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Related Experiment Videos

Suspended animation for delayed resuscitation

R Bellamy1, P Safar, S A Tisherman

  • 1The Borden Institute, Walter Reed Army Medical Center, Washington, DC 20307-5001, USA.

Critical Care Medicine
|February 1, 1996
PubMed
Summary
This summary is machine-generated.

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Suspended animation, a state of therapeutic hypothermia, offers potential to preserve organs during prolonged circulatory arrest. Further research is crucial for its application in trauma and surgery.

Area of Science:

  • Biomedical Engineering
  • Emergency Medicine
  • Surgical Innovation

Background:

  • Suspended animation involves inducing tolerance to temporary systemic ischemia, enabling organ preservation during circulatory arrest (>1 hour) for survival without brain damage.
  • Current medical interventions are insufficient for managing severe exsanguination from trauma or sudden cardiac arrest, necessitating novel approaches.

Purpose of the Study:

  • To explore the potential of suspended animation in saving victims of uncontrollable exsanguination (traumatic and non-traumatic) by allowing evacuation and surgery during circulatory arrest.
  • To investigate the feasibility of suspended animation for non-traumatic sudden death cases and for specific surgical procedures requiring a no-flow state.
  • To brainstorm current knowledge, future research directions, and the justification for a major research initiative in suspended animation.

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Main Methods:

  • Discussion and brainstorming among researchers with interests in suspended animation.
  • Review of existing knowledge on reanimation, hypothermia, and organ preservation.
  • Consideration of animal models (e.g., dogs with 1-hour circulatory arrest under profound hypothermia) and lessons from hypoxia-tolerant animals.

Main Results:

  • Complete reversibility of 1-hour circulatory arrest in dogs under profound hypothermia (<10°C) using portable cardiopulmonary bypass was demonstrated.
  • Various related research topics were addressed, including pharmacologic induction, asanguinous hypothermic bypass, electric anesthesia, opiate therapy, cryobiology, myocardial and organ preservation, and reperfusion injury.

Conclusions:

  • A breakthrough in suspended animation is considered achievable, not utopian.
  • Ongoing communication and a coordinated, multicenter, basic and applied research effort on suspended animation are strongly indicated and justified.