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Related Experiment Videos

Prospective MAST study in 911 patients.

K L Mattox1, W Bickell, P E Pepe

  • 1Cora and Webb Mading Department of Surgery, Baylor College of Medicine, Houston, Texas 77030.

The Journal of Trauma
|August 1, 1989
PubMed
Summary

The study found that the Military Anti-Shock Trouser (MAST) did not improve survival rates in trauma patients and may worsen outcomes, especially for thoracic injuries. Overall mortality was higher in the MAST group.

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Area of Science:

  • Trauma Surgery
  • Emergency Medicine
  • Critical Care

Background:

  • Hypotension is a critical indicator in trauma patients.
  • The Military Anti-Shock Trouser (MAST) was developed to treat shock and hypotension.

Purpose of the Study:

  • To evaluate the efficacy of MAST in improving survival rates for patients with severe hypotension.
  • To determine if MAST impacts mortality based on injury location and prehospital time.

Main Methods:

  • Randomized controlled trial involving 911 patients with systolic blood pressure <= 90 mm Hg.
  • Patients were assigned to either MAST or No-MAST groups and transported to a Level I Trauma Center.
  • Epidemiologic data and injury severity were analyzed.

Main Results:

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  • No survival benefit was observed with MAST for head, extremity, chest, abdomen, or neck injuries.
  • MAST application was associated with increased mortality in patients with cardiac and thoracic vascular injuries.
  • Overall mortality was 31% in the MAST group versus 25% in the No-MAST group (p=0.05).

Conclusions:

  • MAST does not improve survival in hypotensive trauma patients.
  • MAST may be detrimental, particularly for patients with thoracic or cardiac injuries.
  • Current evidence does not support the routine use of MAST in civilian trauma care.