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Definition
1 - When the ventricular premature beats occur on a healthy heart - They are banal in the healthy subject and a fortiori at the high-level sportsman, whose cardiac frequency is low (then, they just translate the “emergence” of an ectopic ventricular focus). They increase during sleep but sometimes, the postprandial period (after the meal) and irritationinduce their discovery. With the same morphology, without any relationship with the effort, even though sometimes laborious, they must not be treated, but they justify the reduction or the stop of tobacco, coffee, tea and alcohol. - When the electrocardiogram achieved by the physician underlines premature beats morphologies different from one another, precocious, multiple, they require the achievement of an echocardiography. The normality of this exam, allied to a disappearance of the exercise premature beat (during an exercise test achieved by a cardiologist) leads to a good prognosis from the physician. A beta-blockers or amiodarone treatment can be used if the symptom is ill felt. The efficiency is judged on the recording of the electrocardiogram on a 24 hours Holter. 2 - When the ventricular premature beats occur whereas the heart is sick, the physicians fear the occurrence of a sudden death
a - The ventricular premature beats due to an illness of the heart arteries (the coronary arteries) Upon decrease of a myocardial infarction, the research of ventricular premature beats by the Holter or their triggering by an exercise test is systematic. During an angina pectoris, the ventricular premature beats are banal but must be analysed by the 24 hours exercise electrocardiogram and the Holter. The beta-blocker treatments are the most interesting. b - The ventricular premature beats occurring during a cardiac failure They are frequent and generally reveal an evolved illness. c - The ventricular premature beats coupled with a heart hypertrophy They also witness the degree of gravity of the heart illness. d - The ventricular premature beats occurring in case of mitral valve prolapse The discussion deals with the
tests triggering the disorders of the ventricle rhythm with the help of a
probe introduced into the heart (electrophysiological exploration) and with
the necessity to resort to a preventive treatment.
File last reviewed on dec 18, 2011 |
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