24-Hour ambulatory blood pressure response to combination valsartan/hydrochlorothiazide and amlodipine/hydrochlorothiazide in stage 2 hypertension by ethnicity: the EVALUATE study.
Several studies reported racial/ethnic differences in blood pressure (BP) response to antihypertensive monotherapy. In a 10-week study of stage 2 hypertension, 320/25 mg valsartan/hydrochlorothiazide (HCTZ) reduced ambulatory BP (ABP) significantly more effectively than 10/25 mg amlodipine/HCTZ. Results (post hoc analysis) are described in Caucasians (n=256), African Americans (n=79), and Hispanics (n=86). Compared with clinic-measured BP (no significant treatment-group differences in ethnic subgroups), least-squares mean reductions from baseline to week 10 in mean ambulatory systolic BP (MASBP) and mean ambulatory diastolic BP (MADBP) favored valsartan/HCTZ over amlodipine/HCTZ in Caucasians (-21.9/-12.7 mm Hg vs -17.6/-9.5 mm Hg; P=.0004/P<.0001). No treatment-group differences in MASBP/MADBP were observed in African Americans (-17.3/-10.6 vs -17.9/-9.5; P=.76/P=.40) or Hispanics (-17.9/-9.7 vs -14.2/-7.2; P=.20/P=.17). Based on ABP monitoring, valsartan/HCTZ is more effective than amlodipine/HCTZ in lowering ABP in Caucasians. In African Americans and Hispanics, both regimens are similarly effective.
Case Western Reserve University, Cleveland, OH, USA. jxw20@case.edu
Jackson T
JT
Wright
Yves
Y
Lacourcière
Rita
R
Samuel
Dion
D
Zappe
Das
D
Purkayastha
Henry R
HR
Black
D000368:Aged; D000369:Aged, 80 and over; D017311:Amlodipine / Q000008:administration & dosage / Q000009:adverse effects; D000959:Antihypertensive Agents / Q000008:administration & dosage / Q000009:adverse effects; D001794:Blood Pressure / Q000187:drug effects; D018660:Blood Pressure Monitoring, Ambulatory / Q000706:statistics & numerical data; D004311:Double-Blind Method; D004338:Drug Combinations; D005006:Ethnicity; D005260:Female; D006801:Humans; D006852:Hydrochlorothiazide / Q000008:administration & dosage / Q000009:adverse effects; D006973:Hypertension / Q000175:diagnosis / Q000188:drug therapy / Q000453:epidemiology / Q000503:physiopathology; D008297:Male; D044469:Racial Groups; D012044:Regression Analysis; D012720:Severity of Illness Index; D013777:Tetrazoles / Q000008:administration & dosage / Q000009:adverse effects; D016896:Treatment Outcome; D014633:Valine / Q000008:administration & dosage / Q000009:adverse effects / Q000031:analogs & derivatives*; D000068756:Valsartan
D000959:Antihypertensive Agents; D004338:Drug Combinations; D013777:Tetrazoles; D006852:Hydrochlorothiazide; D017311:Amlodipine; D000068756:Valsartan; D014633:Valine