However, other arrhythmias can sometimes indicate heart disease.Īn older person with severe arrhythmia may require a pacemaker. Healthcare professionals do not generally consider respiratory sinus arrhythmia a major health concern. Medications such as digoxin, beta-blockers, and calcium channel blockers can make SSS worse. If left untreated, SSS can have serious consequences for a person’s health. Treatment often includes the use of a pacemaker. While SSS may be asymptomatic in some cases, it can also cause a person to experience: tachycardic-bradycardic syndrome, also known as tachy-brady syndrome.There are several arrhythmias associated with SSS: This occurs when the sinus node scars and fibrous tissues replace it over time. Sick sinus syndrome (SSS) is when the sinus node causes abnormalities in the heart rhythm. certain medications and recreational drugs.This can lead to loss of consciousness and death if a person does not receive treatment.Īrrhythmias can affect people of any age, although atrial fibrillation is more common in older people.įactors that increase the risk of arrhythmia include: Ventricular fibrillation: The heart has a disorganized rhythm.Heart block: The heart beats more slowly.Supraventricular tachycardia: The heart rate is abnormally fast when at rest.Atrial fibrillation: The heart beats irregularly as a result of conduction abnormalities. ![]() There are many types of arrhythmia that originate in other electrical pathways of the heart. Symptoms of a third-degree heart block include chest pain, fatigue, and shortness of breath. It can cause heart failure or loss of consciousness. Third-degree heart block can be fatal if a person does not receive treatment. This is when the electrical rhythms of the heart are disrupted or blocked, causing the heart to beat slowly. Ventriculophasic sinus arrhythmia occurs mostly in patients with third-degree heart block, also called an AV block. However, the difference is that NRSA does not affect a person’s breathing.Īlthough it can occur in otherwise healthy individuals, NRSA is more likely to occur in those who have heart disease or who have taken excess digoxin. Nonrespiratory sinus arrhythmia (NRSA) more commonly occurs in adults.Įlectrocardiogram (ECG) results for NRSA can be similar to those for respiratory sinus arrhythmia. In cases of respiratory sinus arrhythmia, the P-P interval will often be longer than 0.12 seconds when the person breathes out.Īs the heart speeds up, such as during exercise, the heart rate rhythm tends to become more regular. In most people, there is a slight variation of less than 0.16 seconds. The time between heartbeats is the P-P interval. It is more common in children than in adults and tends to disappear as children get older. In other words, when the person breathes in, their heart rate increases, and when they breathe out, the rate decreases. It occurs when a person’s heart rate relates to their breathing cycle. Respiratory sinus arrhythmia is not harmful. This section looks at the different types of sinus arrhythmia.
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