[2] Cardiology MCQ Quiz

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21. What is the function of the chordae tendineae in the heart?

To prevent backflow of blood

To control heart rate

To carry electrical impulses

To supply blood to the heart muscle

22. Which of the following conditions is characterized by inflammation of the pericardium?

Cardiomyopathy

Pericarditis

Myocarditis

Endocarditis

23. Which test is used to measure the electrical activity of the heart?

Electrocardiogram (ECG)

Echocardiogram

Stress test

Cardiac catheterization

24. Which of the following is an ACE inhibitor used to treat hypertension?

Metoprolol

Amlodipine

Lisinopril

Losartan

25. Which heart sound is produced by the closure of the aortic and pulmonic valves?

S2

S4

S3

S1

26. Which heart rhythm disorder requires anticoagulant therapy to prevent stroke?

Ventricular fibrillation

Atrial fibrillation

Ventricular tachycardia

Sinus bradycardia

27. Which of the following conditions is characterized by an abnormal buildup of fluid in the lungs due to heart failure?

Pneumonia

Pulmonary embolism

Asthma

Pulmonary edema

28. Which cardiac enzyme is most specific for diagnosing a myocardial infarction?

Aspartate transaminase (AST)

Troponin

Lactate dehydrogenase (LDH)

Amylase

29. Which structure is known as the 'heart's natural pacemaker'?

Purkinje fibers

AV node

SA node

Bundle of His

30. Which blood pressure reading is considered stage 1 hypertension?

150/95 mmHg

130/85 mmHg

120/80 mmHg

140/90 mmHg

31. Which of the following is a common side effect of diuretics used in heart failure management?

Hypokalemia

Hypertension

Bradycardia

Hyperkalemia

32. Which term describes the ability of cardiac muscle cells to generate an electrical impulse without external stimulation?

Contractility

Automaticity

Conductivity

Excitability

33. Which heart valve prevents the backflow of blood into the right ventricle?

Mitral valve

Tricuspid valve

Aortic valve

Pulmonic valve

34. Which medication class is commonly prescribed for rate control in atrial fibrillation?

Diuretics

Beta-blockers

Nitrates

ACE inhibitors

35. Which coronary artery primarily supplies blood to the right atrium and right ventricle?

Right coronary artery

Pulmonary artery

Left anterior descending artery

Circumflex artery

36. Which of the following is a complication of untreated hypertension?

Hyperlipidemia

Hypotension

Hypoglycemia

Stroke

37. Which test evaluates the structure and function of the heart using ultrasound waves?

Stress test

Echocardiogram

Electrocardiogram (ECG)

Cardiac MRI

38. Which heart valve has only two cusps?

Tricuspid valve

Mitral valve

Aortic valve

Pulmonic valve

39. What is the most common cause of myocardial infarction?

Arrhythmia

Atherosclerosis

Myocarditis

Cardiomyopathy

40. Which medication is commonly used as an anticoagulant in patients with atrial fibrillation?

Warfarin

Lisinopril

Aspirin

Metformin

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