[Postoperative pain management after ambulatory surgery.  A survey of anaesthesiologists]. 
Data on practice and quality of postoperative pain treatment by anaesthesiologists after ambulatory surgery are sparse.  The current survey enrolled anaesthesiologists in private practice who were responsible for pain therapy after ambulatory surgery.  The aim of this investigation was to evaluate the implementation of the German S3 guidelines for acute and postoperative pain therapy in the outpatient setting.  A total of 2,156 anaesthesiologists in private practice received a postal questionnaire which was limited to those anaesthesiologists who were responsible for postoperative pain therapy.  The questionnaire included items such as types of surgery, techniques of anaesthesia and analgesic drugs used for pain management during the immediate postoperative phase and for the treatment at home as well as details of pain measurement.  Out of 116 responses 108 could be analyzed covering a total of 86,616 patients receiving postoperative pain therapy, 80% of the operations were performed using general anaesthesia and local anaesthesia was additionally used in 9% of the institutions.  In the perioperative period 66% of the respondents administered non-steroidal-antiinflammatory drugs (NSAIDs), 62% metamizol (dipyrone), 41% paracetamol (acetaminophen) and 73% opioids.  After discharge 81% of the responding anaesthesiologists prescribed NSAIDs, 55% metamizol and 47% opioids for pain relief at home.  Only 40% of the respondents measured and documented pain intensity.  Nearly all respondents (93%) were satisfied with their pain management after outpatient surgery.  Pain therapy after ambulatory surgery significantly varied with respect to the methods, drugs and measures of quality assurance used by anaesthesiologists in private praxis.  This survey demonstrated that the national guidelines of acute pain therapy have only been partially implemented.