Introduction:

The characteristics of robotic surgery can have physiological effects at the pulmonary level that can produce complications.

Objective:

To know the gasometric changes in patients undergoing robotic prostatic resection.

Material and methods:

Thirty patients candidates for robotic prostatic resection were included. Surgical times and arterial blood gas parameters were measured at four times: at the time of induction of anesthesia (basal T), 120 minutes after CO2 insufflation (T2h), at 240 minutes (T.4h) in the capnoperitoneum suspension (final T). A paired Student’s t-test was performed for the variables with normal distribution, and the Mann-Whitney U-test in nonparametric continuous variables was considered a statistical significance of a value of p ≤ 0.05.

Results:

The age was 65.53 ± 5.92 years, the position of Trendelenburg with inclination < 30o was made in 73.3%. The capnoperitoneum ranged from 10-25 mmHg, the surgical time was 326.7 ± 77.4 min. The average increase in PaCO2 was 8.57 mmHg: baseline (31.33 ± 3.7 mmHg) - PaCO2 end (39.9 ± 5 mmHg) p < 0.001. The pH decreased from the second hour on the final measurement 97% had values < 7.35. The values of HCO3 had a decrease of -2.65 mEq/L: basal HCO3 (21.74 + 0.65 mEq/L) - HCO3 end (19.09 + 0.78 mEq/L) p < 0.001. The presence of acidemia was presented in the 73.3%.

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