2. In studies including surgeries with limited intestinal manipulation, no differences were found in the incidence of PONV when high FiO2 was used. However, there was heterogeneity between studies, in particular among those with low risk of bias.
2. En estudios realizados en cirugías con manipulación intestinal limitada, no se encontraron diferencias en la incidencia de NVPO con el uso de FiO2 altas; sin embargo, existe heterogeneidad entre los estudios, especialmente entre los de bajo riesgo de sesgo.