PAPER 2026 QUESTIONS WITH SOLUTIONS
GRADED A+
◉ How long is a big box (5 small boxes) on an ECG rhythm strip?
Answer: 0.2 seconds
◉ How many boxes on an ECG rhythm strip is = to 1 second? Answer:
5 big boxes
◉ What does the P wave represent? Answer: atrial depolarization
◉ What does the QRS complex represent? Answer: ventricular
depolarization
◉ What does the T wave represent? Answer: ventricular repolarization
◉ What does a U wave indicate? Answer: Possible hypokalemia
◉ What does the QT interval represent? Answer: the total time required
for ventricular depolarization and repolarization
, ◉ How long should the PR interval be? Answer: 3-5 small boxes (.12-
.20 seconds)
◉ How long should QRS complex be? Answer: less than 0.12 seconds
(3 little boxes)
◉ What does ST segment elevation indicate? Answer: myocardial
infarction
◉ What does ST segment depression indicate? Answer: myocardial
ischemia
◉ How long should the QT interval be? Answer: less than half of the R-
R interval
◉ What is sinus arrhythmia? Answer: everything is within normal limits
on EKG except the R-R interval is variable
◉ What is the treatment for symptomatic sinus bradycardia? (And Sinus
Exit Block) Answer: -oxygen
-atropine
-pacemaker may be required