Electrocardiographic observation in the operating room.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000758:Anesthesia; D000777:Anesthetics / Q000009:adverse effects; D001145:Arrhythmias, Cardiac / Q000139:chemically induced / Q000145:classification / Q000453:epidemiology* / Q000209:etiology; D002318:Cardiovascular Diseases / Q000150:complications; D002648:Child; D002675:Child, Preschool; D004562:Electrocardiography; D006801:Humans; D007223:Infant; D008614:Meperidine / Q000009:adverse effects; D008875:Middle Aged; D008991:Monitoring, Physiologic; D009609:Nitrous Oxide / Q000009:adverse effects; D009873:Operating Rooms; D011229:Preanesthetic Medication; D013514:Surgical Procedures, Operative
D000777:Anesthetics; D008614:Meperidine; D009609:Nitrous Oxide