DHA Dubai · Medical Sciences & Healthcare

Emergency Medicine, Infection Control and UAE Healthcare Standards

51 practice questions, each with the answer and an explanation.

Practise Emergency Medicine, Infection Control and UAE Healthcare Standards now

Random questions from this topic, one at a time. You see the answer and the explanation straight after each one.

All 51 questions

  1. A 60-year-old male collapses suddenly in the hospital reception area. The primary nurse confirms unresponsiveness and absence of a carotid pulse. The automated external defibrillator (AED) is applied…
  2. A healthcare professional sustains an accidental deep percutaneous needlestick injury with a hollow-bore needle contaminated with fresh blood from a known HIV-positive patient with detectable viral lo…
  3. A 74-year-old inpatient with severe hospital-acquired pneumonia develops profuse, foul-smelling watery diarrhea (8 unformed stools per day) and abdominal cramping on day 7 of intravenous Piperacillin…
  4. Under the UAE Unified Healthcare Professional Qualification Requirements (PQR), which regulatory authority oversees medical and nursing professional licensing across Dubai, including private and publi…
  5. A 4-year-old child presents with high fever, barking cough, inspiratory stridor at rest, and intercostal retractions. What is the most likely diagnosis, and what is the primary initial medical treatme…
  6. According to international clinical safety and World Health Organization (WHO) surgical guidelines, what is the mandatory formal pause performed in the operating room immediately prior to skin incisio…
  7. A 32-year-old male is brought to the emergency department after a high-speed motor vehicle collision. He is cyanotic, tachypneic, and hypotensive (BP 70/40 mmHg). Examination reveals severe respirator…
  8. In healthcare epidemiology, what type of air handling ventilation is required in an Airborne Infection Isolation Room (AIIR) to care for patients with pulmonary tuberculosis or measles?
  9. A 68-year-old male is admitted with septic shock secondary to acute ascending cholangitis. Central venous catheterization is indicated. To minimize the incidence of Central Line-Associated Bloodstream…
  10. A 25-year-old female presents to the emergency department after being stung by a bee. Within 5 minutes, she develops generalized urticaria, facial angioedema, inspiratory stridor, and dizziness. Vital…
  11. Under the UAE Federal Law regarding medical liability, what is the fundamental prerequisite required before performing any elective surgical procedure on a competent adult patient?
  12. A 45-year-old male is admitted to the intensive care unit with acute respiratory distress syndrome (ARDS) following aspiration. He is mechanically ventilated. According to the ARDSNet protocol, what l…
  13. What is the single most effective, evidence-based measure for preventing healthcare-associated infections (HAIs) across clinical settings?
  14. A 55-year-old male presents with acute altered mental status and hyperthermia (39.8 C) following a collapse while running an outdoor marathon in Dubai during August (ambient temperature 43 C, relative…
  15. A 28-year-old female presents with acute dysuria, increased urinary frequency, and suprapubic pain without fever, flank pain, or costovertebral angle tenderness. Urinalysis demonstrates pyuria and pos…
  16. According to the Dubai Health Authority (DHA) and international immunization schedules, what live-attenuated vaccine administered at birth is designed to prevent severe disseminated forms of tuberculo…
  17. A 65-year-old female undergoes elective laparoscopic cholecystectomy. To prevent surgical site infections (SSIs), within what time window relative to surgical incision should preoperative intravenous…
  18. A 50-year-old male presents to the triage desk with sudden-onset unilateral facial droop, right-sided arm drift, and slurred speech that began 45 minutes ago. What is the immediate priority diagnostic…
  19. In healthcare waste management guidelines enforced by the Dubai Health Authority (DHA), which standardized receptacle color is designated for the disposal of clinical biohazardous infectious waste (e.…
  20. A 30-year-old female presents with acute severe right lower quadrant abdominal pain, nausea, and localized tenderness at McBurney's point with positive Rovsing and obturator signs. White blood cell co…
  21. A 40-year-old male is admitted with severe acute pancreatitis. Which validated scoring system uses five clinical parameters measured at admission (Age > 55, WBC > 16,000, Blood Glucose > 11 mmol/L, Se…
  22. A 24-year-old female presents to the emergency department after rolling her right ankle while playing volleyball. The physician applies the Ottawa Ankle Rules to determine whether plain radiography of…
  23. In hospital accreditation and quality management under Dubai Health Authority (DHA) and Joint Commission International (JCI) frameworks, what is a 'Sentinel Event' defined as?
  24. A 35-year-old male with no previous medical history presents with sudden high fever, chills, severe headache, photophobia, and a non-blanching purpuric petechial skin rash. Kernig and Brudzinski signs…
