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Related Experiment Videos

Venous hemodynamic changes during laparoscopic cholecystectomy

A P Sobolewski1, R M Deshmukh, B L Brunson

  • 1Department of Surgery, Good Samaritan Hospital, Cincinnati, Ohio, USA.

Journal of Laparoendoscopic Surgery
|December 1, 1995
PubMed
Summary
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Laparoscopic surgery

Area of Science:

  • Vascular surgery
  • Surgical outcomes
  • Venous thromboembolism

Background:

  • Virchow's triad identifies venous stasis, vessel wall damage, and hypercoagulability as key factors in thrombosis.
  • Laparoscopic surgery involves pneumoperitoneum, increasing intra-abdominal pressure and potentially affecting venous return from the legs.
  • Altered venous hemodynamics during laparoscopy may lead to venous stasis and increase the risk of deep vein thrombosis.

Purpose of the Study:

  • To investigate the hemodynamic changes in the common femoral vein during laparoscopic cholecystectomy.
  • To assess the impact of pneumoperitoneum on venous diameter and flow volume in the legs.
  • To evaluate the reversibility of these changes after abdominal deflation.

Main Methods:

  • Duplex ultrasound was employed to measure the diameter and venous flow volume of the common femoral vein.

Related Experiment Videos

  • Measurements were taken at three critical time points: pre-insufflation, during pneumoperitoneum, and post-deflation.
  • The study focused on patients undergoing laparoscopic cholecystectomy.

    • Main Results:

    • Abdominal insufflation led to a significant increase in the mean cross-sectional area of the common femoral vein (0.83 to 1.15 cm2; p = 0.0024).
    • Venous flow in the common femoral vein significantly decreased during pneumoperitoneum (11.00 to 6.06 cm3/sec; p = 0.0008).
    • Following abdominal deflation, venous flow returned to near baseline levels (6.06 to 9.94 cm3/sec; p = 0.0005), with no significant change in vein diameter.

    Conclusions:

    • Pneumoperitoneum during laparoscopic cholecystectomy causes common femoral vein dilation and reduced venous flow.
    • These hemodynamic alterations suggest a potential increase in venous stasis and risk of thrombosis.
    • Venous flow in the common femoral vein recovers after the release of pneumoperitoneum.