Structured Questions with Correct and
Verified Answers. Graded A+ 2026
Regular
Rate: 60-100
P Wave: Present, upright
PR Interval: 0.12-0.20 sec
QRS: <0.12 sec ANSWER >>> Normal sinus rhythm
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, Regular
Rate: <60
P Wave: Present, upright
PR Interval: 0.12-0.20 sec
QRS: <0.12 sec ANSWER >>> Sinus Bradycardia
Regular
Rate: 100-150
P Wave: Present, upright
PR Interval: 0.12-0.20 sec
QRS: <0.12 sec ANSWER >>> Sinus Tachycardia
IRREGULAR
Rate: depends on underlying rhythm
P wave: Present or hidden in T wave
PR Interval: 0.12-0.20 sec
QRS: <0.12 sec ANSWER >>> Premature Atrial Contraction
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