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  • Title: Ventricular arrhythmias in hypertensive patients with mild metabolic alterations.
    Author: Sorrentino F, Busà A, Averna M, Nigro P.
    Journal: Minerva Cardioangiol; 2003 Feb; 51(1):63-7, 68-70. PubMed ID: 12652262.
    Abstract:
    BACKGROUND: Ventricular arrhythmias (VA) are prevalent in hypertensives, as well as in diabetics and dyslipidemics. The aim of our study is to evaluate if alterations in glucose or lipid metabolism increase the risk of VA in hypertensive patients. METHODS: Sixty-eight patients (24 males, 44 females, aged 45-78), with mild-moderate hypertension, were divided into 2 groups: group A (n=24) normoglycemic and normolipemic, and group B (n=44) with serum cholesterol >220 mg% and/or triglycerides >165 mg% and/or glucose >110 mg%. Patients with clinical or ECG signs of ischemia or kaliemia <3.5 mEq/l, were not admitted to the study. After a 15-days pharmacological wash-out, 24-hour Holter ECG and echocardiography were performed on all patients. RESULTS: Ventricular ectopic beats (VEB) were found in 66% of group A and 100% of group B (difference =34%, 95% C.I. =18-50%). VEB were less severe in group A (Lown's class 1-2), while group B had VEB ranging from class 1 to 5. Left ventricular hypertrophy (LVH) was found in 33% of group A and in 72.7% of group B, and was not closely correlated to VA. Group B patients with LVH had more severe VA (4 A, 4 B and 5 Lown's class). CONCLUSIONS: Hyperglycemia and/or dyslipidemia, even mild, seem to increase the risk of VA in the hypertensive patient with or without LVH. It suggests that 24 hour Holter ECG may be useful to select, among patients with metabolic alterations, those at high risk for VA.
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