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Figure 57-2
Ventilatory changes (pH, PaCO2
,
and PETCO2
) during carbon dioxide pneumoperitoneum
for laparoscopic cholecystectomy. For 13 American Society of Anesthesiologists (ASA)
class I and II patients, minute ventilation was kept constant at 100 mL/kg/min with
a respiratory rate of 12 per minute during the study. Intra-abdominal pressure was
14 mm Hg. Data are given as the mean ± SEM.*, P
< .05 compared with time 0.
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