ACTUAL EXAM 2026/2027 COMPLETE ACCURATE
EXAM REAL QUESTIONS WITH WELL ELABORATED
ANSWERS AND RATIONALES. (100% CORRECT
VERIFIED SOLUTIONS)
1. What is the primary purpose of an EKG?
a) Assess heart rhythm and electrical activity
b) Measure blood pressure
c) Detect lung function
d) Assess kidney function
Answer: a) Assess heart rhythm and electrical activity
Rationale: EKGs record the heart’s electrical impulses to detect arrhythmias, ischemia, or
other cardiac conditions.
2. Which of the following leads is placed on the right arm?
a) RA (Right Arm)
b) LA (Left Arm)
c) RL (Right Leg)
d) LL (Left Leg)
Answer: a) RA (Right Arm)
Rationale: Correct lead placement ensures accurate EKG tracing.
3. What is the normal range for a resting adult heart rate?
a) 60–100 bpm
b) 40–60 bpm
c) 100–120 bpm
d) 120–140 bpm
Answer: a) 60–100 bpm
Rationale: Normal sinus rhythm falls within this range for adults at rest.
4. Which wave represents atrial depolarization on an EKG?
a) P wave
b) QRS complex
c) T wave
d) U wave
,Answer: a) P wave
Rationale: The P wave indicates atrial contraction and depolarization.
5. Which part of the EKG represents ventricular depolarization?
a) QRS complex
b) P wave
c) T wave
d) PR interval
Answer: a) QRS complex
Rationale: The QRS complex shows the electrical activity during ventricular contraction.
6. Which electrode color is usually placed on the left leg in a standard 12-lead EKG?
a) LL (Left Leg) – often red
b) RA – white
c) LA – black
d) V1 – brown
Answer: a) LL (Left Leg) – often red
Rationale: Standardized electrode colors help prevent placement errors.
7. What does the T wave represent?
a) Ventricular repolarization
b) Atrial depolarization
c) Ventricular depolarization
d) PR interval
Answer: a) Ventricular repolarization
Rationale: The T wave indicates recovery of the ventricles before the next beat.
8. What is the correct placement for lead V1?
a) Fourth intercostal space at right sternal border
b) Fifth intercostal space midclavicular line
c) Fourth intercostal space left sternal border
d) Sixth intercostal space midaxillary line
Answer: a) Fourth intercostal space at right sternal border
Rationale: Accurate precordial lead placement ensures reliable EKG readings.
9. What is the standard paper speed for a resting EKG?
a) 25 mm/sec
b) 50 mm/sec
c) 10 mm/sec
d) 5 mm/sec
, Answer: a) 25 mm/sec
Rationale: Standard speed allows consistent measurement of intervals and waves.
10. Which of the following may interfere with EKG quality?
a) Muscle tremors or patient movement
b) Blood pressure cuff
c) Oxygen mask
d) Stethoscope
Answer: a) Muscle tremors or patient movement
Rationale: Movement artifacts can distort the EKG tracing and complicate interpretation.
11. What is the normal PR interval duration?
a) 0.12–0.20 seconds
b) 0.08–0.12 seconds
c) 0.20–0.24 seconds
d) 0.04–0.08 seconds
Answer: a) 0.12–0.20 seconds
Rationale: Normal PR interval reflects proper atrioventricular conduction.
12. What condition is indicated by a prolonged QRS complex?
a) Bundle branch block
b) Sinus tachycardia
c) Atrial fibrillation
d) Normal rhythm
Answer: a) Bundle branch block
Rationale: A widened QRS indicates delayed ventricular conduction.
13. Which of the following is true about artifact removal?
a) Ask the patient to remain still and relax
b) Ignore muscle tremors
c) Increase paper speed
d) Change electrode colors
Answer: a) Ask the patient to remain still and relax
Rationale: Reducing movement minimizes artifacts for a clearer tracing.
14. Which leads view the inferior portion of the heart?
a) II, III, aVF
b) I, aVL
c) V1, V2
d) V4, V5, V6