. Renal calculi 19. A 45-year-old male presents with oliguria. He is diagnosed with chronic glomerulonephritis. The nurse knows oliguria is related to: a. Thickening of the glomerular membrane and decreased renal blood flowb. Increased glomerular capillary oncotic pressure and tubular obstructionc. Activation of renin-angiotensin from decreased blood volumed. Vasoconstriction of the efferent arterioles 20. A 54-year-old female is diagnosed with nephrotic syndrome. Which of the following is a common symptom of this disease? a. Hematuriab. Dysuriac. Oliguriad. Proteinuria NR 283 Quiz 3 21. A 42-year-old male is involved in a motor vehicle accident during which he loses a lot of blood. The nurse realizes he is in acute renal failure caused by: a. Kidney stonesb. Immune complex deposition in the glomerulusc. Inadequate renal blood flowd. Obstruction of the proximal tubule 22. A 35-year-old female was severely burned and is hospitalized. She is now suffering from acute tubular necrosis (ATN). Which of the following is the most likely diagnosis the nurse will observe on the chart? a. Prerenalb. Intrarenalc. Extrarenald. Postrenal 23. A 56-year-old male presents with flank pain and polyuria. Tests reveal that he has an enlarged prostate. Which of the following types of renal failure should the nurse monitor for as it is the most likely to occur? a. Prerenalb. Intrarenalc. Extrarenald. Postrenal 24. A 60-year-old male is diagnosed with renal failure. While the nurse is reviewing lab results, which of the following lab values would be most consistent with this diagnosis? a. Elevated plasma creatinine levelb. Decreased plasma potassium levelc. Metabolic alkalosisd. Increased urea clearance 25. A 45-year-old female presents with hypertension, anorexia, nausea and vomiting, and anemia. She is diagnosed with chronic renal failure. When the patient asks what caused this anemia, how should the nurse respond? Your anemia is caused by: a. Red blood cells being lost in the urineb. Inadequate production of erythropoietinc. Inadequate iron absorption in the gutd. Red blood cells being injured as they pass through the glomerulus 26. A 42-year-old female is diagnosed with chronic renal failure, and the nurse is discussing dietary treatment. Which information indicates the nurse understands dietary regimen? Treatment includes restricting: a. Fatsb. Complex carbohydratesc. Proteinsd. Sugars 27. While turning a patient with chronic renal failure, which principle should the nurse recall? Bone fractures are a risk factor in chronic renal failure because: a. Calcium is lost in the urineb. Osteoblast activity is excessivec. The kidneys fail to activate vitamin Dd.

Student Name Chamberlain University NR-283: Pathophysiology Prof. Name Date 1. What color sputum would most likely indicate a bacterial chest infection? Answer: d. Thick yellowishOptions:a. Clearb. Whitec. Frothyd. Thick yellowish 2. What happens in the lungs when the diaphragm and external intercostal muscles relax? Answer: a. Air is forced out of the lungs.Options:a. Air is forced out of the lungs.b. Lung volume increases.c. Intrapulmonic pressure decreases.d. Intrapleural pressure decreases 3. If blood oxygen levels decrease or if actual blood flow is reduced dramatically, a condition known as _______ occurs. Answer: c. cyanosisOptions:a. goosebumpsb. hypocapniac. cyanosisd. jaundice 4. Why do secondary infections frequently develop in pruritic lesions? Answer: b. Entry of resident flora while scratching the lesionOptions:a. Loss of protective sebumb. Entry of resident flora while scratching the lesionc. Blockage of sebaceous glandsd. Increased sweat production 5. Tinea capitis is an infection involving the: Answer: c. scalp.Options:a. trunk.b. feet.c. scalp.d. nails. 6. The maximum volume of air a person can exhale after a maximum inspiration is termed the: Answer: d. vital capacity.Options:a. expiratory reserve volume.b. inspiratory reserve volume.c. total lung capacity.d. vital capacity. 