What is Fascicular VT?
What is Fascicular VT?
Idiopathic fascicular ventricular tachycardia is an important cardiac arrhythmia with specific electrocardiographic features and therapeutic options. It is characterized by relatively narrow QRS complex and right bundle branch block pattern. The QRS axis depends on which fascicle is involved in the re-entry.
What is verapamil sensitive VT?
Verapamil sensitive ventricular tachycardia is a form of idiopathic ventricular tachycardia that occurs with a structurally normal heart arising from the left posterior fascicle. This manifests as a right bundle branch block pattern on the ECG with a left axis deviation.
Why does hypertension increase left ventricular size?
High blood pressure makes your heart work harder than normal. The extra work it takes to pump blood can cause the muscle in the left ventricle walls to get larger and thicker. Intense athletic training can sometimes lead to an increase in the size and thickness of the left ventricle walls.
What is capture beat?
The fusion beat occurs when a supraventricular impulse (following the first P wave) causes ventricular activation, which fuses with the complex originating in the ventricle, producing a hybrid complex. The complex following the second P wave has the appearance of a normal QRS complex and is known as a capture beat.
Why is verapamil contraindicated in ventricular tachycardia?
The use of intravenous diltiazem or verapamil is contraindicated in patients with ventricular tachycardia. IV administration of a calcium channel blocker can precipitate cardiac arrest in such patients.
What is idiopathic VT?
Idiopathic ventricular tachycardia (VT) is an uncommon form of VT that is seen in patients without structural heart disease. It is commonly seen in young patients and usually has a benign course. Recent studies have delineated the mechanisms and anatomical locations of this form of VT.
What causes bidirectional ventricular tachycardia?
Bidirectional ventricular tachycardia (BDVT), a rare ventricular arrhythmia, is commonly caused by digitalis toxicity or channelopathies and is rarely caused by aconite toxicity, myocarditis, infarction, or sarcoidosis.
Is polymorphic v tach the same as torsades?
Polymorphic ventricular tachycardia This is commonly referred to as torsade de pointes, but it’s actually not the same thing. Polymorphic ventricular tachycardia may be caused by several etiologies (e.g., congenital QT prolongation, acquired QT prolongation, ischemia, Takotsubo’s cardiomyopathy).
Can high blood pressure cause left ventricular hypertrophy?
Factors that can cause your heart to work harder include: High blood pressure (hypertension). This is the most common cause of left ventricular hypertrophy.