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Doctor insights on: Atrial Fibrillation Vs Supraventricular Tachycardia

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Dr. John Garner
1,834 Doctors shared insights

Atrial Fibrillation (Definition)

A heart condition, in which the electrical activity of the heart is abnormal. This abnormal electrical signal causes the heart muscle to contract when it is not supposed to and thus blood is ...Read more


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If I have a history of atrial fibrillation and tachycardia is it bad that my heart rate has been 144 all day?

If I have a history of atrial fibrillation and tachycardia is it bad that my heart rate has been 144 all day?

Yes.: If the heart rate is elevated for prolonged periods of time, there is a risk for tachycardia-induced cardiomyopathy - or weakening of the heart from rapid heart rates. This is usually reversible once the heart rate is corrected. You should see your cardiologist for evaluation. ...Read more

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Grandmother has atrial fibrillation am I at increased risk? I have sinus tachycardia and high blood pressure

Grandmother has atrial fibrillation am I at increased risk? I have sinus tachycardia and high blood pressure

Tough call: You're asking a good question that's hard to answer. 3 million people in the us have atrial fibrillation, and of those, ~30% have at least 1 family member with afib. But because there's so much afib out there, and because the prevalence is so high in advanced age (8% at 80yrs, 16%+ at 90) it's hard to decide what the specific risk due to any given family member is. ...Read more

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I have been to the ER for a rapid heartbeat. Sometimes it's diagnosed as sinus tachycardia and sometimes atrial fibrillation. I have tried cardyzeme and metopral without much success. What happens if I don't seek treatment next time?

I: I agree with dr. Guyton's excellent and thorough answer and would like to emphasize that with atrial fibrillation there are two main issues:
1) heart rate - a fast heart rate is typically what most people present with, and typically can be managed with medications to control heart rate such as the two you described, although there are others. Sustained high heart rates are not good for the heart, but as long as you are not having chest pain, shortness of breath, dizziness, or loss of consciousness then you can call your physician before rushing to the er.
2) stroke - afib presents a very real increase risk of stroke if not properly treated. For this reason, an accurate diagnosis is a must, and if it is indeed afib the you should discuss with your physician whether you are high enough risk to require blood thinners such as Coumadin (warfarin) or pradaxa. This is a long term risk so can be discussed in the outpatient setting with your docotor or a cardiologist. ...Read more

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Can innapropriate sinus tachycardia lead to atrial fibrillation got to go to hospital monday for ECG my heart rhythm gone from normal to abnormal?

Can innapropriate sinus tachycardia lead to atrial fibrillation got to go to hospital monday for ECG my heart rhythm gone from normal to abnormal?

Not usually: This would be a bit odd. Usually fibrillation is the result of age, drinking, and diseases which exhaust or stretch out the atria. Inappropriate sinus tach usually doesn't directly result in afib. When it went to "abnormal" are you sure that was to fib? Did they get an ekg? Could well be flutter too, which can occasionally be mistaken for fib. ...Read more

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Why do you take betapace, xocor, digoxin, and Coumadin (warfarin) with atrial fibrillation and sinus tachycardia?

Why do you take betapace, xocor, digoxin, and Coumadin (warfarin) with atrial fibrillation and sinus tachycardia?

Prevent stroke: Actually atrial fibrillation and sinus tachycardia are two completely different heart rhythms. None of these drugs would be of any use for sinus tachycardia. In atrial fibrillation, Betapace may restore a normal rhythm. Digoxin can help keep the heart rate down. Coumadin (warfarin) reduces the risk of stroke. Zocor also reduces stroke risk in some patients, but this is unrelated to the atrial fib. ...Read more

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How can you distinguish between supraventricular tachycardia and multifocal atrial tachycardia?

How can you distinguish between supraventricular tachycardia and multifocal atrial tachycardia?

Tachycardia: Multifocal atrial tachycardia is a form of SVT. ECG and Holters should help. Sometimes you need electrophysiology study. ...Read more

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What are the differences between supraventricular tachycardia and multifocal atrial tachycardia?

What are the differences between supraventricular tachycardia and multifocal atrial tachycardia?

SVT and MAT: Mat is a kind of svt. Usually mat implies significant cardiac or pulmonary pathology. Svt can happen in less abnormal hearts. ...Read more

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Does atrial fibrillation cause fainting?

Does atrial fibrillation cause fainting?

Afib cause faint?: It is unlikely but I guess possible. The most common cause of faint is "vaso vagel syncope ". This is like after standing a long time, at the sight of blood, etc. ...Read more

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How can food affect atrial fibrillation?

How can food affect atrial fibrillation?

Food can affect meds: Afib is a rythm that can be very fast and can cause a stroke from blod clots going to the brain. Many patients are on Coumadin (warfarin) a blood thinner that works through vitamin k. So if the patient eats green leafy veges and other foods high in vitamin k, it can reverse the Coumadin (warfarin) and make pt suseptable to stroke. Foods and items high in caffiene like coffee chocolate etc can stimulate the heart rate. ...Read more

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Can young adults get atrial fibrillation?

Can young adults get atrial fibrillation?

Yes: I have seen af in 20 year olds. Most likely genetic when it afflicts young people. ...Read more

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Can someone work with atrial fibrillation?

