The section, EDAIC MCQ with an explanation, covers a different topic each day with the intent that candidates can prepare one small topic each day, making steady progress in their exam preparation.
Question:
Observe the above ECG strip carefully and identify the correct statements:
- This picture could be seen in patients with Lyme disease
- This picture could be caused by a serum potassium value of 3.4 mmol/L
- The person should be referred for insertion of a permanent pacemaker
- This picture could be a normal finding in trained athletes
- This picture could be seen in patients after mitral valve surgery
Answers:
- true
- false
- false
- true
- true
Explanation:
A PR interval of more than 0.2 seconds is called a first-degree heart block. This is usually a benign condition and doesn’t need any active intervention.Â
Causes:
- Increased vagal tone
- Athletic training
- Inferior MI
- Mitral valve surgery
- Myocarditis (e.g. Lyme disease)
- Infiltrative cardiac diseases (sarcoidosis)
- Structural heart disease (e.g., dilated cardiomyopathy, hypertrophic cardiomyopathy).
- Electrolyte disturbances
- Hypokalemia: ECG changes are usually seen when potassium value falls below 3 mmol/l
- Hyperkalemia
- AV nodal blocking drugs (beta-blockers, calcium channel blockers, digoxin, amiodarone)
- Fibrosis of the conduction system (common cause in the elderly population)
- May be a normal variant
Mock-tests for EDAIC multiple choice questions (part-1) are now available for your practice and making you familiar with the exam pattern, and complexity. The practice will come in handy when the final exam FINALLY arrives. The tests have been launched keeping in mind the much needed last-minute practice and revision required for September 2021 exam.
You can take the test and gauge your preparation level. Detailed explanations are also available for desiring candidates. The exam result will be emailed to you with or without explanations as per your result.
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‘EDAIC MCQ with an explanation’ covers a different topic each day with the intent that candidates can prepare one small topic each day, making steady progress in their exam preparation.
