What is sinus arrythmia?

Question

the medical encyclopedia said that it is an irregular heartbeat but why with the word "sinus"

Answer 1

NSR is normal sinus rhythm...the SA node (the sinoatrial node) or sinus node.....old archaic nomenclature...the SA node is what initiates the electrical impulse that triggers the atria to contract (via the interatrial pathway), then electrical stimulus goes to the AV node (atrioventricular node, via the internodal pathway) and stimulates that to begin the ventricles to fire, but the electrical impulse travels down the bundles of HIS (pronounced hiss) and futher to the purkinge system wqhich stimulates the ventricles to contract. The two ventricles are much larger then the atria, so they require the right and left bundles of his and their own sets of purkinge fibres.
i hope that id did not confuse you with the anatomy...
now to your question....the timer in the SA node may be off a little and does not beat with a regularity...x x x x x x x x, but may beat like this: x x x x x x x x x x x x x x x x x x ...this can be a normal configuration and no harm can come from it unless it becomes atrial fibrillation or atrial flutter (where the atria now beats 150-300 times a minute and the ventricles can't depolarize and repolarize that fast. Then there are problems like clotting, congestive heart failure, loss of atrial kick....
sorry, i got off on a tangent...
good luck

Answer 2

A Respiratory Sinus Arrhythmia is a change in the heart rate that corresponds to the frequency
of respiration.

Typically the heart rate will increase during inspiration due to stimulation of the sympathetic
nervous system during this time, and the heart rate will decrease during expiration due to
stimulation of the parasympathetic nervous system. The rhythmic change in heart rate can be
attributed to varying levels of the neurotransmitters acetocholine (sympathetic) and norepinephrine
(parasympathetic) at nerve endings. However, parasympathetic activity influences heart rate by RSA
much more so than sympathetic activity.

Respiratory Cardiac Arrythmia is influenced by two factors. A reflexive factor, which consists of
arteriole response to sympathetic stimulation alters arterial blood pressure; baroreceptors and
stretch receptors in the lungs alter the heart rate accordingly in a feedback manner. Also, the
Bainbridge Reflex plays a major role in the alteration of heart rate as a result of respiration.

The second factor that controls the heart rate with respect to respiration is the central nervous
system, which connects the heart and lungs through the cardiac/vagal center of the medulla. This has
been demonstrated experimentally. It is known that Respiratory Sinus Arrythmia is the result of both
reflexes in which the heart responds to the respiratory cycle and control from the central nervous
system.

Answer 3

There is a Sinus Node (located in the heart) that stimulates your heart to beat.


Assuming you are referring to Cardiac Sinus Arrythmia.

Answer 4

ive got sinus arrythmia. it is just a rhythm that corresponds to respiration. it is a normal variant in young people and can occur nocturnally. it is called sinus as it originates from the sinus node which is the hearts natural pacemaker (makes the heart beat normally)

Answer 5

a sinus is anything i cavity in the body. Most people think they just have to do with the head but basically any thing on the inside that is hollow and can fill with fluid can be a sinus. In this case it is the coronary sinus.

Answer 6

i'm no known practitioner missy, yet i'm a ECG visual demonstrate unit tech, I examine ECG outcomes, and Sinus Arrythmia is regularly occurring. that's likely linked with respirations, fantastically marked in little ones. it is the irregularity (skipped beat) of the coronary heart, the position maximum persons does it. SO not some thing worry in any respect.

Answer 7

The heart has a part called sinus.

The "sinus" refers to the natural pacemaker of the heart which is called the sinoatrial (or sinus) node.

Answer 8

The technical term is Respiratory Sinus Arrhythmia (RSA)

The rhythm of the heart is primarily under the control of the vagus nerve, which inhibits heart rate and the force of contraction. When we inhale, the vagus nerve activity is impeded and heart rate begins to increase. When we exhale this pattern is reversed. The degree of fluctuation in heart rate is also controlled significantly by regular impulses from the baroreceptors (pressure sensors) in the aorta and carotid arteries. When RSA is enhanced through biofeedback, the goal is usually to reinforce the natural feedback activity of the baroreceptors through our breathing pattern.

Answer 9

Simply put...on the EKG strip. The atrial rhythm is regular, while the ventricle rhythm is not regular, but irregular. The ration is also 1:1...one atrial to one ventricle.