MAYO ECG EXAM PRACTICE LATEST 2026 UPDATED QUESTIONS
AND VERIFIED 100% SOLUTIONS (2026/2027) GRADE:
A+|STATUS: GUARANTEED PASS
1st degree AV block - Answers -prolonged PR interval
2nd degree AV block type 1 - Answers -PR interval long, longer, drop
the drop is a P wave not followed by a QRS
2nd degree AV block type 2 - Answers -Constant PRI w >.2, random dropped QRS
R waves irregular
3rd degree AV block - Answers -atria and ventricles beat independently of each other
(P waves have no relation to QRS waves)
P and R waves both regular
Sinus Bradycardia - Answers -<60
normal sinus rhythm
normal sinus rhythm - Answers -heart rhythm originating in the sinoatrial node with a resting
rate of 60 to 100 beats per minute
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, Atrial Flutter - Answers -Rate:Atrial 250-350
Ventricular: 100 -175
P: Irregular or absent, often "saw tooth"
QRS: Normal
Conduction: AV Block (2:1 > 3:1, 4:1)
Rhythm: Regular (usually)
PVC (Premature Ventricular Contraction) - Answers -in many cases no P wave followed by a large
QRS complex that is premature, followed by a compensatory pause
ventricular pacing - Answers -spike prior to QRS Complex
atrial pacing - Answers -spike prior to P wave
Premature Junctional Complex - Answers -Arises from an irritable focus within the AV Junction.
Characteristics include an absent or inverted P wave, shortened PR interval (<.12s), and a QRS
complex coming early.
PR interval represents: - Answers -electrical conduction time from the atria to the AV node
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AND VERIFIED 100% SOLUTIONS (2026/2027) GRADE:
A+|STATUS: GUARANTEED PASS
1st degree AV block - Answers -prolonged PR interval
2nd degree AV block type 1 - Answers -PR interval long, longer, drop
the drop is a P wave not followed by a QRS
2nd degree AV block type 2 - Answers -Constant PRI w >.2, random dropped QRS
R waves irregular
3rd degree AV block - Answers -atria and ventricles beat independently of each other
(P waves have no relation to QRS waves)
P and R waves both regular
Sinus Bradycardia - Answers -<60
normal sinus rhythm
normal sinus rhythm - Answers -heart rhythm originating in the sinoatrial node with a resting
rate of 60 to 100 beats per minute
1|Page
, Atrial Flutter - Answers -Rate:Atrial 250-350
Ventricular: 100 -175
P: Irregular or absent, often "saw tooth"
QRS: Normal
Conduction: AV Block (2:1 > 3:1, 4:1)
Rhythm: Regular (usually)
PVC (Premature Ventricular Contraction) - Answers -in many cases no P wave followed by a large
QRS complex that is premature, followed by a compensatory pause
ventricular pacing - Answers -spike prior to QRS Complex
atrial pacing - Answers -spike prior to P wave
Premature Junctional Complex - Answers -Arises from an irritable focus within the AV Junction.
Characteristics include an absent or inverted P wave, shortened PR interval (<.12s), and a QRS
complex coming early.
PR interval represents: - Answers -electrical conduction time from the atria to the AV node
2|Page
