Psvt Vs Svt Ecg. Paroxysmal supraventricular tachycardia psvt is when your fast heartbeat starts in the upper or supraventricular chambers of the heart. This ecg is a difficult one.
This results in a regular but rapid heartbeat that starts and stops abruptly. Svt is often called paroxysmal supraventricular tachycardia psvt because it begins suddenly and ends suddenly. Although there is a broad complex tachycardia hr 100 qrs 120 the appearance in v1 is more suggestive of svt with aberrancy given that the the complexes are not that broad 160 ms and the right rabbit ear is taller than the left.
The only difference between psvt and svt is that the onset of the psvt can be seen as in the example above.
Thu 04 21 2016 00 13 dawn. Narrow complex tachycardias can be very confusing to students of basic level ecg. We usually further divide them into sinus tachycardia and other supraventricular tachycardias. Psvt is due to a mechanism called re entry.
