CHAPTER 35 DYSRHYTHMIAS QUESTIONS AND ANSWERS 2024/25

CHAPTER 35 DYSRHYTHMIAS QUESTIONS
AND ANSWERS 2024/25
Normal Sinus Rhythm - ANSWER 60-100 bpm

all complexes normal and evenly spaced (P, QRS, T)



Sinus Bradycardia - ANSWER < 60 bpm with normal sinus rhythm



Sinus Tachycardia - ANSWER 101-200 bpm with normal sinus rhythm



Premature Atrial Contraction (PAC) - ANSWER 60-100 bpm w/irregular rhythm; abnormal P wave, normal
PR interval & QRS complex



Paroxysmal Supraventricular Tachycardia (PSVT) - ANSWER 150-220 bpm w/regular rhythm; abnormal P
wave (may be hidden in preceding T wave), normal/shortened PR interval, normal QRS complex



Atrial Flutter - ANSWER 200-350 bpm w/irregular rhythm; ventricular rhythm < or > 100 bpm w/irregular
rhythm; fluttering (sawtooth) P waves, nonmeasurable PR intervals, normal QRS complex



Atrial Fibrillation - ANSWER 350-600 bpm w/irregular rhythm; ventricular rhythm < or > 100 bpm
w/irregular rhythm; fibrillatory P waves, nonmeasurable PR intervals, normal QRS complex



Junctional Dysrhythmias - ANSWER 40-180 bpm w/regular rhythm; inverted (may be hidden in QRS) P
waves, shortened PR intervals, normal QRS complex



First Degree AV Block - ANSWER normal & regular rhythm; normal P wave, >0.20 sec PR interval, normal
QRS complex



2nd Degree AV Block Type I (Mobitz 1, Wenckebach) - ANSWER Atrial: normal & regular rhythm,
Ventricular: slower & irregular rhythm; normal P wave, progressive lengthening PR interval, normal QRS
complex w/pattern of one blocked (nonconducted) QRS