What does monomorphic VT mean?
When the ventricular activation sequence is constant, the electrocardiographic (ECG) pattern remains the same, and the rhythm is called monomorphic VT (see the image below). Monomorphic VT is most commonly seen in patients with underlying structural heart disease.
What is monomorphic and polymorphic VT?
Monomorphic ventricular tachycardia demonstrates a stable QRS morphology from beat to beat while polymorphic ventricular tachycardia has changing or multiform QRS variance from beat to beat. Torsades de pointes is a polymorphic ventricular tachycardia that occurs in the setting of a long QT interval and appears as …
What is the difference between monomorphic and polymorphic?
The key difference between polymorphic and monomorphic ventricular tachycardia is that polymorphic ventricular tachycardia is a type of abnormally fast heart rate with a continuously varying QRS complex morphology in a surface electrocardiogram, while monomorphic ventricular tachycardia is a type of abnormally fast …
What does monomorphic VT look like?
Very broad QRS complexes (~ 200 ms) with uniform morphology. Fusion and capture beats are seen in the rhythm strip. Brugada’s sign is present: the time from the onset of the QRS complex to nadir of S wave is > 100 ms (best seen in V6)
Is monomorphic ventricular tachycardia regular?
Abstract. Sustained monomorphic ventricular tachycardia is usually regular; that is, it is associated with constant R-R intervals. In several cases, however, the cycles of ventricular tachycardia are more or less variable.
How is monomorphic V-tach treated?
Unstable patients with monomorphic VT should be immediately treated with synchronized direct current (DC) cardioversion, usually at a starting energy dose of 100 J (monophasic; comparable biphasic recommendations are not currently available). Unstable polymorphic VT is treated with immediate defibrillation.
What are VT’s?
Ventricular tachycardia heartbeat This condition may also be called V-tach or VT. A healthy heart typically beats about 60 to 100 times a minute at rest. In ventricular tachycardia, the heart beats faster, usually 100 or more beats a minute.
What’s the difference between VT and SVT?
Tachycardia can be categorized by the location from which it originates in the heart. Two types of tachycardia we commonly treat are: Supraventricular tachycardia (SVT) begins in the upper portion of the heart, usually the atria. Ventricular tachycardia (VT) begins in the heart’s lower chambers, the ventricles.
Do you shock monomorphic tachycardia?
What is Vtech heart rhythm?
Ventricular tachycardia (VT or V-tach) is a type of abnormal heart rhythm, or arrhythmia. It occurs when the lower chamber of the heart beats too fast to pump well and the body doesn’t receive enough oxygenated blood.
What is the difference between monomorphic and polymorphic ventricular tachycardia?
VT is considered sustained if it is continuous for at least 30 seconds. If the QRS complex has primarily a single morphology, the VT is monomorphic, whereas if the QRS complex varies, the VT is polymorphic.