Heart Rhythms (EKG)
Study online at https://quizlet.com/_j1shin
1. normal sinus rhythm regular rhythm of the heart cycle stimulated by the SA node (average rate of
(NSR) 60-100 beats/minute)
2. Sinus Bradycardia <60 bpm, caused by SA node
3. Sinus Tachycardia >100 bpm, caused by SA node
***there is a P wave for every QRS complex (count small bumps between tall
spikes to help differentiate this from atrial flutter)
4. Premature Atrial irregular heart rhythm characterized by atrial contractions occurring before
Contraction (PAC) the expected time
5. Sinus Arrest - SA node doesn't fire
- notice absence of P-wave for a complete cycle (a missed cycle)
6. atrial fibrillation occurs when the normal rhythmic contractions of the atria are replaced by
rapid irregular twitching of the muscular heart wall
7.
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