Fentanyl did reduce minor intraoperative movement but had no sevoflurane-sparing effect and increased respiratory depression , hypotension and bradycardia .
B-ChemicalEntity O O O O O O O O B-ChemicalEntity O O O B-DiseaseOrPhenotypicFeature I-DiseaseOrPhenotypicFeature O B-DiseaseOrPhenotypicFeature O B-DiseaseOrPhenotypicFeature O