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Related Experiment Videos

Endoscopic surgery and telemedicine in microgravity: developing contingency procedures for exploratory class

J A Jones1, S Johnston, M Campbell

  • 1National Aeronautics and Space Administration/Johnson Spacecraft Center and University of Texas Medical Branch Aerospace Medicine Program, Houston, Texas 77058, USA.

Urology
|May 1, 1999
PubMed
Summary

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Astronauts face significant urinary stone risk in space. This study shows endoscopic ureteral stenting is a feasible contingency management technique for spaceflight urinary calculus, with clear imaging for telemedicine.

Area of Science:

  • Space medicine
  • Urology
  • Minimally invasive surgery

Background:

  • Extended space missions increase astronaut urinary calculus risk.
  • Comprehensive strategies for spaceflight stone risk require preventive and contingency management (CM) plans.

Purpose of the Study:

  • To demonstrate the feasibility of endoscopic ureteral stenting with ultrasound guidance as an in-flight CM technique for urinary calculus.
  • To assess the utility of diagnostic clinical imaging via telemedicine transmission.

Main Methods:

  • Feasibility study using International Space Station/Human Research Facility ultrasound unit and flexible cystoscope.
  • Bilateral ureteral stenting of porcine ureters in zero gravity (0g) using biocompatible soft ureteral stents.
  • Evaluation of downlinked endoscopic surgical and ultrasound images for diagnostic quality.

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Main Results:

  • Successful bilateral ureteral stenting of porcine ureters was achieved in zero gravity (0g).
  • Downlinked endoscopic and ultrasound images from 0g were comparable in quality to 1g images.
  • Images demonstrated diagnostic clinical utility via telemedicine transmission.

Conclusions:

  • Endoscopic ureteral stenting with ultrasound guidance is a viable CM technique for spaceflight urinary calculus.
  • High-quality imaging in 0g supports telemedicine applications for surgical procedures.
  • Technological advancements in 0g medical procedures may enhance terrestrial patient care and reduce morbidity.