7. What would hypercapnia cause? Answer: c. Respiratory acidosisOptions:a. Increased serum pHb. Decreased respirationsc. Respiratory acidosisd. Decreased carbonic acid in the blood 8. Why are individuals susceptible to repeated infections with the influenza virus? Answer: d. Viral mutation reduces immunity from prior infections or vaccinations.Options:a. Elderly patients are predisposed to secondary infections.b. The virus is transmitted by numerous routes.c. The virus is very difficult to destroy.d. Viral mutation reduces immunity from prior infections or vaccinations. NR 283 Quiz 2 9. Persistent thick mucus in the bronchioles of a child with cystic fibrosis may cause: (select all that apply) Answer: a. obstruction of airflow in bronchioles and small bronchi.b. repeated infections.c. blockage of pancreatic and bile ducts.d. irreversible damage to lung tissue.Options:a. obstruction of airflow in bronchioles and small bronchi.b. repeated infections.c. blockage of pancreatic and bile ducts.d. irreversible damage to lung tissue. 10. What is a sign indicating total obstruction of the airway by aspirated material? Answer: b. Rapid loss of consciousnessOptions:a. Hoarse coughb. Rapid loss of consciousnessc. Dyspnead. Inflammation of the mucosa 11. The skin lesion of psoriasis is a(n): Answer: e. thick, scaly plaque.Options:a. non-scaling, violet-colored pruritic papule.b. nodule.c. pruritic vesicle.d. erythematous, butterfly-shaped rash.e. thick, scaly plaque. 12. In allergic individuals, the response to eating shellfish can be characterized: (select all that apply) Answer: a. as a Type I hypersensitivity reaction.c. by urticaria.d. as a disorder that potentially leads to anaphylaxis.Options:a. as a Type I hypersensitivity reaction.b. by the formation of keloids.c. by urticaria.d. as a disorder that potentially leads to anaphylaxis. 13. Many types of skin infections, for example cellulitis (erysipelas), furuncles (boils), and impetigo are usually caused by: Answer: c. Staphylococcus aureusOptions:a. a virulent strain of group A Streptococcus.b. Mycobacterium leprae.c. Staphylococcus aureusd. Pseudomonas aeruginosa 14. The usual manifestation of herpes simplex virus is: Answer: c. Cold sore or fever blisterOptions:a. A painful noduleb. Pustulec. Cold sore or fever blisterd. Fever 15. The cause of Kaposi sarcoma likely is: Answer: c. ImmunodeficiencyOptions:a. UV radiationb. Steroidal hormonesc. Immunodeficiencyd. Keratinization 16. A child is brought to the pediatrician with a history of lung infections and persistent cough. Tests reveal her sweat has a high salt content. These manifestations are consistent with a diagnosis of: Answer: c. Cystic fibrosisOptions:a. Tuberculosisb. Croupc. Cystic fibrosisd. Bronchogenic carcinoma 17. A patient with a diagnosis of lung cancer comes into the clinic with swelling in her face and arms. This is most likely caused by: Answer: c. the tumor blocking the superior vena cava with the increased hydrostatic pressure in the veins forcing fluids into the tissues.Options:a. the tumor blocking the superior vena cava and blood backing up, causing vasodilation of draining blood vessels and enlarged tissues from the extra blood.b. the tumor metastasizing to lymph nodes in the face and arms.c. the tumor blocking the superior vena cava with the increased hydrostatic pressure in the veins forcing fluids into the tissues.d. a type III hypersensitivity response to the tumor antigens. NR 283 Quiz 2 18. Match the disease with the characteristics: Answer:a. Pemphigus – c. an autoimmune disorder causing blistersb. Atopic dermatitis – d. commonly known as eczemac. Scabies – b. caused by a mited. Verrucae – a. caused by human papillomavirus 19. Match the characteristics with the disease. Answer:a. Deficit of pancreatic digestive enzymes – d. Cystic fibrosisb. May cause cavitation within lungs – b. Tuberculosisc. Characterized by episodic bronchospasm – c. Asthmad. Result of pharyngeal tissue collapse during sleep –  a. Apnea 20. Malignant melanoma develops from melanocytes in a nevus (moles). Skin cancer is suspected in any nevus that shows changes defined as the ABCD of melanoma. Identify the changes? Answer: Appearance (area), Border, Color, Diameter

