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Cardiology SBA Questions

1. A 65-year-old man presents with chest pain on exertion that is relieved by rest. What is the most likely diagnosis?

  • A. Myocardial infarction
  • B. Stable angina
  • C. Aortic dissection
  • D. Pericarditis
  • E. Pulmonary embolism

Answer: B. Stable angina

Explanation: Chest pain on exertion that is relieved by rest is characteristic of stable angina.

2. A 70-year-old woman presents with sudden onset of shortness of breath, palpitations, and dizziness. Her ECG shows an irregularly irregular rhythm with no distinct P waves. What is the most likely diagnosis?

  • A. Atrial flutter
  • B. Ventricular tachycardia
  • C. Atrial fibrillation
  • D. Supraventricular tachycardia
  • E. Sinus arrhythmia

Answer: C. Atrial fibrillation

Explanation: An irregularly irregular rhythm with no distinct P waves on ECG is indicative of atrial fibrillation.

3. A 58-year-old woman presents with chest pain at rest that radiates to her jaw. Her ECG shows ST-segment depression and T-wave inversion. What is the most likely diagnosis?

  • A. Stable angina
  • B. Unstable angina
  • C. Acute myocardial infarction
  • D. Pericarditis
  • E. Pulmonary embolism

Answer: B. Unstable angina

Explanation: Chest pain at rest with ECG changes such as ST-segment depression and T-wave inversion is indicative of unstable angina.

4. A 45-year-old man presents with a tearing chest pain radiating to the back. His blood pressure is 180/110 mmHg, and there is a difference in blood pressure between his arms. What is the most likely diagnosis?

  • A. Myocardial infarction
  • B. Aortic dissection
  • C. Pulmonary embolism
  • D. Pericarditis
  • E. Tension pneumothorax

Answer: B. Aortic dissection

Explanation: A tearing chest pain radiating to the back with a difference in blood pressure between arms is characteristic of an aortic dissection.

5. A 55-year-old woman presents with fatigue and exertional dyspnoea. On examination, a crescendo-decrescendo systolic murmur is heard at the right second intercostal space. What is the most likely diagnosis?

  • A. Mitral regurgitation
  • B. Aortic stenosis
  • C. Tricuspid regurgitation
  • D. Pulmonary stenosis
  • E. Mitral stenosis

Answer: B. Aortic stenosis

Explanation: A crescendo-decrescendo systolic murmur at the right second intercostal space is indicative of aortic stenosis.

6. A 60-year-old man with a history of hypertension presents with sudden onset of severe headache and visual disturbances. His blood pressure is 210/120 mmHg. What is the most likely diagnosis?

  • A. Hypertensive emergency
  • B. Migraine
  • C. Cluster headache
  • D. Chronic kidney disease
  • E. Pheochromocytoma

Answer: A. Hypertensive emergency

Explanation: Severe hypertension with end-organ damage such as headache and visual disturbances is indicative of a hypertensive emergency.

7. A 50-year-old man presents with palpitations and dizziness. His ECG shows a regular narrow complex tachycardia with a rate of 160 beats per minute. What is the most likely diagnosis?

  • A. Atrial fibrillation
  • B. Ventricular tachycardia
  • C. Supraventricular tachycardia
  • D. Sinus tachycardia
  • E. Atrial flutter

Answer: C. Supraventricular tachycardia

Explanation: A regular narrow complex tachycardia with a rapid heart rate is indicative of supraventricular tachycardia.

8. A 75-year-old man presents with shortness of breath, leg swelling, and distended neck veins. On examination, he has a displaced apex beat and a third heart sound. What is the most likely diagnosis?

  • A. Aortic stenosis
  • B. Pulmonary embolism
  • C. Congestive heart failure
  • D. Chronic obstructive pulmonary disease
  • E. Pericarditis

Answer: C. Congestive heart failure

Explanation: Shortness of breath, leg swelling, distended neck veins, a displaced apex beat, and a third heart sound are characteristic of congestive heart failure.

9. A 65-year-old woman presents with episodic chest pain, palpitations, and a "fluttering" feeling in her chest. Her ECG shows sawtooth-like flutter waves. What is the most likely diagnosis?

  • A. Atrial fibrillation
  • B. Atrial flutter
  • C. Ventricular tachycardia
  • D. Supraventricular tachycardia
  • E. Sinus arrhythmia

Answer: B. Atrial flutter

Explanation: Sawtooth-like flutter waves on ECG are indicative of atrial flutter.

10. A 55-year-old man presents with severe crushing chest pain radiating to his left arm. His ECG shows ST elevation in leads II, III, and aVF. What is the most likely diagnosis?

  • A. Anterior myocardial infarction
  • B. Lateral myocardial infarction
  • C. Inferior myocardial infarction
  • D. Posterior myocardial infarction
  • E. Non-ST elevation myocardial infarction

Answer: C. Inferior myocardial infarction

Explanation: ST elevation in leads II, III, and aVF is indicative of an inferior myocardial infarction.

11. A 40-year-old woman presents with palpitations, sweating, and weight loss. On examination, she has a fine tremor and a regular rapid pulse. What is the most likely diagnosis?

