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A Comparison of Two Target Mean Arterial Pressures in the Resuscitation of Hypotensive Trauma Patients

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00459160
Recruitment Status : Unknown
Verified November 2010 by Baylor College of Medicine.
Recruitment status was:  Recruiting
First Posted : April 11, 2007
Last Update Posted : December 1, 2010
Information provided by:
Baylor College of Medicine

Brief Summary:
The goal of this study will be to determine if a lower than normal blood pressure during surgery for bleeding in the abdomen or chest will result in decreased bleeding and decreased chance of death.

Condition or disease Intervention/treatment Phase
Hemorrhagic Shock Trauma Wounds, Penetrating Shock, Traumatic Multiple Trauma Procedure: Intraoperative Hypotensive Resuscitation Not Applicable

Detailed Description:
For the proposed study, all trauma patients undergoing laparotomy or thoracotomy for trauma that had a systolic blood pressure < 90 mmHg prior to going to the operating room will be randomized to one of two groups. The randomization will take place at the operating room door. The first group will have a target minimum mean arterial pressure of 50 mm Hg (LMAP) and the second group will have a target minimum mean arterial pressure of 65 mmHg (HMAP). Before the operating room and in all other aspects of their care the patients will be treated as per standard of care. Patients will then be followed to determine if there is a difference in 30 day survival between the two groups. Secondary outcome measures will be Sequential Organ Failure Assessment (SOFA) score, APACHE II, ARDS, ICU length of stay, myocardial ischemia, stroke, acidosis, coagulopathy by conventional labs and thromboelastogram, estimated blood loss, transfusion requirements, Glasgow Outcome Score, the presence of leukocyte apoptosis, the serum level of the pro-inflammatory cytokines, IL-6 and G-CSF, and the rate of infectious complications (VAP, UTI, Wound infections). Blood samples (20 ml each) will be taken at three time points: prior to randomization, immediately after the end of resuscitation protocol, and 24 hrs after randomization. Blood will be examined for the presence of leukocyte apoptosis and levels of IL-6 and G-CSF.

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Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 271 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: A Comparison of Two Target Mean Arterial Pressures in the Resuscitation of Hypotensive Trauma Patients Undergoing Laparotomy or Thoracotomy for Trauma: A Prospective Randomized Controlled Clinical Trial
Study Start Date : July 2007
Estimated Primary Completion Date : July 2011
Estimated Study Completion Date : July 2011

Resource links provided by the National Library of Medicine

Arm Intervention/treatment
Experimental: Low MAP Group
Hypotensive Group with a target minimum MAP of 50 mmHg
Procedure: Intraoperative Hypotensive Resuscitation
Patients will have a target minimum MAP of 50 for the case

No Intervention: High MAP group
Non experimental group: These patients will have a target minimum MAP of 65 mm Hg

Primary Outcome Measures :
  1. 30 day survival [ Time Frame: 30 days ]

Secondary Outcome Measures :
  1. Sequential Organ Failure Assessment (SOFA) score [ Time Frame: 30 days ]
  2. APACHE II [ Time Frame: 30 days ]
  3. ARDS [ Time Frame: 30 days ]
  4. ICU length of stay [ Time Frame: 30 days ]
  5. Ventilator-free days [ Time Frame: 30 days ]
  6. Myocardial ischemia [ Time Frame: 30 days ]
  7. Stroke [ Time Frame: 30 days ]
  8. Acidosis (pH and BE) [ Time Frame: 30 days ]
  9. Coagulopathy by conventional labs and thromboelastogram [ Time Frame: 30 days ]
  10. Estimated blood loss [ Time Frame: 30 days ]
  11. Transfusion requirements [ Time Frame: 30 days ]
  12. Glasgow Outcome Score [ Time Frame: 30 days ]
  13. Quantification of leukocyte apoptosis [ Time Frame: 2 days ]
  14. Rate of infectious complications (VAP, UTI, wound infections). [ Time Frame: 30 days ]

Information from the National Library of Medicine

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Ages Eligible for Study:   12 Years to 45 Years   (Child, Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • All adult patients seen in the Ben Taub emergency center that have suffered a trauma, have a systolic blood pressure less than 90mm Hg, and are going to the operating room for a laparotomy or thoracotomy

Exclusion Criteria:

  • Known or suspected head injury
  • Age > 45 years old, <= 12 years old
  • Incarcerated individuals
  • Pregnant women
  • Patients with an advanced directive that refuse resuscitation
  • Patients with "opt-out" bracelets that signify their refusal of participation in the project

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00459160

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Contact: Matthew M Carrick, MD 713-873-4381

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United States, Texas
Ben Taub General Hospital Recruiting
Houston, Texas, United States, 77030
Contact: Margie Higgins   
Sponsors and Collaborators
Baylor College of Medicine
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Principal Investigator: Matthew M Carrick, MD Baylor College of Medicine
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Responsible Party: Matthew M. Carrick, Baylor College of Medicine Identifier: NCT00459160    
Other Study ID Numbers: (ER) H-19631
First Posted: April 11, 2007    Key Record Dates
Last Update Posted: December 1, 2010
Last Verified: November 2010
Keywords provided by Baylor College of Medicine:
Hypotensive Resuscitation
Hypotensive Anesthesia
Hemorrhagic Shock
Penetrating Trauma
Additional relevant MeSH terms:
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Shock, Hemorrhagic
Shock, Traumatic
Wounds and Injuries
Multiple Trauma
Wounds, Penetrating
Pathologic Processes
Antihypertensive Agents