Student Name Chamberlain University NR-283: Pathophysiology Prof. Name Date 1. Pathophysiology involves the study of: a. the structure of the human body.b. the functions of various organs in the body.c. functional or structural changes resulting from disease processes.d. various cell structures and related functions. 2. The number of new and old or existing cases in a specific population within a specified time period is called: a. prevalence.b. occurrence.c. incidence.d. abstinence. 3. The term prognosis refers to the: a. period of recovery and return to a normal state.b. expected outcome of the disease.c. mortality and morbidity rates for a given population.d. typical collection of signs and symptoms. 4. The manifestations of a disease are best defined as the: a. subjective feelings of discomfort during a chronic illness.b. signs and symptoms of a disease.c. factors that precipitate an acute episode of a chronic illness.d. early indicators of the prodromal stage of infection. 5. A short-term illness that develops very quickly with perhaps a high fever or severe pain is called: a. latent.b. chronic.c. manifestation.d. acute. 6. A situation when there is a higher than expected number of cases of an infectious disease within a given area is called a/an: a. epidemic.b. exacerbation.c. morbidity.d. pandemic. NR 283 Quiz 1 7. A deficit of oxygen in the cells usually due to respiratory or circulatory problems is called: a. apoptosis.b. ischemia.c. hypertrophy.d. necrosis. 8. Which of the following is the best definition of epidemiology? a. The science of tracking the occurrence and distribution of diseasesb. The relative number of deaths resulting from a particular diseasec. Identification of a specific disease through evaluation of signs and symptomsd. The global search for emerging diseases 9. A change in a tissue marked by cells that vary in size and shape and show increased mitotic figures (proliferation) would be called: a. metaplasia.b. atrophy.c. dysplasia.d. hypertrophy. 10. Which of the following is usually included in a medical history? a. 1, 3b. 2, 4, 5c. 1, 3, 4d. 1, 2, 3, 4, 5 11. When the hydrostatic pressure of the blood is elevated above normal, water would shift from the: a. blood into the interstitial compartment.b. interstitial compartment into the cells.c. interstitial compartment into the blood.d. cells into the interstitial compartment. 12. The control center for thirst is located in the: a. kidneys.b. thalamus.c. medulla.d. hypothalamus. 13. In the blood and extracellular fluids, hypernatremia refers to: a. a deficient sodium level.b. an excess phosphate level.c. an excess sodium level.d. an excessively low phosphate level. 14. Hypocalcemia causes weak cardiac contractions because: a. permeability of nerve membranes increases.b. insufficient calcium ions are available for muscle contraction.c. low phosphate ion levels prevent muscle contraction.d. excessive amounts of calcium are stored in cardiac muscle. 15. Which of the following is a common cause of hyponatremia? a. Excessive sweatingb. Excessive aldosterone secretionc. Prolonged period of rapid, deep respirationsd. Loss of the thirst mechanism 16. Which of the following would cause edema? a. Decreased capillary hydrostatic pressureb. Increased capillary osmotic pressurec. Decreased capillary permeabilityd. Increased capillary permeability NR 283 Quiz 1 17. Increased milk and/or antacid intake can contribute to development of “milk-alkali syndrome,” which can cause which of the following? a. Hyponatremiab. Hyperkalemiac. Hypercalcemiad. Hypovolemia 18. Hypokalemia refers to a condition in which the serum has a very low level of which ion? a. Sodiumb. Phosphatec. Calciumd. Potassium 19. Which of the following would result from a deficit of plasma proteins? a. Increased osmotic pressureb. Decreased osmotic pressurec. Increased hydrostatic pressured. Decreased hydrostatic pressure 20. Which of the following terms refers to a combination of decreased circulating blood volume combined with excess fluid in a body cavity? a. Third-spacingb. Hypovolemiac. Water retentiond. Dehydration