  • A. Hyperthyroidism
  • B. Pheochromocytoma
  • C. Anxiety disorder
  • D. Atrial fibrillation
  • E. Panic attack

Answer: A. Hyperthyroidism

Explanation: Palpitations, sweating, weight loss, fine tremor, and a regular rapid pulse are characteristic of hyperthyroidism.

12. A 75-year-old woman presents with fatigue, shortness of breath, and bilateral leg swelling. On examination, she has a raised jugular venous pressure and a third heart sound. What is the most likely diagnosis?

  • A. Chronic obstructive pulmonary disease
  • B. Congestive heart failure
  • C. Pulmonary embolism
  • D. Chronic kidney disease
  • E. Hepatic cirrhosis

Answer: B. Congestive heart failure

Explanation: Fatigue, shortness of breath, bilateral leg swelling, raised jugular venous pressure, and a third heart sound are indicative of congestive heart failure.

13. A 60-year-old man presents with central crushing chest pain radiating to his jaw and left arm. His ECG shows ST elevation in leads V1-V4. What is the most likely diagnosis?

  • A. Anterior myocardial infarction
  • B. Lateral myocardial infarction
  • C. Inferior myocardial infarction
  • D. Posterior myocardial infarction
  • E. Non-ST elevation myocardial infarction

Answer: A. Anterior myocardial infarction

Explanation: ST elevation in leads V1-V4 is indicative of an anterior myocardial infarction.

14. A 50-year-old woman presents with sudden onset of severe tearing chest pain radiating to her back. She has a history of hypertension. What is the most likely diagnosis?

  • A. Myocardial infarction
  • B. Aortic dissection
  • C. Pulmonary embolism
  • D. Pericarditis
  • E. Gastroesophageal reflux disease

Answer: B. Aortic dissection

Explanation: Severe tearing chest pain radiating to the back in a patient with hypertension is characteristic of an aortic dissection.

15. A 45-year-old man presents with exertional dyspnoea and a heart murmur. On examination, he has a mid-systolic click followed by a late systolic murmur. What is the most likely diagnosis?

  • A. Mitral valve prolapse
  • B. Aortic stenosis
  • C. Mitral regurgitation
  • D. Tricuspid regurgitation
  • E. Pulmonary stenosis

Answer: A. Mitral valve prolapse

Explanation: A mid-systolic click followed by a late systolic murmur is characteristic of mitral valve prolapse.

16. A 70-year-old man presents with sudden onset of shortness of breath and pleuritic chest pain. His D-dimer is elevated, and his ECG shows right heart strain. What is the most likely diagnosis?

  • A. Myocardial infarction
  • B. Pulmonary embolism
  • C. Pneumonia
  • D. Pericarditis
  • E. Pneumothorax

Answer: B. Pulmonary embolism

Explanation: Sudden onset of shortness of breath, pleuritic chest pain, elevated D-dimer, and ECG showing right heart strain are indicative of a pulmonary embolism.

17. A 55-year-old woman presents with palpitations, shortness of breath, and dizziness. Her ECG shows a regular rhythm with a rate of 150 beats per minute and a sawtooth pattern. What is the most likely diagnosis?

  • A. Atrial fibrillation
  • B. Atrial flutter
  • C. Ventricular tachycardia
  • D. Supraventricular tachycardia
  • E. Sinus tachycardia

Answer: B. Atrial flutter

Explanation: A regular rhythm with a rate of 150 beats per minute and a sawtooth pattern on ECG is indicative of atrial flutter.

18. A 65-year-old man presents with fatigue, palpitations, and shortness of breath. On examination, he has an irregularly irregular pulse and a displaced apex beat. What is the most likely diagnosis?

  • A. Atrial fibrillation
  • B. Atrial flutter
  • C. Ventricular tachycardia
  • D. Supraventricular tachycardia
  • E. Sinus arrhythmia

Answer: A. Atrial fibrillation

Explanation: Fatigue, palpitations, shortness of breath, an irregularly irregular pulse, and a displaced apex beat are indicative of atrial fibrillation.

19. A 50-year-old man presents with sudden onset of severe headache, visual disturbances, and weakness. His blood pressure is 220/130 mmHg. What is the most likely diagnosis?

  • A. Hypertensive urgency
  • B. Hypertensive emergency
  • C. Migraine
  • D. Pheochromocytoma
  • E. Acute ischemic stroke

Answer: B. Hypertensive emergency

Explanation: Severe hypertension with end-organ damage such as headache, visual disturbances, and weakness is indicative of a hypertensive emergency.

20. A 60-year-old woman presents with chest pain and shortness of breath. Her ECG shows ST elevation in leads I, aVL, V5, and V6. What is the most likely diagnosis?

  • A. Anterior myocardial infarction
  • B. Lateral myocardial infarction
  • C. Inferior myocardial infarction
  • D. Posterior myocardial infarction
  • E. Non-ST elevation myocardial infarction

Answer: B. Lateral myocardial infarction

Explanation: ST elevation in leads I, aVL, V5, and V6 is indicative of a lateral myocardial infarction.

