Cardiology

Question 1

A very tall and thin 38 year old reports for review with complaints of tiredness and dyspnoea on exertion. He has a history of recurrent shoulder subluxation. He has left ventricular hypertrophy, low-pitched diastolic murmur at the lower sternal edge, and systolic thrill at the base of the heart. What diagnosis best fits this clinical picture?

Answer 1

Aortic regurgitation in a patient with marfanoid habitus.

Question 2

Elderly normotensive man with severe LV dysfunction presents with broad complex tachycardia. Pulse=145bpm. History of LBBB. What is the first choice treatment for the underlying rhythm?

Answer 2

Amiodarone

Question 3

An elderly man presents to A&E with paroxysmal supraventricular tachycardia. What ion channel closure is responsible for rapid repolarisation phase(phase 3) of the cardiac action potential?

Answer 3

Potassium