Digoxin effect on ECG

This forum made possible through the generous support of SDN members, donors, and sponsors. Thank you.

aspiringmd1015

Full Member
7+ Year Member
Joined
Mar 5, 2014
Messages
1,098
Reaction score
102
how does digoxin shorten QT interval and decrease Action potenial duration?

Members don't see this ad.
 
Last edited:
Where did you come across it shortening QT interval and AP duration?
Since it leads to hyperkalemia, id think it would in fact prolong QT interval (lesser gradient for the outward K efflux during phase III).
 
My understanding is that Digoxin increases contractility which shortens QT interval for its ventricular contraction. PR interval increases however, due to vagal input of digoxin at the AV node.
 
Top