Student Name Chamberlain University NR-283: Pathophysiology Prof. Name Date Comprehensive Study Guide: Gastrointestinal & Urinary System Disorders Chapter 17 – Gastrointestinal System What is a Hiatal Hernia and what causes it? A hiatal hernia occurs when part of the stomach protrudes upward through the diaphragm into the thoracic cavity. There are two main types: sliding hernia and paraesophageal hernia. Causes: Signs/Symptoms: Complication: Strangulation of the herniated portion, requiring urgent surgery. Cause Signs/Symptoms Complications Weak diaphragm, short esophagus, ↑ abdominal pressure Heartburn, belching, dysphagia, chest pain Strangulation What is Acute Gastritis and what factors contribute to it? Acute gastritis is sudden inflammation of the stomach lining. Causes: Symptoms: Anorexia, nausea, vomiting, epigastric pain, fever, headache, diarrhea, hematemesis. What is Chronic Gastritis and who is at risk? Chronic gastritis involves thinning of the stomach mucosa with loss of secretory glands. Risk factors: Symptoms: Vague epigastric discomfort, poor appetite, intolerance to spicy/fatty meals. What is Peptic Ulcer Disease (PUD) and how does it present? Peptic ulcers are open sores in the stomach, duodenum, or lower esophagus. Causes: H. pylori, NSAIDs, excessive acid, impaired mucosal defenses. Symptoms: Ulcer Type Pain Timing Common Cause Duodenal Pain when stomach empty Excess acid Gastric Pain after meals Weak mucosal defenses What is Cholelithiasis (Gallstones) and who is at risk? Gallstones form from bile components in the gallbladder. Risk factors: Female sex, age >40, obesity, high cholesterol diet, multiple pregnancies, Native American descent, estrogen therapy. Symptoms: Often asymptomatic; biliary colic, RUQ pain radiating to shoulder/back, nausea, vomiting, jaundice. NR 283 Final Exam What are the different types of Hepatitis? Type Transmission Course HAV Fecal-oral Self-limiting HBV Blood, body fluids May become chronic HCV Blood Often chronic, risk of cirrhosis/cancer What is Hepatic Encephalopathy? Neurological impairment from buildup of toxins (especially ammonia) in advanced liver disease. Causes confusion, tremors, altered consciousness, coma. What is Cirrhosis and what complications may occur? Chronic irreversible scarring of the liver from alcohol, hepatitis, bile duct disorders, or metabolic disease. Complications: Portal hypertension, ascites, varices, encephalopathy, liver failure. What are Esophageal Varices? Dilated veins in the lower esophagus from portal hypertension; prone to rupture and massive bleeding. What is Crohn’s Disease and how does it differ from Ulcerative Colitis? Feature Crohn’s Disease Ulcerative Colitis Location Any GI tract segment Colon & rectum Pattern Patchy, transmural Continuous, mucosal Stool Non-bloody diarrhea Bloody diarrhea What is Appendicitis? Acute appendix inflammation from obstruction and infection. Causes RLQ pain, rebound tenderness, fever, nausea; risk of rupture and peritonitis. What is an Intestinal Obstruction? Blockage of intestinal contents due to mechanical or functional causes. Leads to cramping, vomiting, distension, dehydration. What is Gastric Cancer and who is at risk? Cancer of stomach mucosal glands, often in the antrum. Risks: H. pylori, smoked/preserved foods, chronic gastritis, family history. What is Pancreatitis and how does it present? Inflammation from autodigestion of the pancreas (often due to gallstones, alcohol, fatty meals). Severe epigastric pain radiating to back, nausea, vomiting, shock risk. What is Gastroesophageal Reflux Disease (GERD)? Chronic acid reflux from a weak LES. Causes heartburn, regurgitation, cough; may lead to strictures or Barrett’s esophagus. Chapter 18 – Urinary System Disorders What is the difference between Upper and Lower Urinary Tract Infections? Type of UTI Location Symptoms Cystitis Bladder Dysuria, urgency, frequency, cloudy urine Pyelonephritis Kidneys Flank pain, fever, chills, nausea, urinary symptoms What causes Glomerulonephritis and how does it present? Often follows streptococcal