21. A 72-year-old man presents with fatigue, dizziness, and syncope. His ECG shows a prolonged PR interval and dropped beats. What is the most likely diagnosis?

  • A. First-degree heart block
  • B. Second-degree heart block (Mobitz I)
  • C. Second-degree heart block (Mobitz II)
  • D. Third-degree heart block
  • E. Bundle branch block

Answer: C. Second-degree heart block (Mobitz II)

Explanation: A prolonged PR interval with dropped beats is characteristic of second-degree heart block (Mobitz II).

22. A 55-year-old woman presents with fatigue, weight gain, and cold intolerance. On examination, she has bradycardia and a slow-relaxing reflex. What is the most likely diagnosis?

  • A. Hypothyroidism
  • B. Hyperthyroidism
  • C. Addison's disease
  • D. Cushing's syndrome
  • E. Pheochromocytoma

Answer: A. Hypothyroidism

Explanation: Fatigue, weight gain, cold intolerance, bradycardia, and slow-relaxing reflex are characteristic of hypothyroidism.

23. A 60-year-old man presents with sudden onset of severe chest pain and collapse. On examination, he has a widened mediastinum on chest X-ray. What is the most likely diagnosis?

  • A. Myocardial infarction
  • B. Pulmonary embolism
  • C. Aortic dissection
  • D. Pneumothorax
  • E. Pericarditis

Answer: C. Aortic dissection

Explanation: Severe chest pain, collapse, and a widened mediastinum on chest X-ray are indicative of an aortic dissection.

24. A 75-year-old woman presents with progressive dyspnoea and fatigue. On examination, she has a loud first heart sound and a diastolic rumble at the apex. What is the most likely diagnosis?

  • A. Aortic stenosis
  • B. Mitral stenosis
  • C. Mitral regurgitation
  • D. Tricuspid stenosis
  • E. Pulmonary stenosis

Answer: B. Mitral stenosis

Explanation: A loud first heart sound and a diastolic rumble at the apex are characteristic of mitral stenosis.

25. A 65-year-old man presents with exertional chest pain and syncope. On examination, he has a harsh systolic murmur at the right second intercostal space that radiates to the carotids. What is the most likely diagnosis?

  • A. Aortic stenosis
  • B. Mitral regurgitation
  • C. Tricuspid regurgitation
  • D. Pulmonary stenosis
  • E. Hypertrophic cardiomyopathy

Answer: A. Aortic stenosis

Explanation: Exertional chest pain, syncope, and a harsh systolic murmur at the right second intercostal space that radiates to the carotids are characteristic of aortic stenosis.

26. A 45-year-old woman presents with palpitations, sweating, and a feeling of impending doom. Her ECG shows a regular narrow complex tachycardia. What is the most likely diagnosis?

  • A. Atrial fibrillation
  • B. Ventricular tachycardia
  • C. Supraventricular tachycardia
  • D. Sinus tachycardia
  • E. Atrial flutter

Answer: C. Supraventricular tachycardia

Explanation: Palpitations, sweating, a feeling of impending doom, and a regular narrow complex tachycardia on ECG are indicative of supraventricular tachycardia.

27. A 60-year-old man presents with sudden onset of severe back pain and hypotension. On examination, he has a pulsatile abdominal mass. What is the most likely diagnosis?

  • A. Myocardial infarction
  • B. Pulmonary embolism
  • C. Aortic aneurysm rupture
  • D. Renal colic
  • E. Pancreatitis

Answer: C. Aortic aneurysm rupture

Explanation: Severe back pain, hypotension, and a pulsatile abdominal mass are indicative of an aortic aneurysm rupture.

28. A 70-year-old woman presents with progressive exertional dyspnoea and orthopnoea. On examination, she has a displaced apex beat and a third heart sound. What is the most likely diagnosis?

  • A. Chronic obstructive pulmonary disease
  • B. Congestive heart failure
  • C. Pulmonary embolism
  • D. Chronic kidney disease
  • E. Hepatic cirrhosis

Answer: B. Congestive heart failure

Explanation: Progressive exertional dyspnoea, orthopnoea, a displaced apex beat, and a third heart sound are indicative of congestive heart failure.

29. A 50-year-old man presents with palpitations, dizziness, and syncope. His ECG shows a prolonged QT interval. What is the most likely diagnosis?

  • A. Atrial fibrillation
  • B. Ventricular tachycardia
  • C. Long QT syndrome
  • D. Supraventricular tachycardia
  • E. Sinus bradycardia

Answer: C. Long QT syndrome

Explanation: Palpitations, dizziness, syncope, and a prolonged QT interval on ECG are indicative of long QT syndrome.

30. A 55-year-old woman presents with fatigue, weight gain, and cold intolerance. On examination, she has bradycardia and a slow-relaxing reflex. What is the most likely diagnosis?

  • A. Hypothyroidism
  • B. Hyperthyroidism
  • C. Addison's disease
  • D. Cushing's syndrome
  • E. Pheochromocytoma

Answer: A. Hypothyroidism

Explanation: Fatigue, weight gain, cold intolerance, bradycardia, and slow-relaxing reflex are characteristic of hypothyroidism.

Total Score: 0/30

 
 

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