Arterial hypertension and cardiac arrhythmias.
PURPOSE AND DATA IDENTIFICATION: One of the main clinical problems of patients with arterial hypertension is the presence of arrhythmias, especially if left ventricular hypertrophy exists. Recent results from our group and all data available via Med-Line-search have been analysed. The analysis was focused on atrial and ventricular arrhythmias and arrhythmic risk prediction, using non-invasive markers. RESULTS OF ANALYSIS AND CONCLUSION: Arterial hypertension is a major cause of non-rheumatic atrial fibrillation and other supraventricular arrhythmias. The prevalence of ventricular arrhythmias is increased in hypertensive patients without left ventricular hypertrophy, compared to normotensives. If left ventricular hypertrophy is present, the risk for ventricular tachycardias is quadrupled. The presence of left ventricular hypertrophy is associated with an increase in all-cause mortality by a factor of seven in men and nine in women. In particular, patients with hypertrophy, increased rate of ventricular extrasystoles up to non-sustained ventricular tachycardia and ST-depression in long-term ECG are threatened by sudden cardiac death. At present, it is not possible to safely identify patients with increased risk. Regression of hypertrophy exists along with a decreased rate of ventricular extrasystoles. We hypothesize that by the regression of hypertrophy, the prevalence of sustained ventricular tachycardia decreases and therefore the prognosis of those patients can be improved, although controlled studies are not yet available.
Hennersdorf
M G
MG
Department of Cardiology, Pneumology and Angiology, Medical Clinic and Policlinic B, Heinrich-Heine-University, Duesseldorf, Germany. hennersdorf@med.uni-duesseldorf.de
Strauer
B E
BE
D000818:Animals; D001145:Arrhythmias, Cardiac / Q000209:etiology* / Q000628:therapy; D004562:Electrocardiography; D006801:Humans; D006973:Hypertension / Q000150:complications*; D017379:Hypertrophy, Left Ventricular / Q000209:etiology / Q000628:therapy; D013564:Sympathetic Nervous System / Q000502:physiology; D014630:Vagus Nerve / Q000502:physiology