Renal blood flow is decreased during pneumoperitoneum compared to controls.

<p>Forest plot of studies comparing renal blood flow in animals undergoing pneumoperitoneum with control animals. Effect size is calculated as standardized mean difference (SMD) in renal blood flow, and corresponding 95% confidence intervals (95%CI). Weights are from random effects analysis. m = duration in minutes of PnP at time of measurement; mmHg = pressure in experimental group.</p>