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Sino-atrial exit block

Atrial Bigeminy Vs Possible Sino-atrial Exit Block

Mon, 10/05/2015 - 17:26 -- Dawn

This three-lead rhythm strip is from an 85 year-old-woman for whom we have no other information, unfortunately.  It shows an obvious, regular bigeminal pattern.  There are many rhythms that can cause bigeminy, with regular, paired beats.  So, how do we analyze this rhythm? 

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