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New techniques in fetal surgery.

R W Jennings1, N S Adzick, M T Longaker

  • 1Department of Surgery, University of California, San Francisco.

Journal of Pediatric Surgery
|October 1, 1992
PubMed
Summary
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Researchers developed new methods for fetal monitoring and circulation access. An implantable device tracks fetal heart rate and temperature, while intraosseous access allows for drug delivery and blood sampling in fetal sheep.

Area of Science:

  • Biomedical Engineering
  • Fetal Medicine
  • Surgical Innovation

Background:

  • Fetal surgery requires reliable monitoring of fetal heart rate and temperature.
  • Accessing fetal circulation for interventions like blood sampling or drug administration is challenging.

Purpose of the Study:

  • To develop an implantable radiotelemetry device for fetal electrocardiogram and temperature monitoring.
  • To establish a safe and effective intraosseous access technique for fetal circulation.

Main Methods:

  • Implanted miniaturized radiotelemeter devices in fetal sheep to record electrocardiogram and temperature.
  • Assessed intraosseous needle access in fetal sheep and human fetal cadavers for infusion and blood sampling.

Main Results:

Related Experiment Videos

  • The radiotelemeter reliably recorded fetal electrocardiogram and temperature intraoperatively and postoperatively.
  • Intraosseous access was successfully achieved in fetal sheep and cadavers.
  • Intraosseous blood gas values accurately reflected peripheral venous values.
  • Intraosseous administration of sodium bicarbonate, glucose, and calcium chloride effectively reached fetal circulation.

Conclusions:

  • Implantable radiotelemetry and intraosseous access are feasible techniques for fetal monitoring and intervention.
  • These methods offer potential solutions for improving fetal management during and after fetal surgery.