Some observations on abnormal rhythms:Part 2
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1-SA block.
2-Atrial fibrillation.
3-Severe hyperkalemia.
4-AV nodal rhythm ( the P wave might be hidden within the QRS complexes).
A long PAUSE interrupting a regular rhythm might be caused by:
1-a dropped beat as a result of 2nd degree AV block.
2-a dropped beat as a result of SA block.
3-a blocked or non conducted atrial extrasystole.
NB: extrasystoles occur PREMATURELY , escape beats occur LATE.
NB: when the PR interval becomes progressively shorter, AV dissociation is usually present.
Tags: Notes, Cardiology, ECG
Category: Cardiology Notes
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