A Study Of Different Doses Of TBC3711 In Patients With Uncontrolled High Blood Pressure Already Taking Medications For High Blood Pressure.

• Maximum Blood Pressure (BP) Increase [ Time Frame: Baseline (Pre-Dose on Day 1 of Week 2) up to Week 12 ] [ Designated as safety issue: Yes ]
  BP is the pressure of the blood within the arteries. It is produced primarily by the contraction of the heart muscle. BP measurement is recorded by 2 numbers: systolic BP (SBP, BP when heart is contracting; it is the maximum arterial pressure during contraction of left ventricle) and diastolic BP (DBP, BP when heart is relaxing; it is the minimum arterial pressure during relaxation and dilation of ventricles). Maximum increase was calculated by subtracting baseline value from each post-dose measurement and selecting maximum of these values.
  
  
• Weighted Mean (Area Under Effect Curve [AUEC]) Blood Pressure Change [ Time Frame: Baseline (Pre-Dose on Day 1 of Week 2) up to Week 12 ] [ Designated as safety issue: Yes ]
  AUEC was calculated as the positive area under the change from baseline curve for sitting and standing SBP and DBP to Week 12, estimated by the linear trapezoidal rule corrected for the pre-dose baseline value. In the event that post-dose values returned below baseline at or before Week 12, then AUEC was calculated by setting the negative values to zero and taking only the positive area into account.
  
  

• Sitting Systolic Blood Pressure (SBP) [ Time Frame: Pre-Dose and 2 hour Post-Dose on Baseline (Day 1 of Placebo Run-In Phase), Week 1, 2, 3, 4, 6, 8, 10 ] [ Designated as safety issue: Yes ]
  SBP is the BP (pressure exerted by circulating blood on the walls of blood vessels) when heart is contracting; it is the maximum arterial pressure during contraction of left ventricle of heart. A total of 3 measurements were performed and average was calculated at each time point in participant's non-dominant arm using appropriate-sized cuff (cuff bladder encircling at least 80 percent [%] of the arm) after participant sat for 5 minutes for the first measurement and 2 minutes for second and third measurements. The same arm was used throughout the study.
  
  
• Standing Systolic Blood Pressure (SBP) [ Time Frame: Pre-Dose and 2 hour Post-Dose on Baseline (Day 1 of Placebo Run-In Phase), Week 1, 2, 3, 4, 6, 8, 10 ] [ Designated as safety issue: Yes ]
  SBP is the BP (pressure exerted by circulating blood on the walls of blood vessels) when heart is contracting; it is the maximum arterial pressure during contraction of left ventricle of heart. A total of 3 measurements were performed and average was calculated at each time point in participant's non-dominant arm using appropriate-sized cuff (cuff bladder encircling at least 80% of the arm) after participant stood for 2 minutes. The same arm was used throughout the study.
  
  
• Sitting Diastolic Blood Pressure (DBP) [ Time Frame: Pre-Dose and 2 hour Post-Dose on Baseline (Day 1 of Placebo Run-In Phase), Week 1, 2, 3, 4, 6, 8, 10 ] [ Designated as safety issue: Yes ]
  DBP is the BP (pressure exerted by circulating blood on the walls of blood vessels) when heart is relaxing; it is the minimum arterial pressure during relaxation and dilation of ventricles of heart. A total of 3 measurements were performed and average was calculated at each time point in participant's non-dominant arm using appropriate-sized cuff (cuff bladder encircling at least 80% of the arm) after participant sat for 5 minutes for the first measurement and 2 minutes for second and third measurements. The same arm was used throughout the study.
  
  
• Standing Diastolic Blood Pressure (DBP) [ Time Frame: Pre-Dose and 2 hour Post-Dose on Baseline (Day 1 of Placebo Run-In Phase), Week 1, 2, 3, 4, 6, 8, 10 ] [ Designated as safety issue: Yes ]
  DBP is the BP (pressure exerted by circulating blood on the walls of blood vessels) when heart is relaxing; it is the minimum arterial pressure during relaxation and dilation of ventricles of heart. A total of 3 measurements were performed and average was calculated at each time point in participant's non-dominant arm using appropriate-sized cuff (cuff bladder encircling at least 80% of the arm) after participant stood for 2 minutes. The same arm was used throughout the study.
  
  
• Change From Standing to Sitting Systolic Blood Pressure (SBP) at Week 10 [ Time Frame: Pre-Dose and 2 hours Post-Dose on Week 10 ] [ Designated as safety issue: Yes ]
  SBP is the BP (pressure exerted by circulating blood on the walls of blood vessels) when heart is contracting; it is the maximum arterial pressure during contraction of left ventricle of heart. A total of 3 measurements were performed and average was calculated at each time point in participant's non-dominant arm using appropriate-sized cuff (cuff bladder encircling at least 80% of the arm). The same arm was used throughout the study.
  
  
• Change From Standing to Sitting Diastolic Blood Pressure (DBP) at Week 10 [ Time Frame: Pre-Dose and 2 hours Post-Dose on Week 10 ] [ Designated as safety issue: Yes ]
  DBP is the BP (pressure exerted by circulating blood on the walls of blood vessels) when heart is relaxing; it is the minimum arterial pressure during relaxation and dilation of ventricles of heart. A total of 3 measurements were performed and average was calculated at each time point in participant's non-dominant arm using appropriate-sized cuff (cuff bladder encircling at least 80% of the arm). The same arm was used throughout the study.
  
  
• Change From Pre-Dose to Post-Dose in Systolic Blood Pressure (SBP) at Week 10 [ Time Frame: Pre-Dose and 2 hours Post-Dose on Week 10 ] [ Designated as safety issue: Yes ]
  SBP is the BP (pressure exerted by circulating blood on the walls of blood vessels) when heart is contracting; it is the maximum arterial pressure during contraction of left ventricle of heart. A total of 3 measurements were performed and average was calculated at each time point in participant's non-dominant arm using appropriate-sized cuff (cuff bladder encircling at least 80% of the arm). The same arm was used throughout the study.
  
  
• Change From Pre-Dose to Post-Dose in Diastolic Blood Pressure (DBP) at Week 10 [ Time Frame: Pre-Dose and 2 hours Post-Dose on Week 10 ] [ Designated as safety issue: Yes ]
  DBP is the BP (pressure exerted by circulating blood on the walls of blood vessels) when heart is relaxing; it is the minimum arterial pressure during relaxation and dilation of ventricles of heart. A total of 3 measurements were performed and average was calculated at each time point in participant's non-dominant arm using appropriate-sized cuff (cuff bladder encircling at least 80% of the arm). The same arm was used throughout the study.
  
  

The study was stopped due to Pfizer (sponsor) decision that the compound would not be involved in any further clinical development for the indication of resistant hypertension on 05 August 2008. This decision was not based on any safety or efficacy concern.