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Oliguria during laparoscopic surgery

D T Chang1, A J Kirsch, I S Sawczuk

  • 1Department of Urology, Squier Urological Clinic, Columbia University College of Physicians and Surgeons, New York, NY.

Journal of Endourology
|October 1, 1994
PubMed
Summary
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Laparoscopic surgery with CO2 pneumoperitoneum temporarily reduces urine output, causing oliguria. Urine flow significantly recovers after desufflation, indicating acute, reversible renal dysfunction.

Area of Science:

  • Nephrology
  • Surgical Innovation
  • Anesthesiology

Background:

  • Oliguria is an uncommon complication of laparoscopic surgery.
  • Carbon dioxide (CO2) pneumoperitoneum is standard in laparoscopic procedures.
  • The impact of CO2 pneumoperitoneum on renal function, specifically urine output, requires further elucidation.

Purpose of the Study:

  • To quantify urine output during and after laparoscopic surgery under CO2 pneumoperitoneum.
  • To investigate the potential causes and implications of oliguria in this surgical context.

Main Methods:

  • Measurement of hourly urine output in six healthy patients during laparoscopic surgery.
  • Monitoring urine output during CO2 insufflation and post-desufflation.
  • Assessment of hemodynamic stability and renal function markers (blood urea nitrogen, creatinine).

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Main Results:

  • Average hourly urine output during insufflation was 0.30 mL/kg/hr, despite a 13.0 mL/kg/hr intravenous fluid infusion rate.
  • Post-desufflation, urine output increased by 467% to 1.7 mL/kg/hr.
  • Hemodynamics and renal function markers remained stable throughout the perioperative period.

Conclusions:

  • CO2 pneumoperitoneum in laparoscopic surgery is associated with acute, reversible oliguria.
  • Increased intra-abdominal pressure during pneumoperitoneum is a likely factor contributing to reduced renal perfusion and urine output.
  • This transient renal dysfunction does not appear to cause lasting renal damage in healthy patients.