Quick Arrhythmia Guide
Third Degree Heart Block

Third Degree Heart Block EKG tracing
RhythmRegular, but atrial and ventricular rhythms are independent
RateCharacterized by Atrial rate usually normal and faster than ventricular rate
P WaveNormal shape and size, may appear within QRS complexes
PR IntervalAbsent: the atria and ventricles beat independently.
QRSNormal, but wide if junctional escape focus

Third Degree Heart Block EKG Reference Arrhythmia Guide Arrhythmia Guide