MK0954A-264 Filter Study (0954A-264)(COMPLETED)

Inclusion Criteria: * Male and female patients with mild to severe hypertension (SiDBP 90-120 mmHg) Exclusion Criteria: * Systolic BP \> 200 mmHg * Secondary or malignant hypertension * Taking more than 2 antihypertensive medications * Hypertension induced by oral contraceptives * Hx of cerebral vascular accident within 6 months * Hx of angina, myocardial infarction, PCI, CABG, or decompensated CHF within 6 months * Clinically significant AV conduction disturbance or potentially life threatening ventricular arrhythmias, valvular disease, cardiomyopathy, unexplained syncope * History of angioedema * Sensitivity to AII receptor antagonists or HCTZ, nephrotic syndrome,single kidney function * Pregnancy or lactation.