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PREDICTION OF LEFF VENTRICULAR MASS (LVM) IN THE ELDERLY BY CASUAL MEASUREMENT AND AMBULATORY BLOOD PRESSURE MONITORING (ABPM). Ruiz-Nodar J.M ~ce-GakSn C. Agutlar R. Martinez-Elbal L. MeodezGarcia J. Pizarro A. Fermindez M. Gabriel R. Su,$rez C*. Hospital de la Princesa. Madrid. Spain. EPICARDIAN group. Ambulatory blood pressure monitoring (ABPM) in adult population seems to be associated to organ damage involvement better than casual blood pressure (BP) measurement. However it is unknown which BP measurement is the best predictor of left ventricular hypertrophy (LVH) in the elderly. The aim of the study was to compare the contribution of casual BP, at home and at hospital, and ABPM in predicting the hypertension cardiac effects in the elderly population (>_65 years). 271 patients randomly selected, were prospectively studied making an echocardiogram and office BP measurements made by doctors and home BP made by a nurse and ABPM (Spacelabs 90207). Mean age 74 ~: 6 (65-93), 55.4% women; 35% were excluded because of bad quality of the echocardiogram Or if the number of correct measurements of ABPM were less than 80%. Left ventricular mass (LVM) was calculated by Devereaux method. Logistic regression was performed trying lo find predictors of LVM including systolic and diastolic BP at the hospital (SBPH, DBPH) and ABPM pressures. Confounding factors such as age, sex, antihypertensive treatment, cardiovascular risk factors and antropometric variables (height, weigh, body mass index) were included. An ecuation that predicted 48% of LVH (r=0.69) was obtained. The ecuation variables were (1~ coefficient, p value): SBPH (1~=1.2, p<0.001), DBPH (fi=I.2, p=0.006), weight (1~=2.3, p<0.001), sex (1~=40, p<0.001), antihypertensive treatment (fi=34.2, p<0.001). In the elderly patients casual BP informs better about the cardiac effects apprecialed by echocardiography titan ABPM measurements. With this model, in the elderly, 48% of the LVM is explained.

Prediction of left ventricular mass (LVM) in the elderly by casual measurement and ambulatory blood pressure monitoring (ABPM)