What? Causes? Sinus arrhythmia?

Atherosclerosis . The "pacemaker", the sino-atrial node, in the upper chambers of the heart (atria) lose control and other sites fire leading to irregular heartbeat.It is dangerous because it can cause turbulence in the blood flow leading to a clot.Other causes exist such as hyperthyroidism but usually decreased blood flow is the cause.
Sinus node. Extra tissue around the sinus node or other abnormality causes the sinus node to contract abnormally. The sinus node s where the electrical signal for the heart to contract originates.

Related Questions

What are the causes of sinus arrhythmia?

Usually normal. . The commonest type of sinus arrhythmia is related to breathing - also called respirophasic sinus arrhythmia. The hr speeds up during inspiration and slows during breathing out. This is normal, and a sign of good health. Rarely, sinus arrhythmia is seen in the elderly person, but without symptoms, it rarely requires treatment. Read more...

Does sinus arrhythmia cause other serious arrhythmias?

It can. The basic problem is decreased blood flow thru the heart arteries and it is not isolated to the atria, it probably also is effecting the ventricles (the main pump) and may lead to more dangerous dysrhythmias. Read more...
No. Sinus arrhythmia is normal. It reflects the body's regulation of heart rate. It is often very prominent in young individuals. It does not require further evaluation or treatment. Read more...

Might it be possible that a a sinus arrhythmia cause syncopal episodes?

Sinus arrhythmia. Sinus arrhythmia would generally not cause any symptoms let alone syncope. The rhythm implies a normal rate but irregular sinus rhythm. This would have no reason to be associated with syncope. Read more...

Had skipped beats Went to dr. Hooked up to EKG no skipped beats then but dr. Said I have sinus arrhythmia. Does sinus arrhythmia cause skipped beats?

Sinus arrhythmia. This is a misnomer, Sinus Arrhythmia in fact represents a normal finding in healthy young people; it ABSENCE is concerning for illness;it does NOT cause symptoms; skipped beats are just that and need identification. Read more...

If a pac/pvc is caused by sinus arrhythmia breathing out is it benign?

Yes. Whether the very common "sinus arrhythmia" really causes pac's / pvc's is something you'll want to discuss with your physician but if he/she isn't concerned, I'm not either. More than 5 per minute, or in runs, is worrisome. You may try limiting coffee intake, or just getting comfortable with hearts doing flip-flops from time to time. Glad you're taking a proactive approach. Read more...

What is sinus arrhythmia?

Normal. Sinus arrhythmia refers to a prominent, but normal, variation in heart rate. The heart beat begins in the sinus node. The sinus node is regulated by the autonomic nervous system. The system may react quickly enough to cause more noticeable changes in heart rate. This variation is usually more prominent in younger individuals. Read more...
Rate vs breathing . The pacemaker in your heart=sinus node which generates tiny amount of electricity which triggers the heart to contract/beat, average 60-100 BPM at rest. Sinus arrhythmia = sinus node is a bit sensitive to breathigng--inhaling causes it to slow a bit and exhaler speeds up a bit, thus arrhythmia. It is normal variation and commonly seen in young/healhty people. Hope that makes sense. Good luck. Read more...

Is sinus arrhythmia serious disease?

No. Sinus arrhythmia refers to the normal variation that occurs in heart rate with respiration. When we inhale our hr increases and when we exhale it slows down. In some people (particularly in children) this normal variation can be very noticeable. Check with your doctor that your heart rate variation is indeed sinus arrhythmia and not a true abnormality of your heart rhythm. Read more...
No. A sinus rhythm indicates that the conduction system of the heart is working normally. A sinus arrhythmia simply means that the count varies so that instead of beating at 60 beats per minute, for example, it is varying between say 50 and 60 beats per minute. If continuous tracings are done, almost everyone has some sinus arrythmia at some point. There is no association with increased morbidity. Read more...
No. Sinus arrhythmia is a normal variation in the heart rate with the breathing cycle. It is not a disease. It is normal. Read more...