Sinus arrhythmia is a kind of arrhythmia (abnormal heart rhythm). For the most common type of sinus arrhythmia, the time between heartbeats can be slightly shorter or longer depending on whether you’re breathing in or out. Your heart rate increases when you breathe in and slows down when you breathe out. This kind of arrhythmia is considered ...

2022年4月30日 · Sick sinus syndrome is a type of heart rhythm disorder. It affects the heart's natural pacemaker (sinus node), which controls the heartbeat. Sick sinus syndrome causes slow heartbeats, pauses (long periods between heartbeats) or irregular heartbeats (arrhythmias).

2023年10月31日 · Normal sinus rhythm is defined as the rhythm of a healthy heart. It means the electrical pulse from your sinus node is being properly transmitted throughout the heart muscle. In adults,...

2024年1月14日 · What Is a Normal Sinus Rhythm? Normal sinus rhythm is when your heart beats in a regular, organized way. Your body has a built-in pacemaker called the sinoatrial (SA) node, or sinus node....

2024年6月7日 · What Is a Normal Sinus Rhythm? Normal sinus rhythm (NSR) is another name for a normal heart rhythm. The heartbeat is controlled by electrical signals that are transmitted to the four chambers of the heart, causing them to contract and relax in sequence to …

Normal heart rate (classically 60 to 100 beats per minute for an adult). The sinus node should pace the heart – therefore, P waves must be round, all the same shape, and present before every QRS complex in a ratio of 1:1. Normal PR interval, QRS complex and QT interval. QRS complex positive in leads I, II, aVF and V3–V6, and negative in lead aVR.

2024年5月9日 · Sinus arrhythmia is a variation in the heart's sinus rhythm, usually caused by changes in a person's breathing cycle. It's a common finding, especially in children and young adults, and its presence often declines with age. Less commonly, sinus arrhythmia may indicate an underlying medical problem, like heart disease or heart block.

2019年3月29日 · Sinus arrhythmia is when your heart beats too slowly or too fast. The change of pace may happen when you breathe. This condition is common and usually benign. But, it could...

2025年3月20日 · On an Electrocardiogram (ECG), the normal sinus rhythm (NSR) appears as a consistent and orderly pattern, indicating healthy heart function. NSR, also known as the heartbeat, is driven by electrical signals from the Sinus Node. These signals travel through the heart’s valves and cause contraction and expansion to facilitate blood flow.

2023年8月10日 · Sick sinus syndrome is an umbrella term that covers three heart rhythm problems (arrhythmias): sinus bradycardia, which causes a slow heart rate; tachycardias, which cause fast heart rates, often followed by a very slow heart rate. Types of tachycardias include atrial fibrillation, atrial flutter/tachycardia, and supraventricular tachycardia