The antihypertensive efficacy of HCTZ in its daily dose of 12.5 to 25 mg as measured in head-to-head studies by ambulatory BP measurement is consistently inferior to that of all other drug classes .
Because outcome data at this dose are lacking , HCTZ is an inappropriate first-line drug for the treatment of hypertension
OBJECTIVES The purpose of this study was to evaluate the antihypertensive efficacy of hydrochlorothiazide ( HCTZ ) by ambulatory blood pressure ( BP ) monitoring .
BACKGROUND HCTZ is the most commonly prescribed antihypertensive drug worldwide .
More than 97 % of all HCTZ prescriptions are for 12.5 to 25 mg per day .
The antihypertensive efficacy of HCTZ by ambulatory BP monitoring is less well defined .
Predictors of antihypertensive drug responses: initial data from a placebo-controlled, randomized, cross-over study with four antihypertensive drugs (The GENRES Study).
BACKGROUND Only a minority of hypertensive individuals is adequately controlled for their hypertension , partially because reliable predictors for efficient antihypertensive drug therapy are lacking . METHODS In a prospect i ve , r and omized , double-blind , cross-over , placebo-controlled study ( The GENRES Study ) , 208 moderately hypertensive Finnish men ( aged 35 to 60 years ) were treated for 4 weeks with antihypertensive drugs from four different classes : amlodipine ( 5 mg ) , bisoprolol ( 5 mg ) , hydrochlorothiazide ( 25 mg ) , or losartan ( 50 mg ) daily . Each individual received each of the four monotherapies in a r and omized order . Four-week placebo periods were included before and between drug treatment periods . Antihypertensive responses were assessed with 24-h ambulatory and office measurements and analyzed according to age , body mass index , triceps skin fold thickness , waist-to-hip ratio , duration of hypertension , number of previous antihypertensive drugs , number of affected parents , and blood pressure ( BP ) levels , and profiles during placebo periods . RESULTS The median BP responses in 24-h ambulatory recordings ( systolic/diastolic ) were 11/8 mm Hg for bisoprolol , 9/6 mm Hg for losartan , 7/5 mm Hg for amlodipine , and 5/2 mm Hg for hydrochlorothiazide . The highest pairwise within-subject correlations in BP responses were seen for the combinations of bisoprolol-losartan and amlodipine-hydrochlorothiazide . The BP responses to bisoprolol and losartan did not vary according to the variables .  Amlodipine and hydrochlorothiazide responses were positively correlated with age , placebo BP level , and lower night-time dipping on placebo . CONCLUSIONS Baseline clinical and BP parameters may be used to predict the efficacy of antihypertensive therapies . The GENRES Study material should provide an excellent platform for future pharmacogenetic analyses of antihypertensive drug responsiveness
The antihypertensive efficacy of HCTZ in its daily dose of 12.5 to 25 mg as measured in head-to-head studies by ambulatory BP measurement is consistently inferior to that of all other drug classes .
Because outcome data at this dose are lacking , HCTZ is an inappropriate first-line drug for the treatment of hypertension
OBJECTIVES The purpose of this study was to evaluate the antihypertensive efficacy of hydrochlorothiazide ( HCTZ ) by ambulatory blood pressure ( BP ) monitoring .
BACKGROUND HCTZ is the most commonly prescribed antihypertensive drug worldwide .
More than 97 % of all HCTZ prescriptions are for 12.5 to 25 mg per day .
The antihypertensive efficacy of HCTZ by ambulatory BP monitoring is less well defined .