Psvt Vs Svt Ecg. This ecg is a difficult one. A premature beat gets caught in a loop.
However on closer inspection there are signs of av dissociation with superimposed p waves visible in v1. Psvt is due to a mechanism called re entry. Thu 04 21 2016 00 13 dawn.
Narrow complex tachycardias can be very confusing to students of basic level ecg.
Thu 04 21 2016 00 13 dawn. It occurs when a short circuit rhythm develops in the upper chamber of the heart. In pat s the origin of the rapid beats is clearly in the atria whereas in psvt s and svt s a strict determination cannot be made. There are very many rhythms that fall into the broad category of narrow complex tachycardia.
