Definition and causes
Paroxystisk supraventricular tachycardiathe episode show seizures of unnaturally fast (racing) heartbeat, caused by a disturbance in the upper part of the heart pipeline system (see cardiac rhythm management). Heart rate during an attack typically range between 140-180 beats per minute, without this resulting from physical activity. Normally finds heartstrings of adults 60-90 times per minute during rest, but the pulse can easily increase to 140-180 beats per minute during physical exertion.
Regular attacks by racing heartbeat or heart of healthy people most often caused by a harmless disturbance in the heart pipeline system. In a relatively common phenomenon, most frequently seen in young people. In the elderly, it is because forkammerflimmer or sick sinus syndrome. In rare instances it caused a more serious congenital heart defect in the electrical conductivity system (calledWolff-Parkinson-White syndrome), Where heart rate episode shown smoking at 150-250 beats per minute. The congenital defect is found frequently in childhood or early youth.
Symptoms of racing heartbeat
The symptoms often develop suddenly and typically total between a few seconds and up to several hours. Symptoms may include:
- Shortness of breath.
- Weight sensation or chest tightness.
Diagnosis and precautions
The diagnosis made in the light of the above symptoms. It can also record an electrocardiogram (ECG), which monitored heart rate over a longer period (eg. 24 hours), then Seizures only occasionally.
If you only have occasional, short burst of racing heartbeat, you can even try to overcome an attack by stimulating the heart wire system with some simple techniques. You can use the so-called Valsalva maneuver, which with the diaphragm presses against a closed throat (as when you are sitting on the toilet and "pressing"). Icy water on the face can sometimes help. Your doctor can explain to you with these techniques.
Treatment of racing heartbeat
For more frequent and symptomatic cases of racing heartbeat, use medical treatment, which regulates heart rhythm.
In the case of forkammerflimmer can also use an electric shock, which may force the runaway heartbeat back to normal. This is called DC converter (DC = direct current) and is under full anesthesia.