title: Bradycardia after intravenous fentanyl during subarachnoid anesthesia.
mesh_terms: D000328:Adult; D000775:Anesthesia, Spinal; D001794:Blood Pressure; D001919:Bradycardia / Q000139:chemically induced*; D005260:Female; D005283:Fentanyl / Q000009:adverse effects*; D006339:Heart Rate; D006801:Humans
chemical_list: D005283:Fentanyl