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Computer-controlled infusion of alfentanil versus patient-controlled administration of morphine for postoperative analgesia: a double-blind randomized trial. 1995

M C van den Nieuwenhuyzen, and F H Engbers, and A G Burm, and A A Vletter, and J W van Kleef, and J G Bovill
Department of Anaesthesiology, University Hospital Leiden, The Netherlands.

This study compared the efficacy of computer-controlled infusion of alfentanil (CCiA) with patient-controlled administration of morphine (PCAM) for postoperative analgesia. Twenty patients were randomly allocated to one of the two study groups to receive either an intravenous CCiA or PCAM regimen. Pain scores measured on a visual analog scale (VAS) and the number of valid demands were used as variables to evaluate the efficacy of the postoperative analgesic therapy. In addition, the bias and inaccuracy of the pharmacokinetic data set of alfentanil used in the CCiA program were examined by determining the median performance error (MDPE), and the median absolute performance error (MDAPE). The onset of satisfactory analgesia was faster (P < 0.05) in the CCiA group (median: 20 min) than in the PCAM group (median: 50 min). The total number of demands was lower (21 vs 34, P < 0.05) and the time when the VAS score was > 3.0 was shorter (P < 0.05, 12% of the time) in the CCiA group than in the PCAM group (21% of the time). The MDPE and MDAPE were 8% and 22%, respectively. The maximum alfentanil concentrations associated with pain and the minimum effective analgesic concentrations of alfentanil varied considerably both inter- and intraindividually. In conclusion, compared to a standard intravenous PCAM regimen, a CCiA is faster in onset of analgesia and is as effective in providing postoperative analgesia.

UI MeSH Term Description Entries
D007260 Infusion Pumps Fluid propulsion systems driven mechanically, electrically, or osmotically that are used to inject (or infuse) over time agents into a patient or experimental animal; used routinely in hospitals to maintain a patent intravenous line, to administer antineoplastic agents and other drugs in thromboembolism, heart disease, diabetes mellitus (INSULIN INFUSION SYSTEMS is also available), and other disorders. Drug Infusion Systems,Infusion Pump,Infusion Pumps, External,Infusors,Intravenous Drug Delivery System,Intravenous Drug Delivery Systems,Perfusion Pumps,Pumps, Infusion,Drug Infusion System,External Infusion Pump,External Infusion Pumps,Infusion Pump, External,Infusion System, Drug,Infusion Systems, Drug,Infusor,Perfusion Pump,Pump, External Infusion,Pump, Infusion,Pump, Perfusion,Pumps, External Infusion,Pumps, Perfusion,System, Drug Infusion,Systems, Drug Infusion
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D009020 Morphine The principal alkaloid in opium and the prototype opiate analgesic and narcotic. Morphine has widespread effects in the central nervous system and on smooth muscle. Morphine Sulfate,Duramorph,MS Contin,Morphia,Morphine Chloride,Morphine Sulfate (2:1), Anhydrous,Morphine Sulfate (2:1), Pentahydrate,Oramorph SR,SDZ 202-250,SDZ202-250,Chloride, Morphine,Contin, MS,SDZ 202 250,SDZ 202250,SDZ202 250,SDZ202250,Sulfate, Morphine
D010147 Pain Measurement Scales, questionnaires, tests, and other methods used to assess pain severity and duration in patients or experimental animals to aid in diagnosis, therapy, and physiological studies. Analgesia Tests,Analogue Pain Scale,Formalin Test,McGill Pain Questionnaire,Nociception Tests,Pain Assessment,Pain Intensity,Pain Severity,Tourniquet Pain Test,Visual Analogue Pain Scale,Analog Pain Scale,Assessment, Pain,McGill Pain Scale,Visual Analog Pain Scale,Analgesia Test,Analog Pain Scales,Analogue Pain Scales,Formalin Tests,Intensity, Pain,Measurement, Pain,Nociception Test,Pain Assessments,Pain Intensities,Pain Measurements,Pain Questionnaire, McGill,Pain Scale, Analog,Pain Scale, Analogue,Pain Scale, McGill,Pain Severities,Pain Test, Tourniquet,Questionnaire, McGill Pain,Scale, Analog Pain,Scale, Analogue Pain,Scale, McGill Pain,Severity, Pain,Test, Analgesia,Test, Formalin,Test, Nociception,Test, Tourniquet Pain,Tests, Nociception,Tourniquet Pain Tests
D010149 Pain, Postoperative Pain during the period after surgery. Acute Post-operative Pain,Acute Postoperative Pain,Chronic Post-operative Pain,Chronic Post-surgical Pain,Chronic Postoperative Pain,Chronic Postsurgical Pain,Pain, Post-operative,Persistent Postsurgical Pain,Post-operative Pain,Post-operative Pain, Acute,Post-operative Pain, Chronic,Post-surgical Pain,Postoperative Pain, Acute,Postoperative Pain, Chronic,Postsurgical Pain,Postoperative Pain,Acute Post operative Pain,Chronic Post operative Pain,Chronic Post surgical Pain,Chronic Postsurgical Pains,Pain, Acute Post-operative,Pain, Acute Postoperative,Pain, Chronic Post-operative,Pain, Chronic Post-surgical,Pain, Chronic Postoperative,Pain, Chronic Postsurgical,Pain, Persistent Postsurgical,Pain, Post operative,Pain, Post-surgical,Pain, Postsurgical,Post operative Pain,Post operative Pain, Acute,Post operative Pain, Chronic,Post surgical Pain,Post-operative Pains,Post-surgical Pain, Chronic,Postsurgical Pain, Chronic,Postsurgical Pain, Persistent
D004311 Double-Blind Method A method of studying a drug or procedure in which both the subjects and investigators are kept unaware of who is actually getting which specific treatment. Double-Masked Study,Double-Blind Study,Double-Masked Method,Double Blind Method,Double Blind Study,Double Masked Method,Double Masked Study,Double-Blind Methods,Double-Blind Studies,Double-Masked Methods,Double-Masked Studies,Method, Double-Blind,Method, Double-Masked,Methods, Double-Blind,Methods, Double-Masked,Studies, Double-Blind,Studies, Double-Masked,Study, Double-Blind,Study, Double-Masked
D004360 Drug Therapy, Computer-Assisted Adjunctive computer programs in providing drug treatment to patients. Computer-Assisted Drug Therapy,Protocol Drug Therapy, Computer-Assisted,Therapy, Computer-Assisted Drug,Computer Assisted Drug Therapy,Computer-Assisted Drug Therapies,Drug Therapies, Computer-Assisted,Drug Therapy, Computer Assisted,Protocol Drug Therapy, Computer Assisted,Therapies, Computer-Assisted Drug,Therapy, Computer Assisted Drug
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man

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