DHA Prometric 2

Question 1

A 40-year-old male presents with painless hematuria. Cystoscopy reveals a bladder mass. Biopsy confirms transitional cell carcinoma (urothelial carcinoma). Which of the following is the most important modifiable risk factor for bladder cancer?

Accepted Answer

Cigarette smoking

Answer

Cigarette smoking is the most important risk factor for bladder cancer, responsible for approximately 50% of cases. Tobacco carcinogens (aromatic amines, nitrosamines) are excreted in urine, maintaining prolonged contact with the bladder epithelium. Other risk factors include occupational exposure to aromatic amines (dye industry), cyclophosphamide, and schistosomiasis (squamous cell carcinoma in endemic areas).

Question 2

A physician auscultates a mid-systolic click followed by a late systolic murmur at the apex. Which valvular condition does this suggest?

Accepted Answer

Mitral valve prolapse (MVP)

Answer

A mid-systolic click followed by a late systolic murmur heard best at the apex is the classic auscultatory finding of mitral valve prolapse (MVP). The click results from sudden tensing of the mitral valve leaflet as it billows into the left atrium. MVP is the most common valvular abnormality in the general population.

Question 3

The DHA Prometric examination for physicians covers which clinical domains?

Accepted Answer

Clinical medicine, patient safety, medical ethics, pharmacology, and UAE healthcare regulations

Answer

The DHA Prometric examination is comprehensive and covers multiple clinical and regulatory domains: clinical medicine (across specialties), patient safety (DHA/JCI standards), medical ethics (UAE law and professional conduct), pharmacology (drug interactions, DHA formulary), and UAE healthcare regulations (licensing, patient rights, reporting requirements).

Question 4

A 55-year-old male patient with a BMI of 34, hypertension, and type 2 diabetes presents with loud snoring, excessive daytime sleepiness, and witnessed apneas during sleep. What is the most likely diagnosis?

Accepted Answer

Obstructive Sleep Apnea (OSA)

Answer

The triad of loud snoring, excessive daytime sleepiness, and witnessed apneas in an obese middle-aged male with multiple metabolic risk factors is classic for obstructive sleep apnea. OSA is confirmed by polysomnography (PSG) with an Apnea-Hypopnea Index (AHI) ≥5/hour.

Question 5

Which of the following correctly defines 'sensitivity' of a diagnostic test?

Accepted Answer

The probability that a person with the disease has a positive test result (true positive rate)

Answer

Sensitivity = True Positives / (True Positives + False Negatives). It is the proportion of diseased individuals correctly identified by the test as positive (true positive rate). A highly sensitive test misses few cases (low false negative rate) — useful for ruling OUT disease (SnNout: Sensitive test, Negative result rules OUT disease).

DHA - Dubai Health Authority Practice Test

DHA - Dubai Health Authority Practice Test

DHA Prometric 2