Prospective MAST study in 911 patients

J Trauma. 1989 Aug;29(8):1104-11; discussion 1111-2. doi: 10.1097/00005373-198908000-00007.


Nine hundred eleven patients with systolic blood pressures less than or equal to 90 mm Hg were randomized to MAST and No-MAST groups, and all taken to a single Level I Trauma Center. Epidemiologic analysis of etiology, age, race, sex, Trauma Scores, and Injury Severity Scores revealed the two groups to be statistically identical. Seven hundred eighty-four patients were analyzed in detail. The principal injury location was thorax in 41%, abdomen in 32%, extremity in 16%, head in 7%, and neck in 4%. In patients with head and extremity wounds, the mortality rate was clearly not a function of MAST use. In the chest, abdomen, and neck, MAST did not improve survival. Although the total prehospital time was 35.8 + 10.4 minutes for MAST patients and 32.5 +/- 10.7 minutes for No-MAST patients, 70% of patients with MAST had prehospital times greater than 30 minutes compared to 55% of the No-MAST patients. When the prehospital time was greater than 30 minutes, 31% of the MAST patients died, compared to 21% of the No-MAST patients. MAST application adversely affected the outcome most significantly for patients with cardiac and thoracic vascular injury. The overall mortality of 31% in the MAST group, compared to 25% in the No-MAST group was statistically significant (p = 0.05).

Publication types

  • Clinical Trial
  • Comparative Study
  • Randomized Controlled Trial
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Adolescent
  • Adult
  • Evaluation Studies as Topic
  • First Aid
  • Gravity Suits*
  • Humans
  • Hypotension / etiology
  • Hypotension / mortality
  • Hypotension / therapy
  • Prognosis
  • Prospective Studies
  • Random Allocation
  • Shock, Traumatic / mortality
  • Shock, Traumatic / therapy*
  • Texas
  • Urban Population
  • Wounds, Nonpenetrating / complications
  • Wounds, Nonpenetrating / mortality
  • Wounds, Nonpenetrating / therapy
  • Wounds, Penetrating / complications
  • Wounds, Penetrating / mortality
  • Wounds, Penetrating / therapy