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Hemodynamic changes during laparoscopic cholecystectomy

J L Joris1, D P Noirot, M J Legrand

  • 1Department of Anesthesiology, CHU of Liège, Domaine du Sart Tilman, Belgium.

Anesthesia and Analgesia
|May 1, 1993
PubMed
Summary
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Laparoscopic cholecystectomy under general anesthesia causes significant hemodynamic changes, including decreased cardiac index. These changes are most pronounced during pneumoperitoneum induction in the head-up position.

Area of Science:

  • Anesthesiology
  • Surgical Innovation
  • Cardiovascular Physiology

Background:

  • Laparoscopic cholecystectomy is a common surgical procedure.
  • General anesthesia and patient positioning can impact hemodynamics.
  • Understanding hemodynamic changes is crucial for patient safety.

Purpose of the Study:

  • To investigate hemodynamic alterations during laparoscopic cholecystectomy.
  • To assess the effects of general anesthesia, head-up tilt, and pneumoperitoneum on cardiovascular parameters.
  • To evaluate the impact of these combined factors on cardiac index and vascular resistance.

Main Methods:

  • Invasive hemodynamic monitoring using a pulmonary artery catheter in 15 nonobese ASA Class I patients.
  • Measurements taken before anesthesia, during induction, head-up tilt, and at intervals after peritoneal insufflation.

Related Experiment Videos

  • Controlled ventilation to prevent hypercapnia, with intraabdominal pressure maintained at 14 mm Hg.

    • Main Results:

    • Anesthesia induction significantly decreased mean arterial pressure and cardiac index (CI).
    • Head-up tilt further reduced CI by decreasing cardiac preload.
    • Pneumoperitoneum significantly increased mean arterial pressure and vascular resistances while reducing CI by approximately 20%.
    • The combined effects led to a ~50% decrease in CI, potentially blunted by isoflurane's vasodilatory properties.

    Conclusions:

    • Laparoscopic cholecystectomy in a head-up position under general anesthesia induces significant hemodynamic changes.
    • Pneumoperitoneum induction is a critical period for these hemodynamic alterations in healthy patients.
    • Anesthesiologists must be aware of these cardiovascular effects to optimize patient management.