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Related Experiment Videos

Deep hypothermic circulatory arrest: current status and indications.

Richard A Jonas1

  • 1Department of Cardiac Surgery, Children's Hospital, Boston, MA 02115, USA.

Seminars in Thoracic and Cardiovascular Surgery. Pediatric Cardiac Surgery Annual
|May 8, 2002
PubMed
Summary

Deep hypothermic circulatory arrest offers advantages in pediatric cardiac surgery, reducing cardiopulmonary bypass complications. Ongoing research refines its use and explores alternatives for improved patient outcomes.

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Area of Science:

  • Pediatric Cardiac Surgery
  • Cardiovascular Research
  • Hypothermic Techniques

Background:

  • Cardiopulmonary bypass (CPB) has deleterious effects in small children.
  • Deep hypothermic circulatory arrest (DHCA) was developed to mitigate CPB sequelae.
  • DHCA offers advantages like reduced CPB exposure and improved surgical fields.

Purpose of the Study:

  • To review the clinical and laboratory research defining the limits of DHCA.
  • To place the development of DHCA in historical perspective.
  • To evaluate the influence of various strategies on neurological protection during DHCA.

Main Methods:

  • Review of clinical investigations, including the Boston Circulatory Arrest Study.
  • Analysis of laboratory investigations.

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  • Examination of factors such as pH, hematocrit, oxygen strategy, and intermittent reperfusion.

    • Main Results:

    • DHCA provides benefits including decreased CPB exposure and reduced postoperative edema.
    • Extensive literature exists on DHCA, addressing neurological protection concerns.
    • Technique modifications prompt reconsideration of DHCA indications in pediatric surgery.

    Conclusions:

    • While DHCA is established, research is needed to refine continuous CPB methods.
    • Clear guidelines for DHCA parameters (flow, temperature, duration) are lacking.
    • Current DHCA knowledge allows safer application than unproven CPB innovations.