Sinus Bradycardia - EKG Reference

Sinus Bradycardia EKG tracing


Caliper Time Interval: ___ seconds

Key Features

RateSlow (< 60 bpm)
P WaveNormal
PR IntervalNormal (0.12-0.20 sec)
QRSNormal (0.06-0.10 sec)

Sinus Bradycardia EKG Reference

Definition of Sinus Bradycardia

Sinus bradycardia is a heart rhythm that originates in the sinus node with a rates less than 60 beats per minute. Sinus bradycardia is a common condition in both healthy individuals, particularly athletes. It can also occur normally during sleep.

Inappropriate Sinus Bradycardia

Inappropriate Sinus Tachycardia can be caused by numerous factors, including: hypothermia, hypothyroidism, sick sinus syndrome), seizure and poisoning.

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