Cardiology MCQs
1. What is the primary function of the left ventricle?
A) Pump deoxygenated blood to the lungs
B) Receive oxygenated blood from the lungs
C) Pump oxygenated blood to the systemic circulation
D) Receive deoxygenated blood from the systemic circulation
Answer: C) Pump oxygenated blood to the systemic circulation
2. Which of the following conditions is characterized by a narrowing of the aortic valve?
A) Aortic regurgitation
B) Aortic stenosis
C) Mitral stenosis
D) Mitral regurgitation
Answer: B) Aortic stenosis
3. What is the most common cause of coronary artery disease (CAD)?
A) Viral infection
B) Hypertension
C) High cholesterol
D) Diabetes mellitus
Answer: C) High cholesterol
4. In which phase of the cardiac cycle does the heart muscle relax and fill with blood?
A) Systole
B) Diastole
C) Isovolumetric contraction
D) Isovolumetric relaxation
Answer: B) Diastole
5. What is the primary treatment goal for a patient with congestive heart failure (CHF)?
A) Increase heart rate
B) Decrease blood pressure
C) Reduce fluid overload
D) Increase cardiac output
Answer: C) Reduce fluid overload
6. Which type of arrhythmia is characterized by an abnormally fast heart rate originating from the atria?
A) Ventricular tachycardia
B) Atrial fibrillation
C) Sinus bradycardia
D) Atrial flutter
Answer: D) Atrial flutter
7. What medication class is commonly used to lower blood pressure and reduce heart failure symptoms?
A) Diuretics
B) Beta-blockers
C) Calcium channel blockers
D) ACE inhibitors
Answer: D) ACE inhibitors
8. Which diagnostic test is most commonly used to evaluate the electrical activity of the heart?
A) Echocardiogram
B) MRI
C) Electrocardiogram (ECG)
D) Chest X-ray
Answer: C) Electrocardiogram (ECG)
9. What is the term for the condition where the heart’s ability to pump blood is weakened, leading to a reduced ejection fraction?
A) Heart attack
B) Cardiomyopathy
C) Myocarditis
D) Endocarditis
Answer: B) Cardiomyopathy
10. Which of the following is a common symptom of angina pectoris?
A) Shortness of breath
B) Chest pain or discomfort
C) Dizziness
D) Palpitations
Answer: B) Chest pain or discomfort