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. A patient’s oxygen saturation suddenly drops to 85%. What is the nurse’s first action? ⏰️
A) Call the doctor
B) Increase oxygen supply
C) Check airway and breathing
D) Start CPR

A patient develops sudden bradycardia, hypotension, and peaked T waves on ECG. Which is the most immediate treatment? ⏰️
A) Calcium gluconate
B) Insulin with glucose
C) Sodium bicarbonate
D) Furosemide

What is the primary mechanism of action of CRISPR-based gene editing? ⏰️
A) Protein synthesis inhibition
B) DNA sequence modification
C) RNA transcription blocking
D) Enzyme denaturation

Which class of drugs is now commonly used as first-line therapy in heart failure with reduced ejection fraction (HFrEF)? ⏰️
A) Beta-blockers only
B) ACE inhibitors only
C) SGLT2 inhibitors
D) Calcium channel blockers

Which biomarker is most specific for early diagnosis of acute myocardial infarction? ⏰️
A) CK-MB
B) Troponin I
C) Myoglobin
D) LDH

In septic shock, which parameter is most accurate to assess tissue perfusion? ⏰️
A) Blood pressure
B) Central venous pressure (CVP)
C) Serum lactate
D) Heart rate

In ARDS management, what is the recommended ventilation strategy? ⏰️
A) High tidal volume ventilation
B) Low tidal volume ventilation
C) No PEEP
D) High oxygen only

Which drug is first-line for anaphylactic shock in ICU? ⏰️
A) Dopamine
B) Epinephrine
C) Hydrocortisone
D) Antihistamines

Which electrolyte imbalance is most commonly associated with peaked T waves on ECG? ⏰️
A) Hypokalemia
B) Hyperkalemia
C) Hyponatremia
D) Hypercalcemia