Efficacy and Safety of Valsartan Plus Hydrochlorothiazide in Fixed Dose Combination in Hypertensive Patients Not Controlled by the Free Combination of an Angiotensin Receptor Blocker Plus Hydrochlorothiazide

Study Overview
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Brief Summary
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Recruiting in Germany only: This study will evaluate the safety and efficacy of valsartan plus HCTZ in fixed dose combination in hypertensive patients not responding to treatment with the free combination of Candesartan plus HCTZ. In an optional extension patients with uncontrolled BP at the end of the core study can be treated with valsartan plus HCTZ in fixed dose combination plus amlodipine 5 mg for additional 4 weeks.

Official Title
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An Open-label, Multicenter Study to Evaluate the Efficacy and Tolerability of a 4 Week Therapy With the Fixed Dose Combination of Valsartan 160 mg Plus HCTZ 25 mg in Hypertensive Patients Not Adequately Responding to a 4 Week Therapy With the Free Combination of an Angiotensin Receptor Blocker (Candesartan 32 mg) Plus HCTZ 25 mg

Conditions
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Hypertension

Intervention / Treatment
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* Drug: Valsartan plus Hydrochlorothiazide
* Drug: Candesartan plus Hydrochlorothiazide
* Drug: Amlodipine


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Male or female patients (>=18 years) Females must be either post-menopausal for one year, surgically sterile or using effective contraceptive methods (e.g. intra-uterine device, hormonal contraceptives). Patients with moderate essential hypertension (WHO): Exclusion Criteria: Severe hypertension (WHO) Pregnant or nursing women Treated hypertensive patients with controlled hypertension under current therapy (MSDBP < 90 mmHg and MSSBP < 140 mmHg) A history of cardiovascular disease, including angina pectoris, myocardial infarction, coronary artery bypass graft, percutaneous transluminal coronary angioplasty, transient ischemic attack, stroke, and heart failure NYHA II - IV

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Intervention/Treatment |
| --- |
|Drug: Valsartan plus Hydrochlorothiazide|nan|
|Drug: Candesartan plus Hydrochlorothiazide|nan|
|Drug: Amlodipine|nan|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Diastolic Blood Pressure (DBP) reduction by Valsartan + HCTZ in patients not adequately responding (i.e., DBP >= 90 mmHg) to 4 weeks of treatment with Candesartan + HCTZ in free combination |  |  | 
| For optional extension: DBP reduction by Valsartan + HCTZ + Amlodipine in patients not adequately responding (i.e., DBP >= 90 mmHg and/or Systolic Blood Pressure (SBP) >= 140 mmHg) to 4 weeks of treatment with angiotensin receptor blockers + HCTZ |  |  | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| SBP, pulse pressure, heart rate, normalization (DBP < 90 mmHg and/or SBP < 140 mmHg, resp.)and responder rate(DBP < 90 mmHg or reduction by at least 10 mmHg and/or SBP < 140 mmHg or reduction by at least 20 mmHg, rep) |  |  | 
| Safety and tolerability |  |  | 
| Compliance by pill count |  |  | 
| For optional extension: SBP, pulse pressure, heart rate, normalization and responder rate as defined above |  |  | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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hypertension, valsartan, amlodipine, hydrochlorothiazide