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Related Experiment Videos

Quantitative bacteriological study of the wound track.

H M Tian1, G G Deng, M J Huang

  • 1Research Institute of Surgery, Third Military Medical College, Chongqing, China.

The Journal of Trauma
|January 1, 1988
PubMed
Summary

Missile wounds rapidly increase bacteria in devitalized muscle tissue. Aerobic and anaerobic bacteria counts escalate significantly within 24 hours post-injury, highlighting infection risks.

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Area of Science:

  • Trauma research
  • Bacteriology
  • Wound healing

Background:

  • Missile injuries introduce complex challenges in trauma care.
  • Understanding bacterial contamination in devitalized tissue is crucial for infection prevention.

Purpose of the Study:

  • To quantify aerobic and anaerobic bacterial proliferation in missile-wounded muscle tissue over time.
  • To compare bacterial loads in devitalized versus healthy tissue post-injury.

Main Methods:

  • Mongrel dogs (n=46) sustained hind leg missile wounds (velocity 730-1,570 m/s, fragments 0.44-1.03 gm).
  • Bacteriologic methods were used to enumerate bacteria in muscle tissue at 6, 12, and 24 hours post-wounding.
  • Tissue specimens were collected immediately after injury for culture analysis.

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Main Results:

  • Aerobic bacteria counts in devitalized muscle: 10(3)-10(4)/gm at 6 hr, increasing to 10(5)/gm at 12 and 24 hr.
  • Anaerobic bacteria counts: 10(4)-10(5)/gm at 6 hr.
  • Bacterial concentrations were consistently higher in devitalized tissue compared to healthy tissue.
  • Bacterial cultures were positive in all specimens taken immediately post-injury.

Conclusions:

  • Missile wounding leads to rapid and significant bacterial proliferation in devitalized muscle tissue.
  • The high bacterial load, particularly of anaerobes early on, indicates a substantial risk of infection.
  • Immediate post-injury tissue harbors bacteria, underscoring the need for prompt wound management.