DHA Clinical Practice & Guidelines 2

Question 1

A 58-year-old male presents with crushing chest pain radiating to the left arm for 30 minutes. ECG shows ST elevation in leads II, III, and aVF. Which coronary artery is most likely occluded?

Accepted Answer

Right coronary artery

Answer

ST elevation in leads II, III, and aVF indicates an inferior myocardial infarction, which is most commonly caused by occlusion of the right coronary artery (RCA), which supplies the inferior wall of the left ventricle in most patients.

Question 2

According to DHA clinical guidelines, what is the recommended first-line treatment for newly diagnosed type 2 diabetes mellitus in an otherwise healthy adult?

Accepted Answer

Metformin

Answer

Metformin remains the first-line pharmacological treatment for type 2 diabetes mellitus per international guidelines endorsed by DHA. It is cost-effective, weight-neutral, and has a proven cardiovascular safety profile.

Question 3

A patient is prescribed warfarin for atrial fibrillation. The therapeutic INR range for this indication is:

Accepted Answer

2.0–3.0

Answer

The therapeutic INR range for atrial fibrillation anticoagulation with warfarin is 2.0–3.0. This range balances stroke prevention with acceptable bleeding risk.

Question 4

Which of the following is the most sensitive early indicator of acute kidney injury (AKI)?

Accepted Answer

Urine output less than 0.5 mL/kg/hr for 6 hours

Answer

Urine output decrease (<0.5 mL/kg/hr for ≥6 hours) is an early sensitive indicator of AKI per KDIGO criteria. Serum creatinine rises later as it only increases when GFR falls by approximately 50%.

Question 5

A 35-year-old pregnant woman at 32 weeks gestation presents with blood pressure 160/110 mmHg, proteinuria 3+, and headache. What is the most appropriate immediate management?

Accepted Answer

Intravenous magnesium sulfate and antihypertensive therapy

Answer

This presentation is consistent with severe preeclampsia. IV magnesium sulfate is given for seizure prophylaxis (eclampsia prevention) and IV antihypertensives (labetalol or hydralazine) are used for BP control. Delivery is planned but not always immediate.

DHA - Dubai Health Authority Practice Test

DHA - Dubai Health Authority Practice Test

DHA Clinical Practice & Guidelines 2