infection or autoimmune disease. Symptoms: hematuria, proteinuria, edema, hypertension, oliguria. What is Nephrotic Syndrome? Massive proteinuria, hypoalbuminemia, severe edema, hyperlipidemia. Caused by glomerular damage (diabetes, lupus, minimal change disease). What is Urolithiasis (Kidney Stones) and who is at risk? Solid mineral deposits in urinary tract from dehydration, high calcium/oxalate diet, gout, UTIs, family history. Stone Type Composition Risk Factors Calcium Calcium salts High calcium, hyperparathyroidism Struvite Magnesium ammonium phosphate Chronic UTIs Uric acid Uric acid Gout, high purine diet What is Hydronephrosis and what causes it? Dilation of renal pelvis/calyces from obstruction (stones, tumors, strictures, prostate enlargement). Can cause kidney damage. What is Polycystic Kidney Disease (PKD)? Genetic disorder with multiple kidney cysts. Leads to enlarged kidneys, hypertension, hematuria, kidney failure. What is Acute Kidney Injury (AKI) and what are its stages? Sudden kidney function decline.Stages: Oliguric → Diuretic → Recovery. What is Chronic Kidney Disease (CKD) and what are its complications? Gradual irreversible kidney damage. Complications: uremia, anemia, bone disease, cardiovascular issues. What is Bladder Cancer? Malignancy of bladder lining, linked to smoking, chemical exposure. Painless hematuria is common. What is Wilms Tumor (Nephroblastoma)? Childhood kidney cancer; large abdominal mass, hematuria, hypertension. What are the common diagnostic tests for Urinary Disorders? Urinalysis, urine culture, blood tests (BUN, creatinine), imaging (ultrasound, CT, MRI), cystoscopy. References Porth, C. M. (2015). Essentials of pathophysiology: Concepts of altered health states (4th ed.). Wolters Kluwer. Huether, S. E., & McCance, K. L. (2019). Understanding pathophysiology (7th ed.). Elsevier. NR 283 Final Exam McCance, K. L., & Huether, S. E. (2022). Pathophysiology: The biologic basis for disease in adults and children (8th ed.). Elsevier.

Student Name Chamberlain University NR-283: Pathophysiology Prof. Name Date NR 283 Exam 2 A nurse finds her patient up in the middle of the night gasping for air and needing to sit or stand to catch their breath. What does this patient have? A) Subjective DyspneaB) OrthopneaC) Paroxysmal Nocturnal DyspneaD) Dyspnea on exertion What is it called when a patient has a PaCO₂ greater than normal because they are not expiring enough? A) HypercapniaB) HyperventilationC) HypocapniaD) Clubbing What breathing pattern is related to strenuous exercise and presents as an increased respiratory rate with large tidal volumes? A) Labored breathingB) Cheyne-Stokes RespirationsC) Normal breathingD) Kussmaul Respirations Hypoxemia is a lack of oxygen in the tissues. True or False? False – Hypoxemia is a lack of oxygen in the blood; hypoxia refers to tissues. Which of the following can be a cause of hypoxemia? (select all that apply) A) Damage to the alveolocapillary membraneB) AtelectasisC) Pulmonary embolusD) Pneumonia The presence of an excess amount of air in the pleural space causing a “one-way valve” to develop would be known as what? A) Spontaneous PneumothoraxB) Flail chestC) Tension PneumothoraxD) Atelectasis An increased amount of pus, cellular debris, and microorganisms in the pleural space would be known as what? A) Pulmonary edemaB) Transudative pleural effusionC) PneumoniaD) Empyema A common cause of acute respiratory distress syndrome (ARDS) is: A) Cardiac DiseaseB) Renal DiseaseC) SepsisD) Compromised Chest Wall Why does ARDS lead to hypoxemia? Because the alveolocapillary membrane gets injured and blood, cells, and debris enter the alveoli, causing some alveoli to collapse. These filled or collapsed alveoli cannot participate in gas exchange, so oxygen cannot reach the blood. A nurse is educating colleagues on the pathology of emphysema. Which statement is accurate? A) Excessive mucus production obstructs the small airwaysB) Inhalation of an allergen causes bronchospasm and mucus productionC) Obstruction and air trapping results from tissue changes rather than mucus