Dr. Usman's Cardiology Notes

 Here are multiple choice questions (MCQs) in cardiology with detailed answers: 1. Which of the following is the most common cause of acute myocarditis?    A) Coxsackievirus B) Streptococcus pneumoniae C) Staphylococcus aureus D) Mycobacterium tuberculosis    Answer: A) Coxsackievirus    Explanation: Coxsackievirus is the most common viral cause of acute myocarditis, leading to inflammation of the heart muscle. 2. What is the characteristic ECG finding in patients with Brugada syndrome?    A) Prolonged QT interval B) ST-segment elevation in leads V1-V3 C) Tall peaked T waves D) Presence of Osborn waves    Answer: B) ST-segment elevation in leads V1-V3    Explanation: Brugada syndrome is characterized by ST-segment elevation in leads V1-V3, often resembling a coved-type pattern. 3. Which of the following is NOT a major criterion for the diagnosis of infective endocarditis according to the modified Duke criteria?  ...