title: Postoperative rigidity following fentanyl anesthesia.
mesh_terms: D000758:Anesthesia / Q000009:adverse effects*; D005283:Fentanyl / Q000009:adverse effects* / Q000097:blood; D006801:Humans; D008297:Male; D008875:Middle Aged; D009127:Muscle Rigidity / Q000097:blood / Q000139:chemically induced* / Q000209:etiology; D011183:Postoperative Complications / Q000139:chemically induced
chemical_list: D005283:Fentanyl