Error: This is required. Error: Not a valid value. Tachycardia means that your heart is beating much faster than normal, usually more than beats per minute.
Back to Health A to Z. Supraventricular tachycardia SVT is a condition where your heart suddenly beats much faster than normal. It's not usually serious, but some people may need treatment.
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Inappropriate sinus tachycardia IST is a syndrome characterized by a sinus tachycardia not related to a medical condition, to a physiological response, or to medication or drugs and associated with symptoms, often invalidating and altering the quality of life of affected patients. It occurs predominantly in adolescents and young adults, and in the female sex. The diagnosis requires a complete work-up in order to exclude other causes of sinus tachycardia and one or several additional tests: h ECG ambulatory recordings, echocardiogram, exercise testing, and autonomous nervous system assessment.
Inappropriate sinus tachycardia IST is a condition in which a person's heart rate, at rest and during exertion, is abnormally elevated for no apparent reason. People with IST often have resting heart rates greater than beats per minute, and with even minimal exertion the heart rate often rises to very high levels. The average IST sufferer is a woman in her 20s or early 30s who has been having symptoms for months to years.
Supraventricular tachycardia SVT is a heart condition featuring episodes of an abnormally fast heart rate. Episodes can last for seconds, minutes, hours or in rare cases days. When the heart beats normally, its muscular walls contract tighten and squeeze to force blood out and around the body.
Both her pediatrician and a specialist have told us that her tachycardia is not dangerous. However, when I hear reports of young people dying of heart arrhythmias, I become frightened all over again. How can I reassure myself that this is not dangerous?
Sinus tachycardia refers to a faster-than-usual heart rhythm. Your heart has a natural pacemaker called the sinus node, which generates electrical impulses that move through your heart muscle and cause it to contract, or beat. Normal sinus rhythm typically results in a heart rate of 60 to beats per minute.
Tachycardiaalso called tachyarrhythmiais a heart rate that exceeds the normal resting rate. The upper threshold of a normal human resting heart rate is based on age. Cutoff values for tachycardia in different age groups are fairly well standardized; typical cutoffs are listed below: .
Generally speaking, for adults, a heart rate of more than beats per minute BPM is considered too fast. View an animation of tachycardia. Atrial or supraventricular tachycardia SVT is a fast heart rate that starts in the upper chambers of the heart. The disruption results in a faster than normal heart rate.