What is Belhassen ventricular tachycardia?
Belhassen ventricular tachycardia (BVT), or verapamil-sensitive ventricular tachycardia, is a subset of ventricular tachycardia that predominantly originates in the anterior fascicle [1].
What is idiopathic ventricular tachycardia?
Idiopathic ventricular tachycardia is defined as VT that occurs in patients without structural heart disease, metabolic abnormalities, or the long QT syndrome. In the United States, idiopathic VT typically arises in the right ventricular outflow tract (RVOT).
What causes Fascicular ventricular tachycardia?
Causes. Usually occurs in young healthy patients (15-40 years of age; 60-80% male). Most episodes occur at rest but may be triggered by exercise, stress and beta agonists. The mechanism is re-entrant tachycardia due to an ectopic focus within the left ventricle.
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.
Can AFIB cause ventricular tachycardia?
Atrial fibrillation increases the risk of recurrent ventricular tachyarrhythmias in implantable cardioverter defibrillator recipients.
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 the life expectancy of someone with ventricular tachycardia?
In patients with ischemic cardiomyopathy and nonsustained VT, sudden-death mortality approaches 30% in 2 years. In patients with idiopathic VT, the prognosis is excellent, with the major risk being injury incurred during syncopal spells.
Which is worse atrial fibrillation or ventricular tachycardia?
Is AFib or VFib more serious and dangerous? By far, VFib is more serious. If ventricular fibrillation isn’t treated immediately, the patient will have a “sudden death” or “cardiac arrest” and die.
Why are calcium channel blockers not used in ventricular tachycardia?
Calcium channel blockers have no proven depressant effect on accessory pathway conduction. Similarly, the value of these agents in the treatment of ventricular tachycardia in association with chronic coronary artery disease and idiopathic dilated cardiomyopathy is rather limited.
Why verapamil should not be used in VT?
Does tachycardia damage the heart?
Tachycardia may not cause any symptoms or complications. But if left untreated, some forms of tachycardia can lead to serious health problems, including heart failure, stroke or sudden cardiac death.
Do calcium channel blockers treat tachycardia?
Calcium channel blockers are especially effective in atrial tachycardia with triggered activity as the underlying mechanism. Beta-blockers can reduce the frequency and severity of atrial tachycardia episodes by controlling ventricular response.
Do calcium channel blockers cause tachycardia?
Serious side effects of dihydropyridine calcium channel blockers may include: Bradycardia (low heart rate) Tachycardia (rapid heartbeats) Peripheral edema (swelling beneath the skin due to accumulation of fluid)
Does verapamil help with tachycardia?
Verapamil remains the most widely used calcium antagonist for the treatment of cardiac arrhythmias. It is the most potent and effective drug for the acute treatment of paroxysmal supraventricular tachycardia particularly, circus movement tachycardia with or without pre-excitation. 2.
What is the most common cause of tachycardia?
Atrial fibrillation (A-fib). This is the most common type of tachycardia. Chaotic, irregular electrical signals in the upper chambers of the heart (atria) cause a fast heartbeat. A-fib may be temporary, but some episodes won’t end unless treated.
Can tachycardia be cured?
Tachycardia that puts you in danger doesn’t go away on its own. You’ll need to live a healthier lifestyle and take medicines to control it. You may also need to have a procedure, such as an ablation, to help you manage it.
What is the drug of choice for tachycardia?
Verapamil is the drug of choice for initial management of AV-junctional tachycardia for which a combination with digitalis may be considered. An alternative combination is that of a beta-adrenergic blocker and digitalis. For the acute treatment of ventricular tachycardias, lidocain has proved most effective.