Case Studies

#6 Case Studies: Give your diagnosis

A 68-year-old man presents to the emergency room complaining of multiple episodes of fainting since he woke up today. His fainting mainly occurs when he stands up.

He has a history of coronary artery disease, diabetes, high cholesterol and hypertension. He takes atenolol, metformin, lovastatin and lisinopril.

On physical examination, his blood pressure is 120/75, pulse is 55/min. and irregular, heart sounds are normal and lungs are clear on auscultation. ECG shows dropped beat after progressive lengthening of the PR interval.Case Studies


What is the most likely initial diagnosis?

A- Atrial flutter

B-Atrial fibrillation

C-Mobitz type I (Wenckebach) second degree AV block

D- Mobitz type II second degree AV block

E- Third degree atrioventricular block


[su_spoiler title=”Answer” style=”fancy”]

ECG finding is compatible with type 1 second degree A-V block (Mobitz 1)

The correct answer is C

[/su_spoiler]

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