1. Which of the following is the most common cause of congestive
heart failure (CHF)?
• A) Hypertension
• B) Aortic stenosis
• C) Coronary artery disease (CAD)
• D) Pulmonary embolism
Answer: C) Coronary artery disease (CAD)
Rationale: Coronary artery disease (CAD) is the most common cause of
congestive heart failure. CAD leads to myocardial ischemia and
infarction, weakening the heart muscle, which can impair the heart's
ability to pump blood efficiently.
2. Which of the following is the primary mechanism responsible for
the development of edema in patients with heart failure?
• A) Increased capillary permeability
• B) Increased hydrostatic pressure
• C) Decreased plasma protein concentration
• D) Increased lymphatic drainage
Answer: B) Increased hydrostatic pressure
Rationale: In heart failure, the heart is unable to pump blood
effectively, leading to increased venous pressure. This results in an
elevation in hydrostatic pressure within capillaries, forcing fluid out into
the interstitial space, causing edema.
,3. Which of the following is the hallmark feature of nephrotic
syndrome?
• A) Proteinuria
• B) Hematuria
• C) Hyperkalemia
• D) Hypertension
Answer: A) Proteinuria
Rationale: Nephrotic syndrome is characterized by a significant loss of
protein in the urine (proteinuria), usually greater than 3.5 grams per
day. This leads to hypoalbuminemia and edema due to the loss of
albumin, the main plasma protein.
4. Which of the following is the primary cause of Type 1 diabetes
mellitus?
• A) Insulin resistance
• B) Autoimmune destruction of pancreatic beta cells
• C) Obesity
• D) Genetic mutations in insulin receptor genes
Answer: B) Autoimmune destruction of pancreatic beta cells
Rationale: Type 1 diabetes mellitus is primarily caused by an
autoimmune response that destroys the insulin-producing beta cells of
the pancreas, leading to an absolute insulin deficiency.
, 5. Which of the following electrolyte imbalances is most commonly
associated with acute renal failure?
• A) Hypercalcemia
• B) Hypernatremia
• C) Hyperkalemia
• D) Hypomagnesemia
Answer: C) Hyperkalemia
Rationale: Acute renal failure often leads to the accumulation of
potassium due to impaired renal excretion. Hyperkalemia is a common
and dangerous complication because it can lead to fatal arrhythmias.
6. In a patient with chronic obstructive pulmonary disease (COPD),
what is the primary cause of respiratory acidosis?
• A) Increased CO2 production
• B) Decreased ventilation
• C) Increased renal excretion of bicarbonate
• D) Excessive oxygen administration
Answer: B) Decreased ventilation
Rationale: In COPD, there is a progressive impairment of airflow and
reduced ability to expel CO2 from the lungs. This leads to CO2
retention, which results in respiratory acidosis.
7. Which of the following is a typical manifestation of
hyperthyroidism?
heart failure (CHF)?
• A) Hypertension
• B) Aortic stenosis
• C) Coronary artery disease (CAD)
• D) Pulmonary embolism
Answer: C) Coronary artery disease (CAD)
Rationale: Coronary artery disease (CAD) is the most common cause of
congestive heart failure. CAD leads to myocardial ischemia and
infarction, weakening the heart muscle, which can impair the heart's
ability to pump blood efficiently.
2. Which of the following is the primary mechanism responsible for
the development of edema in patients with heart failure?
• A) Increased capillary permeability
• B) Increased hydrostatic pressure
• C) Decreased plasma protein concentration
• D) Increased lymphatic drainage
Answer: B) Increased hydrostatic pressure
Rationale: In heart failure, the heart is unable to pump blood
effectively, leading to increased venous pressure. This results in an
elevation in hydrostatic pressure within capillaries, forcing fluid out into
the interstitial space, causing edema.
,3. Which of the following is the hallmark feature of nephrotic
syndrome?
• A) Proteinuria
• B) Hematuria
• C) Hyperkalemia
• D) Hypertension
Answer: A) Proteinuria
Rationale: Nephrotic syndrome is characterized by a significant loss of
protein in the urine (proteinuria), usually greater than 3.5 grams per
day. This leads to hypoalbuminemia and edema due to the loss of
albumin, the main plasma protein.
4. Which of the following is the primary cause of Type 1 diabetes
mellitus?
• A) Insulin resistance
• B) Autoimmune destruction of pancreatic beta cells
• C) Obesity
• D) Genetic mutations in insulin receptor genes
Answer: B) Autoimmune destruction of pancreatic beta cells
Rationale: Type 1 diabetes mellitus is primarily caused by an
autoimmune response that destroys the insulin-producing beta cells of
the pancreas, leading to an absolute insulin deficiency.
, 5. Which of the following electrolyte imbalances is most commonly
associated with acute renal failure?
• A) Hypercalcemia
• B) Hypernatremia
• C) Hyperkalemia
• D) Hypomagnesemia
Answer: C) Hyperkalemia
Rationale: Acute renal failure often leads to the accumulation of
potassium due to impaired renal excretion. Hyperkalemia is a common
and dangerous complication because it can lead to fatal arrhythmias.
6. In a patient with chronic obstructive pulmonary disease (COPD),
what is the primary cause of respiratory acidosis?
• A) Increased CO2 production
• B) Decreased ventilation
• C) Increased renal excretion of bicarbonate
• D) Excessive oxygen administration
Answer: B) Decreased ventilation
Rationale: In COPD, there is a progressive impairment of airflow and
reduced ability to expel CO2 from the lungs. This leads to CO2
retention, which results in respiratory acidosis.
7. Which of the following is a typical manifestation of
hyperthyroidism?
