Effect of a physician uncertainty reduction intervention on blood pressure in uncontrolled hypertensives--a cluster randomized trial.

Background: Clinical inertia, provider failure to appropriately intensify treatment, is a major contributor to uncontrolled blood pressure (BP). Some clinical inertia may result from physician uncertainty over the patient's usual BP, adherence, or value of continuing efforts to control BP through lifestyle changes.

Objective: To test the hypothesis that providing physicians with uncertainty reduction tools, including 24-h ambulatory BP monitoring, electronic bottle cap monitoring, and lifestyle assessment and counseling, will lead to improved BP control.

Effect of angiotensin receptor blockade on insulin sensitivity and endothelial function in abdominally obese hypertensive patients with impaired fasting glucose.

AngII (angiotensin II) may contribute to cardiovascular risk in obesity via adverse effects on insulin sensitivity and endothelial function. In the present study, we examined the effects of ARB (angiotensin receptor blocker) therapy (losartan, 100 mg/day) on insulin sensitivity and endothelial function in 53 subjects with stage I hypertension, abdominal obesity and impaired fasting glucose. The study design was a randomized double-blinded parallel design placebo-controlled multi-centre trial of 8 weeks duration.

Peripheral and central blood pressure responses of combination aliskiren/hydrochlorothiazide and amlodipine monotherapy in African American patients with stage 2 hypertension: the ATLAAST trial.

Efficacy of antihypertensive agents on central blood pressure (BP) in African Americans is not well studied. The authors report on an 8-week double-blind, randomized study of African American patients with stage 2 hypertension that compared brachial and central BP responses (substudy of 53 patients) to combination aliskiren/hydrochlorthiazide (HCTZ) and amlodipine monotherapy. Following a 1- to 4-week washout, initial therapy was aliskiren/HCTZ 150/12.

Clinical role of direct renin inhibition in hypertension.

Treatment strategies to improve blood pressure control, reduce end-organ damage, and improve cardiovascular outcomes are more important today than ever before. Most patients will require combination therapy to achieve target blood pressure; early initiation of combination therapy may help patients achieve blood pressure control more rapidly. Low-dose combinations may be more effective with fewer adverse effects than higher doses of single agents.

Does reducing physician uncertainty improve hypertension control?: rationale and methods.

Hypertension affects nearly one third of the US population overall, and the prevalence rises sharply with age. In spite of public educational campaigns and professional education programs to encourage blood pressure measurement and control of both systolic and diastolic control to <140/90 mm Hg (or 130/80 mm Hg if diabetic), 43% of treated hypertensives do not achieve the recommended Seventh Report of the Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure target. Among blacks, 48% are uncontrolled on treatment.

The role of baseline blood pressure in guiding treatment choice: a secondary analysis of the use of valsartan/hydrochlorothiazide as initial therapy in hypertensive adults in a randomized, double-blind, placebo-controlled trial.

Background And Objective: Baseline blood pressure (BP) is a strong predictor of response to antihypertensive therapy and the patient's ability to reach BP goals. The objective of this study was to evaluate the role of baseline BP as a determinant of systolic BP (SBP) and treatment outcome to assist in the choice of initial therapy.

Methods: This was a double-blind, placebo-controlled clinical trial (n = 1329) in patients with essential hypertension (mean sitting diastolic BP [DBP] > or = 95 mmHg and <110 mmHg) who were randomized to placebo, valsartan 160 mg, valsartan 320 mg, hydrochlorothiazide (HCTZ) 12.

Direct renin inhibition: focus on aliskiren.

Background: Despite the availability of many effective, well-tolerated drugs, a significant proportion of treated hypertensive patients still have uncontrolled high blood pressure (BP) and thus face serious morbidity and mortality. The renin-angiotensin aldosterone system (RAAS) is a key target for BP control and for cardiovascular and renal protection. Renin controls the rate-limiting step in the RAAS cascade and hence is the optimal target for RAAS suppression.

Comparison of valsartan/hydrochlorothiazide combination therapy at doses up to 320/25 mg versus monotherapy: a double-blind, placebo-controlled study followed by long-term combination therapy in hypertensive adults.

Background: One third of patients treated for hypertension attain adequate blood pressure (BP) control, and multidrug regimens are often required. Given the lifelong nature of hypertension, there is a need to evaluate the long-term efficacy and tolerability of higher doses of combination anti-hypertensive therapies.

Objective: This study investigated the efficacy and tolerability of valsartan (VAL) or hydrochlorothiazide (HCTZ)-monotherapy and higher-dose combinations in patients with essential hypertension.

Aliskiren, an orally effective renin inhibitor, provides antihypertensive efficacy alone and in combination with valsartan.

Background: By blocking the renin-angiotensin-aldosterone system (RAAS) at its rate-limiting step, renin inhibition may provide improved RAAS suppression. We investigated the blood pressure (BP)-lowering effects of the oral direct renin inhibitor aliskiren, alone or in combination with the angiotensin receptor blocker valsartan.

Methods: In this multicenter, randomized, placebo-controlled, 8-week trial, 1123 patients with mild-to-moderate hypertension underwent a 3 to 4 week single-blind placebo run-in and were then randomized in a modified factorial study design to receive once-daily, double-blind oral treatment with placebo, aliskiren monotherapy (75, 150, or 300 mg), valsartan monotherapy (80, 160, or 320 mg), aliskiren and valsartan in combination, or valsartan/hydrochlorothiazide (160/12.

Clinical pharmacology of antihypertensive therapy.

Adequate control of blood pressure poses challenges for hypertensive patients and their physicians. Success rates of greater than 80% in reducing blood pressure to target values among high-risk hypertensive patients reported by several recent clinical trials argue that effective medications currently are available. Yet, only 34% of hypertensive patients in the United States are at their goal blood pressure according to the most recent national survey.

Is it time to move to multidrug combinations?

The clinical benefit of aggressive blood pressure (BP) control in reducing adverse cardiovascular and renal outcomes is well documented. However, a majority of patients with hypertension remain poorly controlled with monotherapy and require two or more agents to achieve their target BP levels. Patients with hypertension who also have diabetes or renal disease benefit from even lower BP targets, but may be more difficult to treat and require three or more drugs to achieve control.