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Doctor insights on: How Do Class 1b Antiarrhythmic Drugs Help In Treating Ventricular Fibrillation

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How do class 1b antiarrhythmic drugs help in treating ventricular fibrillation?

How do class 1b antiarrhythmic drugs help in treating ventricular fibrillation?

Sodium Channels: Sodium channels are responsible for the action potential, the depolarization of the heart. These drugs decrease the excitability of the heart because they interfere with the sodium channels. So it will help against ventricular fibrillation. ...Read more

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Dr. Michael Zevitz
571 doctors shared insights

Ventricular Fibrillation (Definition)

fibrillation of ventricle results in cardiac arrest and sudden cardiac death due to very fast (more tan 300 beats/min) ...Read more


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How do antiarrythmic drugs help in the treatment of ventricular fibrillation?

How do antiarrythmic drugs help in the treatment of ventricular fibrillation?

Channel Poisons.: All antiarrhythmic medications are targeted at the channels that allow sodium, potassium, and calcium into and out of cardiac muscles, myocytes. They target certain channels at a cellular level to slow or break the abnormal rhythm. They often do nothing to fix or correct the problem. ...Read more

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Whats your pulse in ventricular fibrillation?

Whats your pulse in ventricular fibrillation?

Pulse: You should not able to feel any pulse since the heart is not able to pump any blood ...Read more

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When should u worry about escape rhytms and ventricular fibrillation due to overactive parasympathic nervous system? And heartblock?

When should u worry about escape rhytms and ventricular fibrillation due to overactive parasympathic nervous system? And heartblock?

Complicated question: Hard to answer without more info and more space. Escape rhythms are like a "back-up" rhythm, and are generally protective rather than concerning. Lower grade heart block also is usually not symptomatic, and it doesn't sound like you're dealing with anything that might progress to 3rd degree AV block. As for VFib, an overactive parasympathetic system shouldn't really put you at risk for that. ...Read more

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Can small VSD cause ventricular fibrillation in young adult ? Ped. Cardiologist said no need for SX, because VSD is too small.very worried !

Can small VSD cause ventricular fibrillation in young adult ? Ped. Cardiologist said no need for SX, because VSD is too small.very worried !

Complicated question: Use HealthTap Prime to get better advice, as we're limited in characters in this forum. How young is the young adult? Half or more of VSDs can close (or shrink) with age. So there may be time to grow out of it. Large VSDs are associated with arrhythmias like VFib (upto 25%). If you've had VFib, that's one thing, but if you've never had it, then surgery isn't preventive & carries its own risk. FYDA ...Read more

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Is it common for people with CHF to experience ventricular fibrillation?

Yes: Usually propel who have CHF have a poor lv function; less than 35%. With this diagnosis your heart has the propensity to go into very dangerous rhythms: ventricular tachycardia and ventricular fibrillation. With these arrhythmias you are rendered dead, without a blood pressure, etc. Hence, why you are recommended to get an implantable cardioverter defibrillator when you have a cardiomyopathy. ...Read more

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What is the difference between atrial fibrillation and ventricular fibrillation?

What is the difference between atrial fibrillation and  ventricular fibrillation?

It depends: Ventricular fibrillation is from the bottom chamber; vf is worse; it usually causes cardiac arrest which is often fatal. Atrial fibrillation - from the top chamber- while not as severe, also has significant health risks. It increases the risk of stroke, which can be disabling or fatal. ...Read more

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What makes atrial fibrillation not immediately life threatening while ventricular fibrillation is?

What makes atrial fibrillation not immediately life threatening while ventricular fibrillation is?

A circuit breaker: The rhythms in the top chamber during atrial fibrillation can reach and exceed 600 bpm. If this were conducted directly to the lower chamber, it would be as fatal as ventricular fibrillation. However, nature built in a circuit breaker called the av node between the two such that only some of the top chamber heartbeats in fibrillation make it to the bottom chamber. ...Read more

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How long does ventricular fibrillation last?

How long does ventricular fibrillation last?

Ventricular or Atria: Fibrillation is a random chaiotic electrical pattern. Atrial fibrillation is common an some older adults live in continuous a-fib and feel ok while on medications that slow the ventricular response to the atrial rate. Ventricular fibrillation is not tolerated, meaning someone having true ventricular fibrillation will loose consciousness in seconds. True vf is life threatening in seconds. ...Read more

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What is the disease where ventricular fibrillation happens all the time or a lot of the time?

V-fib???: V-fib that lasts more than a few seconds is typically lethal and results in sudden death. Atrial fibrillation (a-fib) is a different thing entirely, which is a common heart rhythm abnormality. Some people live in constant afib, some people their afib is come-and-go. If it is afib you are referring to, it is commonly managed with a combination of medications and procedures. ...Read more

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Ventricular fibrillation fatal?

Ventricular fibrillation fatal?

Possibly..: In ventricular fibrillation, vfib, the heart is quivering and there is no blood flow so the person is clinically dead. If the heart cannot be restored to a rhythmn where there is blood flow, the patient will then be pronounced dead. Treatment for this rhythmn includes electrically shocking the heart as quickly as possible. Performing CPR in the meantime can be life-saving. ...Read more

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Is there a cure for ventricular fibrillation?

Is there a cure for ventricular fibrillation?

I do not think so: Absolutely not. This is the most dangerous arrhythmia one can have because it can quickly deteriorate to asystole. V-fib is a shockable rhythm and a victim will most likely be pulseless. It must be treated with defibrillation, cpr, epinephrine/vasopressin, amiodarone, Lidocaine and/or magnesium. It's not something you can treat at home with a cup of herbal tea. And anyway, you'd be unconscious. ...Read more

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Is there a P wave in ventricular fibrillation?

Vf: they are masked by extremely rapid electrical storm in the heart, so can't see them in ECG ...Read more

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What causes a person to sweat when they have ventricular fibrillation?

Vfib: Ventricular fibrillation causes the heart to not contract, blood flow to the body ceases and the patient will die if normal or contractile rhythm isn't returned. Sweating is a response to low blood pressure. When blood pressure drops with atrial fibrillation patients may have sweating. Ventricular fibrillation long enough to cause perceived sweating unlikely unless reversed to better rhythm. ...Read more

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Which type of ventricular fibrillation is not dangerous or life-threatening?

Ventricular fib: V-fib is not compatible with life. It is a medical emergency. Atrial fibrillation can be be tolerated for years, but it is a cause of strokes and if you have heart failure, a. Fib. Can make worse. ...Read more

Fibrillation (Definition)

Fibrillation is the rapid, irregular, and unsynchronized contraction of muscle fibers. An important occurrence is with ...Read more


Antiarrhythmic (Definition)

Antiarrythmics treat or prevent the heart from going out ...Read more