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Femoral venous flow during laparoscopic gynecologic surgery
1Sydney Women's Endosurgery Centre and St George Hospital, Department of Obstetrics and Gynaecology, University of New South Wales, Australia.
Summary
The Trendelenburg position increases lower-limb venous return during gynecologic laparoscopy, but pneumoperitoneum dampens this effect. Calf compressors showed no benefit, supporting continued antithrombotic measures.
Area of Science:
- Vascular Surgery
- Anesthesiology
- Gynecologic Surgery
Background:
- Lower-limb venous return is critical during major surgeries.
- Understanding venous flow dynamics in gynecologic operative laparoscopy is essential for preventing thromboembolic events.
Purpose of the Study:
- To assess the impact of the Trendelenburg position and pneumoperitoneum on lower-limb venous return.
- To evaluate the efficacy of pneumatic calf compressors in improving venous flow during gynecologic operative laparoscopy.
Main Methods:
- Measured peak systolic venous velocities (PSVV) in the left common femoral vein in five patients.
- Recorded PSVV at baseline, after Trendelenburg positioning, after pneumoperitoneum induction, and intraoperatively.
- Assessed the effect of pneumatic calf compressors on PSVV.
Main Results:
- Trendelenburg positioning significantly increased PSVV (23.1 to 31.5 cm/s).
- Pneumoperitoneum significantly reduced PSVV (to 15.9 cm/s) and altered waveform to monophasic.
- Calf compressors did not significantly improve PSVV at any stage.
Conclusions:
- While Trendelenburg position enhances venous return, pneumoperitoneum counteracts this effect.
- Pneumatic calf compressors are not effective in improving lower-limb venous return in this context.
- Continued use of antithrombotic measures is recommended for patients undergoing gynecologic operative laparoscopy.