Microalbuminuria and cardiovascular events in elderly hypertensive patients without previous cardiovascular complications.
To assist in the development of better treatments for elderly hypertensive patients, we studied the degree to which the baseline values of urinary albumin excretion (UAE) and other cardiovascular risk factors were predictive of cardiovascular complications in a cohort of elderly hypertensive patients. In 1994, we adopted 144 elderly hypertensive patients, who had been treated for more than 6 years at various clinics and more than 1 year at the National Cardiovascular Center, Osaka, Japan. They were divided into 2 groups: a NA group (n=111) with normoalbuminuria (UAE<30mg/day) and an MA group (n=33) with microalbuminuria (UAE 30-300 mg/day). At baseline, the two groups were similar with respect to systolic and diastolic blood pressure (SBP/DBP), pulse pressure (PP), age, ratio of males to females, serum creatinine, uric acid, total cholesterol, fasting plasma glucose (FPG), and creatinine clearance (CCr). PP was calculated as SBP minus DBP. The efficacy of blood pressure (BP) control was similar in both groups during the 8-year follow up period; however, a total of 14 cardiovascular events occurred in the MA (6/33) and NA (8/111) groups, with the MA group showing the higher incidence rate by multiple logistic regression analysis (p<0.05). At 8 years of follow-up, PP and age were correlated with UAE (p<0.05, p<0.001). At the same time point, CCr was correlated with UAE at baseline (p<0.05). The results indicated that, in elderly hypertensive patients without previous cardiovascular complications, microalbuminuria can be a predictor of cardiovascular events irrespective of conventional BP control.
Division of Hypertension and Nephrology, Department of Medicine, National Cardiovascular Center, Osaka, Japan. snakamur@hsp.ncvc.go.jp
Satoko
S
Nakamura
Yuhei
Y
Kawano
Takashi
T
Inenaga
Hajime
H
Nakahama
Takeshi
T
Horio
Osamu
O
Sasaki
Naoki
N
Okuda
Shuichi
S
Takishita
D000368:Aged; D000419:Albuminuria / Q000453:epidemiology*; D000959:Antihypertensive Agents / Q000627:therapeutic use; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D006977:Hypertension, Renal / Q000188:drug therapy / Q000453:epidemiology*; D015994:Incidence; D007676:Kidney Failure, Chronic / Q000453:epidemiology; D008297:Male; D009203:Myocardial Infarction / Q000453:epidemiology*; D012307:Risk Factors; D020521:Stroke / Q000453:epidemiology*
D000959:Antihypertensive Agents