  25. In accordance with Advanced Trauma Life Support (ATLS) principles, what is the mandatory sequence of the initial primary survey?
  26. A 21-year-old male presents with periumbilical pain migrating to the right lower quadrant, anorexia, fever, and leukocytosis. Which sign elicits pain upon internal rotation of the flexed right hip?
  27. A 65-year-old female with a history of prior hysterectomy presents with crampy abdominal pain, vomiting, obstipation, and high-pitched tinkling bowel sounds. What is the most common etiology?
  28. A 74-year-old male with atrial fibrillation presents with sudden excruciating abdominal pain. Physical examination reveals a soft, non-tender abdomen with minimal guarding. What is the diagnosis?
  29. A 48-year-old female presents with sudden severe epigastric pain. An erect chest radiograph demonstrates crescent-shaped free air beneath the right hemidiaphragm. What is the diagnosis?
  30. According to the Parkland formula, how much crystalloid fluid should be administered in the first 24 hours to a 70-kg adult with second- and third-degree burns covering 40% of total body surface area?
  31. In assessing a patient using the Glasgow Coma Scale (GCS), which response combination yields a total score of 9 points?
  32. A patient with a closed tibial fracture develops severe, disproportionate leg pain. What is the most sensitive early clinical finding of acute compartment syndrome?
  33. A 24-year-old male presents 6 hours after ingesting 25 grams of acetaminophen with toxic suicidal intent. What specific antidote must be administered immediately?
  34. A comatose patient presents with a respiratory rate of 6 breaths per minute and pinpoint pupillary constriction. What competitive opioid antagonist is indicated?
  35. An intentional overdose of propranolol produces severe bradycardia of 38 bpm and profound hypotension refractory to fluids and atropine. What is the specific first-line antidote?
  36. A farmer presents with severe salivation, lacrimation, urination, defecation, bronchospasm, and pin-point pupils after spraying crops. What is the initial muscarinic antagonist of choice?
  37. A patient pulled from an enclosed house fire presents with headache, confusion, cherry-red skin appearance, and normal pulse oximetry. What is the definitive treatment?
  38. Which clinical constellation characterized by autonomic instability, hyperthermia, ocular clonus, tremor, and hyperreflexia distinguishes Serotonin Syndrome under the Hunter criteria?
  39. Under Dubai Health Authority (DHA) clinical governance and waste management guidelines, which color-coded waste receptacle is mandatory for hazardous infectious clinical waste?
  40. Under UAE Federal Law on Medical Liability, what is the mandatory requirement before performing any surgical procedure on a conscious adult patient with full mental capacity?
  41. Under Dubai Health Authority regulations, within what timeframe must a licensed healthcare professional report a diagnosed highly contagious Group A communicable disease?
  42. A hospitalized patient develops a 55% drop in platelet count on day 7 of subcutaneous unfractionated heparin therapy with new lower extremity DVT. What is the immediate management?
  43. A 30-year-old male presents with tinnitus, tachypnea, nausea, and vomiting after ingesting an unknown medication. Arterial blood gas shows mixed respiratory alkalosis and metabolic acidosis. What drug…
  44. In acute severe salicylate poisoning with altered mental status and metabolic acidosis, what therapy enhances urinary elimination by ion trapping?
  45. A patient with bipolar disorder taking lithium presents with coarse tremors, ataxia, dysarthria, and confusion. Serum lithium is 4.2 mEq/L. What is the definitive treatment?
  46. A psychiatric patient receiving haloperidol develops severe 'lead-pipe' muscle rigidity, fever of 40 C, autonomic instability, and serum creatine kinase of 45000 U/L. What is the diagnosis?
  47. A 78-year-old female taking digoxin and furosemide presents with nausea, yellow-green visual halos (xanthopsia), and ventricular ectopy. Serum potassium is 6.2 mEq/L. What is the specific antidote?
  48. A 22-year-old male presents comatose with QRS duration of 140 ms and rightward axis deviation on ECG after an intentional tricyclic antidepressant overdose. What medication narrows the QRS complex?
  49. A patient presents with visual blurring described as 'being in a snowstorm', optic disc hyperemic edema, and high anion gap metabolic acidosis after drinking illicit alcohol. What is the specific anti…
  50. A 26-year-old male found unresponsive after ingesting antifreeze develops flank pain and acute renal failure. Urine microscopy shows envelope-shaped calcium oxalate crystals. What toxic alcohol was in…
  51. In therapeutic drug monitoring for intravenous aminoglycosides (such as gentamicin or amikacin), what pharmacokinetic parameter is monitored to minimize the risk of ototoxicity and nephrotoxicity?

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