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Do the ventricles have the same rate as the atria in atrial fibrillation?
Wiki User
∙ 15y ago
No. In atrial fibrillation, the atria have regional depolarizations at a rate of over 300 per minute. Fortunately, the atrioventricular node prevents the ventricular rate from being this high as we would die from lack of cardiac output. There are conditions where the ventricles are depolarized at a rate approximating the atrial depolarization - these include the Lown-Ganong-Levine and Wolff-Parkinson-White syndromes, and consist of abnormal tracts between the atria and ventricles around the AV node.
Wiki User
∙ 15y ago
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What is a Supraventricular event?
A supraventricular tachycardia is tachycardia (heart rate > 100) that originates above the AV node, in the atria. There are several different forms of supraventricular tachycardia, including sinus tachycardia, atrial fibrillation, atrial flutter, atrial tachycardia, multifocal atrial tachycardia, and a nebulous condition called paroxysmal supraventricular tachycardia (PSVT). Many people also consider junctional tachycardia a supraventricular tachycardia.
Which is more dangerous atrial fibrillation or ventricular fibrillation?
Ventricular fibrillation. Basically the patient is dead. Atrial fibrillation causes an irregular heartbeat because the ventricles are receiving disorganized impulses from the SA node. Ventricular fibrillation is where the SA node and the AV node are not firing and the Purkinje fibers are supplying the electrical impulses to the heart. However, the Purkinje fibers are not able to supply enough electricity to contract the ventricles so the heart is twitching but not beating. A heart that is not beating is not circulating blood which means the patient is dead.
What is normal heart rate when you have Atrial Fib?
The goal for patients who have atrial fibrillation are for their heart rates to be normal (60-80).
Should emergency defibrillators be used on patients suffering atrial fibrillation attacks?
If patients with atrial fibrillation experience rapid heart rate (rapid ventricular response) and are hemodynamically unstable (hypotension, altered mental status) then electrical cardioversion is appropriate. Defibrillation is never utilized in atrial fibrillation.
Difference between atrial fibrillation and atrial flutter?
They're he same thing. Atrial flutter is more of a slang term, and is sometimes found in patients with atrial tachycardia. Basically, atrial fibrillation is a disorder, and atrial flutter is a symptom
How best to cure arterial fibrillation developed recently?
Atrial fibrillation can be treated with medication to control the heart rate and thin the blood to reduce the risk of blood clot, heart attack, or stroke. Invasive procedures to treat atrial fibrillation include an ablation or, in extreme cases, the implantation of a pacemaker.
If you have atrial f?
If you have atrial fibrillation that is not well-controlled (i.e. the medication is not working), this can lead to some of the symptoms you describe due to a fast heart rate, which causes the heart to not work efficiently. The symptoms can be due to the atrial fibrillation itself or another underlying heart problem that led to the atrial fibrillation. I would suggest talking with your doctor about your symptoms and to discuss whether additional therapy is necessary for your atrial fibrillation-there are many options to treat this disorder. He or she can also determine if additional testing is warranted.
Can you define and explain Atrial Fibrillation?
When at rest, the healthy heartbeats between 60 and 90 times a minute, with the atria (the two upper chambers of the heart) beating slightly earlier than the ventricles (the two lower chambers of the heart). The rate and timing of contractions (beats) are regulated by electrical impulses generated by the sinoatrial node (a specialized group of cells that produce small amounts of electrical energy).
Why is the heart's pacemaker an important element in the body's function?
SA node is called as pacemaker. SA node beats at the rate of about 70 to 80 beats per minute. The cells from the atria beats at the rate of 50 to 60 beats per minute. Same or some what lower is rate for AV node. The bundle of His ( means of God) beat at still lower rate. The cells from ventricles beat at 30 to 40 beats per minute. So the SA node or pace maker decides the rate of contraction and heart beats in coordinated manner. Other wise you would have landed up in atrial and ventricular fibrillation. You have ineffective heart contraction in fibrillation. You die in no time in ventricular fibrillation, unless you get DC shock.
Which term describes a rapid heart beat that begins with ventricles?
The condition of irregular quivering of the atria and rapid ventricular heartbeat is atrial fibrillation, or a-fib. While serious, a-fib is not immediately life threatening.
What are ventricles doing atrial systole?
During atrial systole, the SA node ( power house for heart to keep on beating) is unable to send signals to ventricles. But heart has some back up power houses which take over, so the ventricles can still keep on beating but at a slower rate than normal during atrial asystole.
Understanding Atrial Fibrillation?
During an atrial fibrillation the atria, which are the upper chambers of the heart, beat irregularly and sometimes too quickly. When this happens, they are not in sync with the ventricles the lower chambers. This can result in an inadequate flow of blood to the body.For some people who suffer from this condition it may occur only on and off. This is known as paroxysmal atrial fibrillation. Others have chronic atrial fibrillation, which means that the heart rhythm is consistently irregular. It is not a life threatening condition but there are some complications that may result from it.Symptoms of Atrial FibrillationSometimes this condition is found during a route physical. Since it often does not present any symptoms, the patient was unaware he or she has it. But some people do have symptoms and these may include:Palpitations A palpitation is a feeling that the heart racing uncomfortably, or beating irregularly. There can even be a flopping feeling in the chest.Weakness and lightheadednessLower blood pressureA sense of confusionChest painShortness of breathCauses of Atrial FibrillationThe right atrium of the heart contains the sinus node, a group of cells that creates the signal that begins each beat of the heart. In a normal heart, this impulse signal goes through the atria and through a passage to the lower chambers of the heart. This action causes the blood to pump into the ventricles and then the ventricles pump blood to the rest of the body.With an atrial fibrillation, these electrical signals become rather chaotic and too many impulses are trying to move into the ventricles. There are a number of possible causes for this, which include:Heart attackHigh blood pressureCongenital heart defectsAn abnormal heart valveViral infectionsSleep apneaLung diseasesIn some people there is no discernable cause. In cases like this, serious complications are very uncommon.Treatments for Atrial FibrillationOne of the most common treatments is to reset the heart's rhythm. This is normally done with drugs or with a brief electrical shock to the heart. After this, medication is used to maintain a normal rhythm.If a normal heart rhythm can't be restored, then the next step is to slow the heart rate down. This is normally done through certain medications or a simple procedure called an AV node ablation.
