Second Degree Heart Block Type I Arrhythmia Guide

Second Degree Heart Block Type I EKG tracing
RhythmIrregular but with progressively longer PR interval lengthening
RateThe underlying rate
P WaveNormal
PR IntervalProgressively longer until a QRS complex is missed, then cycle repeats
QRSNormal (0.06-0.10 sec)
Notes 



Second Degree Heart Block Type I EKG Reference Arrhythmia Guide Arrhythmia Guide