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Cardiorespiratory changes in children during laparoscopy
J D Tobias1, G W Holcomb, J W Brock
1Department of Pediatrics, Vanderbilt University, Medical Center N T-0118, Nashville, TN 37232.
Insights
Brief pediatric laparoscopy showed minimal cardiorespiratory changes. Peak inflating pressure and end-tidal CO2 slightly increased but remained within safe limits, requiring no ventilatory adjustments.
Area of Science:
- Pediatric Anesthesiology
- Minimally Invasive Surgery
Background:
- Laparoscopic procedures in children can affect cardiorespiratory parameters.
- Understanding these changes is crucial for safe anesthetic management.
Purpose of the Study:
- To prospectively evaluate cardiorespiratory changes during brief (<15 minutes) pediatric laparoscopy.
- To assess the impact of standardized ventilatory management on these parameters.
Main Methods:
- Prospective study of 55 children undergoing brief laparoscopy.
- Standardized ventilation: tidal volume 12 mL/kg, rate adjusted for end-tidal CO2 (PETCO2) 30-35 mm Hg.
- Continuous monitoring of heart rate, blood pressure, peak inflating pressure (PIP), PETCO2, and oxygen saturation.
Main Results:
- Peak inflating pressure (PIP) increased from 20 +/- 2.5 to 23 +/- 3.2 cm H2O (P < .01).
- End-tidal CO2 (PETCO2) increased from 32 +/- 3.1 to 35 +/- 4.8 mm Hg (P < .01), returning to baseline post-procedure.
- No increase in ventilatory parameters was necessary during the procedures.
Conclusions:
- Brief pediatric laparoscopy is associated with minor, transient cardiorespiratory changes.
- Standardized ventilatory management effectively maintained adequate gas exchange without intervention.
- These findings support the safety of current anesthetic practices for short laparoscopic procedures in children.
Abstract:
The authors prospectively examined the cardiorespiratory changes during brief laparoscopy (less than 15 minutes) in children. Intraoperative ventilatory management included a tidal volume of 12 mL/kg, with the rate adjusted to achieve an end-tidal CO2 (PETCO2) of 30 to 35 mm Hg. The initial rate and tidal volume were not changed during the procedure. Baseline measurements of heart rate, blood pressure, peak inflating pressure (PIP), PETCO2, and oxygen saturation were recorded every minute for 5 minutes before the start of the laparoscopic procedure, and every minute during the laparoscopic procedure. Fifty-five patients were enrolled in the study (age range, 1 month to 7 years; weight range, 5.2 to 31 kg). PIP increased from the baseline value of 20 +/- 2.5 to 23 +/- 3.2 cm H2O (P < .01) during laparoscopy. The increase in PIP was 5 or more in six patients, with a maximum of 7. PETCO2 increased from the baseline value of 32 +/- 3.1 to 35 +/- 4.8 mm Hg (P < .01). The PETCO2 returned to baseline within 10 minutes after completion of the laparoscopy. No increase in ventilatory parameters was required during the brief laparoscopic procedure.