productionD) Caused by a community-acquired or nosocomial bacteria Emphysema can be caused by which of the following? (select all that apply) A) Cigarette smokeB) Air pollutantsC) Increased mucus glandsD) Deficiency of an enzyme A patient presents with fatigue, weight loss, anorexia, night sweats, and general anxiety. They have been homeless most of the last year. Which disease process is suspected? A) Chronic BronchitisB) AsthmaC) Pulmonary edemaD) Tuberculosis A pulmonary embolus commonly arises from what? A) Pulmonary veinB) Deep vein in the armC) Deep vein in the thighD) Pulmonary artery Which one best describes cor pulmonale? A) It is high pressures in the vessels of the lungB) It will cause the left side of the heart to work harder than normalC) It is known as pulmonary heart diseaseD) Early signs include productive cough and wheezing Oxygenated blood flows through the what? A) Superior Vena CavaB) Pulmonary VeinsC) Pulmonary ArteriesD) Coronary Veins What is the equation for CO? CO = HR × SV What is CO telling us?How well the heart is performing (cardiac performance). What affects cardiac output? Chronic venous insufficiency can progress to varicose veins. True or False? False – It’s the opposite. Which of the following would be part of Virchow’s Triad? (select all that apply) A) Immobility – causes venous stasisB) Use of birth control pills – causes hypercoagulabilityC) Damage to the valves in a vein – endothelial damage Which of the following will not increase as a result of primary hypertension? A) Peripheral resistanceB) Circulating VolumeC) Salt and water excretionD) Arterial vasoconstriction NR 283 Exam 2 Malignant hypertension is a chronic form of hypertension with organ damage. True or False? False – Malignant hypertension is the rapidly progressing form; complicated hypertension is chronic. Which is true regarding aneurysms? A) Most common cause is infectionB) A patient will always have symptoms with an aneurysmC) A saccular aneurysm produces outpouching on both sides of the vessel wallD) False aneurysms can occur related to hematoma formation Decreasing a patient’s cholesterol can cause regression of atherosclerotic lesions and improve vessel function. True or False? True What is the progression of cell and plaque formation seen in atherosclerosis? Coronary artery disease can diminish myocardial blood supply enough to cause: A) InfarctionB) IschemiaC) Acute coronary syndromeD) Inflammation _____ angina occurs because of vasospasms of one or more coronary arteries. A) UnstableB) StableC) SilentD) Prinzmetal Which of these is a sign of impending cardiac death? A) Prinzmetal anginaB) Silent ischemiaC) Unstable AnginaD) Stable Angina Constrictive Pericarditis results in what? A) Damage to the myocardiumB) Inflammation of the pericardiumC) Calcification of the pericardiumD) Thinning of pericardial sac What are we most concerned about with a patient who has a pericardial effusion? A) Increased blood pressureB) Development of an aneurysmC) Development of tamponadeD) Infection Which cardiomyopathy results in increased ventricular size? A) Hypertrophic cardiomyopathyB) Restrictive cardiomyopathyC) Dilated cardiomyopathyD) Obstructive cardiomyopathy Which disease will result in left atrial hypertrophy? A) Aortic stenosisB) Tricuspid RegurgitationC) Mitral StenosisD) Aortic regurgitation Which of the following results in blood returning to the left ventricle? A) Mitral valve prolapseB) Aortic valve stenosisC) Mitral Valve regurgitationD) Aortic valve regurgitation Which of the following produces valve vegetations that can lead to emboli formation? A) EndocarditisB) PericarditisC) MyocarditisD) Rheumatic Fever With heart failure, left ventricular preload is: A) DecreasedB) IncreasedC) Stays the sameD) Increased, then decreased NR 283 Exam 2 Left-sided heart failure will result in what kind of manifestations? Why? Manifestations in the lungs – dyspnea, DOE, orthopnea, cough with frothy sputum, pulmonary edema, crackles.Reason – The left ventricle fails, fluid backs up into the left atrium, pulmonary veins, and eventually the lungs.

