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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
572 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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What are the drugs used to treat cardiac arrhythmia?

What are the drugs used to treat cardiac arrhythmia?

It depends!: There are many - but the choice depends on the specific rhythm disorder being treated. Many have side effects, and doctors are using these drugs less than they did in the past. The choice of which drug, if any, to use depends on how troublesome the arrhthmia is, and whether an ablation procedure is available that may eliminate the need for drugs. ...Read more

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Which drugs for psvt are safe for someone with ventricular arrhythmias?

Which drugs for psvt are safe for someone with ventricular arrhythmias?

Pharmacotherapy: Drug therapy of arrhythmias is individualized and there is a lot of overlap of medications used for atrial and ventricular arrhythmias. When the heart function is otherwise normal, drug therapy is 'safer' than in patients with abnormal ventricular function. Having said that we often have to treat arrhythmias in patients with abnormal ventricular function. Discuss with your doctor for your specific ...Read more

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What 3-5 drugs are commonly given for atrial fibrillation?

What 3-5 drugs are commonly given for atrial fibrillation?

Lots of choices: If the goal is just to control the heart rate, the common choices are drugs that slow the heart rate like a beta blocker or calcium channel blocker and a blood thinner to lower the risk of stroke. Classically coumadin, (warfarin) but there are newer ones ( xarelto, for example). Sometimes there are drugs given after the heart has been restored to a normal rhythm that help maintain this, such as amiodarone. ...Read more

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Why are thrombolytic drugs appropriate for treating heart attacks?

Why are thrombolytic drugs appropriate for treating heart attacks?

Some heart attacks: are caused by a clot (also known as a thrombus) that blocks the flow of blood to heart, causing a heart attack. Thrombolytics are designed to break up these clots. While there are risks to using these (or any) medications, studies have shown that in some situations, for some patients, the benefit of thrombolytics can outweigh the risks. ...Read more

Dr. Rick Koch Dr. Koch
5 doctors agreed:
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What medicine can be used to cure sinus arrhythmia with 2nd degree heart block.?

Dr. Rick Koch Dr. Koch
5 doctors agreed:

None really: Sinus arrhythmia is a benign condition seen in younger patients that causes variation in heart rate related to increased vagal tone. 2nd degree heart block can be of the benign variety (mobitz 1) or more serious (cant tell without seeing your ekg). Talk to your physician. Medicines do not cure these things. ...Read more

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Could sodium channel blockers help w/ angina and vasoconstriction? I Read about Ranolazine, sounds promising for angina, any experience? Vasodilation?

Could sodium channel blockers help w/ angina and vasoconstriction? I Read about Ranolazine, sounds promising for angina, any experience? Vasodilation?

Sure: ranolazine can definitely help with chronic nonrevasularizable angina but there are many more med options before that. And at age 35 it's not something that would be used on you really. ...Read more

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How does a phycisian decide which anti-arrhythmic drug is best for patients abnormal heart rhythm?

How does a phycisian decide which anti-arrhythmic drug is best for patients abnormal heart rhythm?

Depends: Depends on the rhythm being treated, the underlying condition of the heart, and co-morbid conditions like kidney or liver disease. ...Read more

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Which drugs are mostly recomended to start therapy for patients with atrial fibrillation. Is quinidine a good chioce?

Which drugs are mostly recomended to start therapy for patients with atrial fibrillation. Is quinidine a good chioce?

Atrial fibrillation: Quinidine is only rarely used any more. We older doctors learned years ago that we killed some folks with it. There are more recent and safer drugs that we use now. Talk to your doctor to discuss if you have afib, a cloud doctor shouldn't be advising you without knowing your situation. ...Read more

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What combination antihypertensive drugs to use to achieve target Bp in patient with ckd(no ptn Uria )and paroxysmal a fib ?

What combination antihypertensive drugs to use to achieve target Bp in patient with ckd(no ptn Uria )and paroxysmal a fib ?

Multi drug regime: Calcium channel blockers Beta blockers aprosoline with nitrates ACE/ARB combinations are good combinations meds ...Read more

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How does isosorbide dinitrate and hydralazine work in treating congestive heart failure?

How does isosorbide dinitrate and hydralazine work in treating congestive heart failure?

A-HEFT Trial: A large trial looked at the combination of hydralazien and Isordil (isosorbide dinitrate) with african american patients and showed a benefit of improving heart failure status, on top of standard medical therapy. It is thought to be believed due to lack of Nitric Oxide delivery to endothelium in african americans, that is improved by this therapy. Blood pressure tends to be higher in the first place, which improves. ...Read more

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Can beta blockers such as propranolol or toprol (metoprolol) help prevent ventricular fibrillation in susceptible individuals?

Can beta blockers such as propranolol or toprol (metoprolol) help prevent ventricular fibrillation in susceptible individuals?

Beta Blockers: Yes. Beta blockers are antiarrythmic medications as well as an anti-hypertensive medication. It counteracts the effects of catacholamines like Epinephrine which can cause tachycardia, hypertension and in susceptible individuals ventricular fibrillation. ...Read more

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Can beta blockers cause atrial fibrillation instead of preventing it? Help please?

Can beta blockers cause atrial fibrillation instead of preventing it? Help please?

BB don't cause afib: not generally; i guess if you blocked the sinus rhythm so slow (20s or so) then you could end up with afib as an escape rhythm. generally at usually utilized dosing of beta blockers - they will decrease the tendancy for afib, not increase it. ...Read more

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Are beta blockers used in critical care to treat hearts?

Are beta blockers used in critical care to treat hearts?

Absolutely: Beta blockers are frequently used in the ICU for management of various conditions related to the heart and sometimes for blood pressure control. In the icu, the patient may sometimes benefit from intravenous beta blockers that can be specifically titrated on a real time basis, with less fear about erratic absorption from the gut. ...Read more

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Beside taking arrhythmia medicines, what are other option for atrial fibrillation? Does a pace maker or defibrillator cure a fib?

Beside taking arrhythmia medicines, what are other option for atrial fibrillation?  Does a pace maker or defibrillator cure a fib?

Ablation: Catheter ablation (pulmonary vein isolation) can be curative. Although not curative, an av node ablation in combination with a pacemaker or defibrillator can usually eliminate the symptoms of atrial fibrillation. If you have obstructive sleep apnea using CPAP can greatly improve atrial fibrillation. ...Read more

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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