Combining the two fentanyl groups revealed further significant benefits from the avoidance of opioids , reducing postoperative nausea and vomiting and nausea prior to discharge from 35 % and 33 % to 22 % and 19 % ( P = 0.049 and P = 0.035 ) , respectively , while nausea in the first 24 h was decreased from 42 % to 27 % ( P = 0.034 ) .
O O O B-ChemicalEntity O O O O O O O O O O O O B-DiseaseOrPhenotypicFeature I-DiseaseOrPhenotypicFeature I-DiseaseOrPhenotypicFeature I-DiseaseOrPhenotypicFeature O B-DiseaseOrPhenotypicFeature O O O O O O O O O O O O O O O O O O O O O O O O O O O O B-DiseaseOrPhenotypicFeature O O O O O O O O O O O O O O O O O O O