In this article, we look at what a sinus arrhythmia is, how it is diagnosed, and if it is a health concern.
Laser Lead Extraction Duke is a leader in providing laser lead extraction. Arrhythmias can be caused by congenital heart disease CHD , abnormal heart valve function, and heart failure. This is because a child's heart is still growing and developing and changes to the heart can lead to respiratory sinus arrhythmia. Your heartbeat may be irregular. Because episodes of SVT tend to be unpredictable, trying to record the rhythm during the episode is not an easy exercise. Latest news Alzheimer's: Cell mechanism removes defective protein.
Although different types of sinus arrhythmia will be covered, this article will focus on respiratory sinus arrhythmia. Sinus arrhythmia does not relate to the sinus cavities in the face but to the sinoatrial or sinus node in the heart. The sinoatrial or sinus node is located in the upper chamber on the right side of the heart, which is called the right atrium.
The sinus node is known as the heart's natural "pacemaker," meaning it is responsible for the rhythm of a person's heartbeats. Sinus arrhythmia means there is an irregularity in the heart rhythm, originating at the sinus node. Respiratory sinus arrhythmia is effectively benign, meaning that it is not harmful. It occurs when a person's heart rate relates to their breathing cycle. In other words, when the person breathes in, their heart rate increases, and when they breathe out, the rate decreases.
Respiratory sinus arrhythmia is more common in children than adults and tends to disappear, as they get older. The time between each heartbeat is known as the P-P interval.
In most people, there is a slight variation of less than 0. In cases of respiratory sinus arrhythmia, the P-P interval will often be longer than 0. As the heart speeds up, during exercise, for example, the heart rate rhythm tends to become more regular. The most common way to diagnose arrhythmia is by taking an electrical recording of the heart rhythm, using a machine called an electrocardiogram ECG or EKG.
An ECG or EKG measures several different aspects of the heart, including the rate, rhythm, and intervals between beats. In cases of respiratory sinus arrhythmia, the heart rate per minute is usually normal. However, the time between each beat may vary, indicating an arrhythmia. Often there is a variation of more than 0.
This will give the doctor the clearest sign that the person has sinus arrhythmia. Sinus arrhythmias are common in children and are sometimes found in adults as well. Children who have respiratory sinus arrhythmia will tend to see their symptoms decrease, as they get older without the need for treatment. While the exact cause of respiratory sinus arrhythmia is not known, researchers believe it may occur to increase efficiency or allow the heart to do less work while maintaining the correct levels of blood gases.
There are many types of arrhythmia that originate in other electrical pathways of the heart. The main types include:.
Arrhythmias can affect people of any age, although atrial fibrillation is more common in older people. Sick sinus syndrome SSS is when the sinus node causes abnormalities in the heart rhythm. This occurs when the sinus node scars and is replaced by fibrous tissues over time. SSS more commonly affects older people and both sexes equally.
While SSS may be asymptomatic in some cases, it can also cause a person to experience:. Treatment often includes the use of a pacemaker. If left untreated, SSS can have serious consequences for a person's health.
Medications, such as digoxin, beta-blockers , and calcium channel blocker can make SSS worse. Respiratory sinus arrhythmia is not considered a major health concern. It may be a heart rate that is too fast, too slow or irregular. An arrhythmia may not cause any symptoms. Or an arrhythmia may cause moderate to very serious symptoms.
An arrhythmia may not need treatment. If treatment is given, your child may need medicine, radiofrequency ablation, a device or surgery. When should I call my child's health care provider? These include: Feeling weak or tired Having heart palpitations Feeling dizzy Fainting syncope Not feeding or eating well. The cause of an arrhythmia may be unknown. Some known causes in children include: Heart problem that is present at birth congenital Heart problem that is inherited Infection Abnormal levels of certain chemicals in the blood Normal reaction to exercise, fever or emotions Changes in the structure of the heart Electrical conduction abnormality.
First, an electrical stimulus is generated in a specialized part of the heart muscle called the sinus node also called the sinoatrial node, or SA node. This is a small mass of specialized tissue located in the right atrium right upper chamber of the heart. The sinus node generates a regular electrical stimulus, 60 to times per minute, depending on the age of the child and his or her activity level. The electrical impulse travels from the sinus node to the atrioventricular node also called AV node located between the atria and the ventricles.
In the AV node, the impulses are slowed down for a very short period, allowing the atria to contract a fraction of a second before the ventricles. The blood from the atria empties into the ventricle. The electrical current then continues down the conduction pathway via the Bundle of His and into the ventricles. The Bundle of His divides into right and left pathways to provide electrical stimulation to the right and left ventricles.
lawntiltisofbard.tk The ventricles then contract and pump out blood to the body. An arrhythmia abnormal heartbeat may occur when: The heart's natural pacemaker the sinus node develops an abnormal rate or rhythm. The normal conduction pathway is interrupted. Another part of the heart takes over as pacemaker. Children's Team Departments.
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