Student Name Chamberlain University NR-283: Pathophysiology Prof. Name Date NR283 Pathophysiology Study Guide for Exam 1 Chapter 1: Introduction to Pathology 1. Describe the cellular adaptations made in each of the following processes and their causative factors: atrophy, hypertrophy, hyperplasia, dysplasia, and metaplasia Cellular adaptation refers to the ability of cells to adjust in response to environmental changes, stress, or injury. These adaptations can be beneficial or may signal the onset of disease if the stimulus is persistent or severe. Table 1 below summarizes each type of cellular adaptation and its primary causes. Adaptation Type Description Common Causes Clinical Examples Atrophy Reduction in the size of cells, leading to decreased tissue mass. Decreased functional demand, poor nutrition, loss of hormonal/neural stimulation, aging. Muscle wasting in limb immobilization; brain atrophy in dementia. Hypertrophy Enlargement of individual cells, increasing tissue mass. Increased functional demand, hormonal stimulation. Myocardial hypertrophy from hypertension. Hyperplasia Increase in the number of cells, leading to tissue enlargement. Hormonal stimulation, compensation after tissue loss, chronic irritation. Endometrial hyperplasia; liver regeneration after partial hepatectomy. Dysplasia Abnormal variation in cell size, shape, and organization; often increased mitotic rate. Chronic irritation, inflammation, precancerous changes. Cervical dysplasia detected by Pap smear. Metaplasia Replacement of one mature cell type by another mature type better suited to stress. Chronic irritation, vitamin A deficiency. Replacement of ciliated columnar epithelium by stratified squamous epithelium in smokers. These changes are often reversible if the causative factor is removed. However, dysplasia is considered premalignant and warrants close monitoring. 3. Identify the most common cause of cellular injury The leading cause of cellular injury is ischemia—an inadequate supply of oxygenated blood to tissues due to obstructed blood flow. This results in hypoxia, impairing ATP production and cellular metabolism. Other causes of cellular injury include: Ischemic injury can lead to rapid cell death if not reversed, particularly in high-metabolic-demand tissues such as the brain and heart. 4. Describe cellular injury caused by infection and inflammation Infectious agents such as bacteria, viruses, and fungi can directly damage cells or trigger immune-mediated injury. Some pathogens activate pyroptosis, a programmed cell death pathway characterized by plasma membrane rupture and release of inflammatory mediators. Inflammation accompanying infection results in: Prolonged or excessive inflammation can impair tissue function and promote chronic disease. 5. Describe the major mechanism of tissue damage caused by chemical injury Chemical injury occurs when exogenous agents (from outside the body) or endogenous compounds (produced internally) disrupt cell function. Mechanisms include: Examples: 6. Discuss the manifestations of the four major types of necrosis, and give examples of the tissue types affected by each type of necrosis Necrosis is uncontrolled cell death due to injury, leading to inflammation and tissue destruction. Type of Necrosis Pathologic Process Common Sites Example Conditions Liquefaction Dead cells are digested by enzymes, forming a liquid mass. Brain, abscess cavities. Stroke, bacterial brain abscess. Coagulative Cell proteins denature; cell outlines remain temporarily intact. Heart, kidney, adrenal glands. Myocardial infarction. Fat Lipases break down fat into fatty acids, which bind calcium (saponification). Breast, pancreas. Acute pancreatitis. Caseous Combination of coagulative and liquefactive necrosis, producing a soft, cheese-like material. Lungs, lymph nodes. Tuberculosis with Ghon complex formation. 