They may occur even in young, otherwise healthy people with normal heart function. This type of syncopy is often related to problems with the autonomic nervous system (ANS), which controls functions such as heart rate and blood pressure. There are a variety of causes not necessarily related to the heart. Non-cardiovascular syncope - The most common type (also called vasovagal type). There are two types of syncope (fainting) to watch out for:Ĭardiovascular syncope - The most dangerous but rare type of fainting is caused by an abnormal heart rhythm (arrhythmia) or by structural damage to the heart. In some cases, fainting is the only warning sign of an abnormal heart rhythm (arrhythmia) that could lead to sudden cardiac arrest and death. The most serious causes of syncope are related to heart damage or abnormal electrical system disorders that affect the heart's ability to pump blood efficiently. However, some are life threatening, especially fainting during exertion. Many causes of syncope, however, are not easy to explain and are not serious. Profound blood loss or fluid loss (severe diarrhea or vomiting) may also cause syncope. It may be explained by factors such as stress, grief, overheating, dehydration, painful stimuli, exhaustion, or illness.
Fainting is common and a single spell usually is not serious. Typically, a fainting spell lasts only a few seconds or minutes, and then the person regains consciousness. It most often happens when the blood pressure is too low (hypotension) and the heart does not pump enough oxygen to the brain. Fainting (syncope) is a sudden transient loss of consciousness.
0 kommentar(er)
