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tachycardia
(redirected from Ventricular tachycardia)

   Also found in: Dictionary/thesaurus, Medical, Acronyms, Wikipedia, Hutchinson 0.05 sec.
tachycardia: see arrhythmia arrhythmia (ārĭth`mēə), disturbance in the rate or rhythm of the heartbeat.
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tachycardia

Heart rate over 100 (as high as 240) beats per minute. When it is a normal response to exercise or stress, it is no danger to healthy people, but when it originates elsewhere, it is an arrhythmia. Symptoms include fatigue, faintness, shortness of breath, and feeling the heart thumping. It may subside within minutes or hours with no lasting ill effects, but in serious heart, lung, or circulatory disease it can precede atrial fibrillation or heart attack and demands immediate medical attention. Tachycardias can be treated by an electric shock to the heart, by antiarrhythmic drugs, and by pacemakers.


tachycardia [¦tak·ə¦kärd·ē·ə]
(medicine)
Excessive rapidity of the heart's action.


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A recent ECG Puzzler article ("Nonsustained Ventricular Tachycardia in the Elderly," September 2006: 519-520) contained several discrepencies with the current literature.
The multi-centre prospective, single blind, two-arm randomized OPTION study aims to demonstrate that patients implanted with dual chamber ICDs incorporating advanced features such as optimal dual chamber arrhythmia detection, a pacing mode that minimizes ventricular pacing and a slow ventricular tachycardia zone, have better outcomes in terms of inappropriate shokc delivery, patient mortality and hospitalizations than patients with single chamber devices.
Sudden cardiac arrest (SCA) is a condition caused by life-threatening arrhythmias such as ventricular tachycardia (VT) and ventricular fibrillation (VF).
 
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