7. Discuss apoptosis Apoptosis is a programmed cell death process essential for normal tissue development, immune regulation, and removal of damaged cells. Unlike necrosis, it does not cause inflammation. Key features: NR 283 Exam 1 Triggers include: Chapter 02: Fluids and Electrolytes, Acids and Bases 1. Discuss the two functional fluid compartments of the body The body’s total water content is distributed into two main compartments: 2. Discuss the ways water moves between plasma and interstitial fluid Water moves between the vascular compartment (plasma) and the interstitial compartment through capillary membranes, driven by: Process: 3. Describe the causation, pathophysiologic process, and clinical manifestations of edema Edema is an abnormal accumulation of fluid in the interstitial compartment. It may be localized or generalized. Causes include: Clinical manifestations: Table 2: Summary of Edema Causes and Effects NR 283 Exam 1 Cause Mechanism Example Condition ↑ Hydrostatic pressure Forces fluid out of capillaries CHF, pregnancy ↓ Plasma proteins Less osmotic pull back into capillaries Liver failure, malnutrition Lymphatic obstruction Accumulated proteins & fluid Tumor blocking lymph nodes ↑ Capillary permeability Protein leakage → fluid retention in interstitial space Burns, allergic reaction 4. Discuss the regulatory processes for sodium and water balance in the body, including the role of antidiuretic hormone, renin-angiotensin-aldosterone Antidiuretic Hormone (ADH) Aldosterone Renin-Angiotensin-Aldosterone System (RAAS) 5. Identify the basic causes and clinical manifestations of hypernatremia, hyponatremia, hyperkalemia, hypokalemia, hypocalcemia, and hypercalcemia Table 3: Electrolyte Imbalances Condition Common Causes Key Signs/Symptoms Hypernatremia Excess Na⁺ intake, water loss, diabetes insipidus Thirst, dry mucosa, weakness, agitation, edema, ↑ BP Hyponatremia Excess fluid intake, diuretics, adrenal insufficiency Nausea, cramps, confusion, seizures, ↓ BP Hyperkalemia Renal failure, tissue injury, K⁺-sparing diuretics Arrhythmias, muscle weakness, paresthesia Hypokalemia Diuretics, vomiting, diarrhea, poor intake Arrhythmias, constipation, muscle cramps Hypercalcemia Bone destruction, hyperparathyroidism, immobility Lethargy, constipation, kidney stones, arrhythmias Hypocalcemia Hypoparathyroidism, vit. D deficiency, alkalosis Tetany, muscle spasms, arrhythmias 6. Discuss the causes, clinical manifestations, complications of water deficit (hypovolemia) Causes: Severe diarrhea, vomiting, hemorrhage, burns, excessive sweating, poor intake. Pathophysiology: Fluid loss reduces circulating blood volume → decreased tissue perfusion → cellular hypoxia. Symptoms: Complications: Shock, organ failure. 7. Discuss the causes, clinical manifestations, complications of water excess (hypervolemia) Causes: Kidney failure, excessive IV fluids, heart failure, excessive sodium intake. Symptoms: 8. Explain the buffer systems that regulate acid-base balance in the body The body’s pH is tightly maintained between 7.35 and 7.45 to ensure proper enzyme function and metabolic activity. This balance is regulated by buffer systems, respiratory control, and renal function. Major buffer systems: Buffer System Components Primary Action Speed Bicarbonate-Carbonic Acid H₂CO₃ (carbonic acid) / NaHCO₃ (bicarbonate) Neutralizes acids or bases; works with respiratory and renal systems Seconds to minutes Phosphate Buffer NaH₂PO₄ / Na₂HPO₄ Important in intracellular and renal tubular fluids Minutes Protein Buffers Hemoglobin, plasma proteins Bind or release hydrogen ions Immediate Hemoglobin Buffer Oxyhemoglobin and deoxyhemoglobin Buffers acids in