Polymorphic V Tach Vs V Fib

What is the difference between ventricular tachycardia and ventricular fibrillation.

Polymorphic v tach vs v fib. With polymorphic v tach the ekg pattern is more irregular due to the origins of the signal conduction in the ventricles. Poly v tach comes in all sorts of flavors but you still see some sort of wide complex. V tach can either be monomorphic or polymorphic. Coronary catheterization angiogram cardiac computerized tomography ct magnetic resonance imaging mri summary of v tach and v fib.

In v tach as it s commonly called the heart rate can be 170 beats per minute or even faster. Ventricular fibrillation always is an arrest rhythm while pulseless ventricular tachycardia is the arrest rhythm. If polymorphic vt is stable the acls tachycardia algorithm should be used to treat the patient. When the qrs complex varies from beat to beat the rhythm is described as polymorphic vt and suggests a variable electrical activation sequence.

Ventricular tachycardia may be narrow or broad complex while fibrillation cannot be subdivided. Polymorphic vt is typically seen in association with acute myocardial infarction or ischemia mi ventricular hypertrophy and a number of genetic mutations that affect cardiac ion channels see table 249 1. In monomorphic v tach the ekg tracing is consistent and follows the same pattern. Wide complex tachycardia is defined as a qrs greater than 12 secs and can be vtach monomorphic and polymorphic supraventricular tachycardia with aberrancy a pre excitation tachycardia or a.

The commonest cause of pvt is myocardial ischaemia. Your pt could be in poly v tach and talking to you but your v fib pt will surely not. Ventricular fibrillation vfib electrocardiogram ecg blood tests. Have been summarized below.

Polymorphic ventricular tachycardia. Sustained polymorphic vt usually degenerates into ventricular fibrillation vf. Unstable polymorphic ventricular tachycardia is treated with unsynchronized shocks defibrillation. Noda t shimizu w taguchi a et al.

Defibrillation is used because synchronization is not possible. Malignant entity of idiopathic ventricular fibrillation and polymorphic ventricular tachycardia initiated by premature extrasystoles originating from the right. V fib there is no qrs complex and no full contraction. Polymorphic ventricular tachycardia pvt is a form of ventricular tachycardia in which there are multiple ventricular foci with the resultant qrs complexes varying in amplitude axis and duration.

Torsades de pointes tdp is a specific form of polymorphic ventricular tachycardia occurring in the context of qt prolongation. The points of difference between ventricular tachycardia and ventricular fibrillation.