搜尋結果
- 越位
- ㄩㄝˋ ㄨㄟˋ
- 釋義：
- 足球運動用語。足球運動中當球員踢球時，其同隊另一球員，位於對方半場且比對方兩個球員及球更近於對方端線，即稱為「越位」。
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WebMD is a trusted source of health and medical information, with expert reviews, community support, and educational services. Find a doctor near you or browse health news.
- Overview
- Ectopic Beat
- Electrical Signals & Chambers
- Types of Beats
- Symptoms & Triggers
- Diagnosis
- Treatment
This article is about ectopic beats, which are heartbeats that occur in an odd place or position. It explains the causes and symptoms of ectopic beats, how they can be diagnosed by a doctor, and what treatments may be available for them.
An ectopic heartbeat is a harmless condition that occurs when something goes wrong with the heart's electrical system. It is more common in older people.
The heart contains four main sections, called chambers, and electrical signals control your heartbeat which normally come from an area of cells known as the sinus node in the upper right atrium. In some cases, electrical signals can also come from outside of the sinus node causing either atria or ventricles to squeeze too soon resulting in an ectop...
There are two main types of ectopic beats; premature atrial contractions (PACs) occur in upper chambers and premature ventricular contractions (PVCs) occur in lower chambers with PACs being more common than PVCs.
If you have ectopic beats, you may not notice any symptoms but if you do they include sensations such as fluttering or pounding chest sensations; triggers for ectopics include high blood pressure, lung disease, alcohol misuse etcetera .
If your heart seems to miss regularly tell your doctor who may diagnose by listening to your heart or give tests like electrocardiogram (EKG), Holter monitor etcetera .
Avoiding things that trigger it helps otherwise medication like beta-blockers or radiofrequency catheter ablation procedure may be suggested by doctor .
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