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OF REPOIARIZ4TION ABNORMALITIESIN HYPERTENS1ON. Boyiadzis,E Guzman,A Hernandez,A Armari,and R Cohen, Division of Cardiology, Department of Medicine, Woodhull Medical & Mental Health Center,Brooklyn, NY. Depolarizationabnormalities,a prolonged QTc (PQTc)and a prolongedQTc dispersion (PQTcD) , occur in hypertension(HTN), but their possible relationshipto the severityof arterialpressure n (AP) has not been described in detail, a bas obeen made witbmnormotensive(NT) c p controls. Thus the electrocardiogram(ECG) was examined in 79 consecutivept% (group 1) with untreatedHTN and in 66 NT controls (groupII) Age and sex distributionwas similar in botb groups. The average QTc was 430 * 5 maec in group 1 ve 395 * 2 msec in group (unpairedt test, P
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Age, As, WIH Age, &, Bhfl n SBPnunffg SSfPmmHg MEN E 233 132.1(1.4) 131,6(1.4) SA 2S4 134.8(1.3) 133.2(1.3) Af 20S 136,8(1.3) ● 135.5(1.3) ● WOMEN E 291 128,7(1,2) 128.5(1.2) 130.1(1.2) SA 251 131.4(1.2) 135,s (1.0) ● Af 341 134.7(1.0)* SP increasedwifh increasingSMI and W ratio in bth men and wonwn ‘wifhin’ each ethnic group. Multipleregressionmcfftckrm (adjustedfor age, therapy and ethnic group) in men were 0.82(0.18)mmHgSBP@*m’(P-=0.WOI) for BM1and 5.9fl.2) mmHgSBP/O.lunit (P.O.OCOI)for W w significantinteraction y in C (0.95 with BM1and cfhnicify(P4.04) suggesfsfhat the effect is steep-w [0. IO]; in SA (0,60[0.23]; p-O.009) and in Af(O.25[0.19];p-O.19).SimiluI p
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