| Popis: |
International guides of hypertension (HT) recommend self-blood -pressure-measurement (SBPM) values higher than 135/85 mmHg to determine isolated clinical hypertension (ICH). This paper suggests a lower cut-off.This prospective, protocol-based study included 378 patients, 250 new hypertensive patients without previous treatment. Both SBPM and ambulatory blood pressure monitoring (ABPM) were measured in all patients. Risk factors and target organ disease (TOD) were evaluated by electrocardiography, renal function, microalbuminuria and retinography.With a 135/85 mmHg ICH cut-off, only differences in serum creatinine levels (78.67 ICH vs 83.98 micromol/l sustained HT -SHT-; p = 0.03), grade I/II fundus oculi (FO) lesions (44.7 vs 62.8%; p = 0.009) and any FO lesions (48.2 vs 67.4%; p = 0.005) were found. With a ICH cut-off of 130/80 mmHg, a lower risk of grade III/IV FO lesions was found (RR = 0.59; 90% confidence interval [CI], 0.36-0.96; p = 0.06). Any TOD risk was related to SHT with a 130/85 mmHg cut-off (RR = 12.04; 90% CI, 1.03-140.28; p = 0.09).Taking a 135/85 mmHg ICH cut-off, no differences in TOD between ICH and SHT were found. Taking a 130 mmHg ICH systolic blood pressure (SBP) cut-off, those who are below 130 mmHg have a lower risk of grade III/IV FO lesions. Those who are above this value have a higher TOD risk. Looking at TOD risk, we should consider a130 mmHg SBP cut-off for ICH diagnosis. |