Yes: As long as the heart rate is not to fast and the risk of strike is appropriately dealt with, people work with af. Some people might feel better if they are in normal rhythm. Specific questions regarding rhythm vs. Rate control should be directed to your doctor. ...Read more

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Which exercises are safe with atrial fibrillation?

Which exercises are safe with atrial fibrillation?

All: As long as the heart rate is controlled, there is no contraindication to exercise with atrial fibrillation. ...Read more

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What are the common symptoms of atrial fibrillation?

What are the common symptoms of atrial fibrillation?

Sometimes none: Highly variable: some people are entirely unaware. Others feel their heart beating irregularly or "fluttering" & may notice rapid heart rate. Commonly people notice fatigue and their exercise capacity is mildly reduced. Sedentary people usually don't notice any change. Younger people & folks with their 1st bout tend to be more aware. Frequent bouts and older people are less likely to notice. ...Read more

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In which case we can found a regular atrial fibrillation?

Unclear: I am sorry, but I do not understand what you are asking. Atrial fibrillation is never normal. The rate can be controlled with medicine if it is present all the time. Some people have atrial fib at times but not at others, and sometimes the atrial fib. Can be converted to a normal rhythm with treatment. Please ask your question again, with a clearer question that we may be able to answer better. ...Read more

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How to know what is atrial fibrillation and is it serious?

Atrial fibrillation: Afib is a rapid irregular heart rhythm which can decrease heart efficiency as much as 20% in some patients. It can also be associated with clotting and clots travelling around the body to cause stroke or other problems. Some people have atrial fibrillation as their normal rhythm. Talk to your dr. About it if you have it. ...Read more

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Is atrial fibrillation a serious condition? My friend is 45 and has it.

Not usually: Atrial fibrillation may be a consequence of structural abnormalities of the heart, which can indeed be serious. However, if the rhythm disturbance is the only abnormality then it can usually be controlled sufficiently that the patient can be free of symptoms. In older patients with af there is significant risk of stroke, but this too can be mitigated by treatment to reduce blood clots. ...Read more

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Funny how a diagnosis doesn't mean much till you have it. What is atrial fibrillation?

Funny how a diagnosis doesn't mean much till you have it. What is atrial fibrillation?

Electrical chaos: The electrical impulses in the upper chambers of your heart (mostly originating from the left side) are completely chaotic leading to a quivering motion of these chambers instead of their typical, coordinated pumping function. The lower chambers beat erratically, as the electrical impulses bombard them in a haphazard way. See a cardiologist or an elelctrophysiologist. ...Read more

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What is the difference between atrial fibrillation and nonvalvular atrial fibrillation?

Afib: Afib is the most common heart rhythm disturbance that we treat as cardiologists and can occur in a number of clinical settings and in association with other diseases both cardiac and non-cardiac. Non-valvular atrial fibrillation refers to atrial fibrillation that does not occur in the setting of mitral valve disease such as mitral stenosis or mitral regurgitation. ...Read more

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Can stress cause atrial fibrillation?

Can stress cause atrial fibrillation?

Generally, not: If there is no underlying cardiac problems that may predispose one to atrial fibrillation, it would be unusual for stress to be actual cause; however stress can be the underlying to so many maladies, that one never says never. If one develops atrial fib, must look for underlying heart disease, and--even it none is found-be treated for it by cardiologist specializing in cardiac rhythm disorders. ...Read more

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Will stress cause atrial fibrillation?

Will stress cause atrial fibrillation?

May provoke: Stress alone usually doesn't cause the arrhythmia unless there is some underlying predisposition. Having said that, someone with the predisposition, can have recurrences, especially with acute stress. You should make every effort to manage with stress-reducing techniques. ...Read more

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Can magnesium help atrial fibrillation?

Apparently Not: "they" looked into that years ago. No benefit to high dose mag supplementation, though it did show initial promise. Too bad : (would have been a lot simpler than the measures we use now. ...Read more

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Will hypovolemia cause atrial fibrillation?

It can: The stress of hypovolemia can trigger reflex tachycardia and atrial fibrillation, especially in a diseased heart. ...Read more

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How can alcohol cause atrial fibrillation?

How can alcohol cause atrial fibrillation?

Excess alcohol: Heavy drinking iver time can lead to cardiomyopathy as alcohol works as a myocardial suppressant but even in smaller but usually excessive quantities it can cause atrial fibrillation due to its dehydrating and electrolyte depleting effects. This is often referred to as "holiday heart". ...Read more

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Can atrial fibrillation be life threatening?

Can atrial fibrillation be life threatening?

Indirectly: It can lead to stroke or heart attack of left untreated. ...Read more

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How can tyramine cause atrial fibrillation?

Vasoactive amine: Increased tyramine can cause increases in dopamine, Epinephrine & norepinephrine (particularly when taking a type of drug called an mao-inhibitor). This can result in increased blood pressure, and it can also cause abnormal heart rhythms, including atrial fibrillation. The 1st reported case of atrial fibrillation caused by tyramine was in grimsby, england, in 1987. ...Read more

Fibrillation (Definition)

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


Dr. Warren Foster
401 Doctors shared insights

Supraventricular Tachycardia (Definition)

A condition in which the electric impulses that control the pace of the heart are not ...Read more