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The effect of clonidine on intra-operative requirements of fentanyl during combined epidural/general anaesthesia. 1994

G Murga, and E Samsó, and J Valles, and P Casanovas, and M M Puig
Anaesthesiology Service, Hospital de Figueres, Spain.

The study evaluates the analgesic effects of epidural clonidine in patients undergoing abdominal hysterectomy under combined epidural/general anaesthesia. Forty ASA 1-2 patients were divided into two groups who received epidurally either clonidine 300 micrograms (group 1) or placebo (group 2). Anaesthesia was maintained with oxygen/nitrous oxide, a midazolam infusion, vecuronium, and boluses of fentanyl 100 micrograms administered as needed to maintain cardiovascular stability. The mean (SD) intraoperative fentanyl requirements were 2.05 (0.18) and 3.66 (0.3) micrograms.kg-1.h-1 for groups 1 and 2 respectively (p < 0.001). Patients in Group 1 had a lower heart rate after tracheal intubation and surgical incision (p < 0.02). In the recovery room, pain intensity was lower in group 1 (p < 0.003) and the mean (SD) time until analgesia request was increased from 48.5 (8.4) min in group 2 to 235.7 (33.2) min in group 1 (p < 0.001). Our results demonstrate that epidural clonidine produces decreased fentanyl requirements, improved cardiovascular stability, reduced pain intensity and effective postoperative analgesia in the recovery room.

UI MeSH Term Description Entries
D007044 Hysterectomy Excision of the uterus. Hysterectomies
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
D003000 Clonidine An imidazoline sympatholytic agent that stimulates ALPHA-2 ADRENERGIC RECEPTORS and central IMIDAZOLINE RECEPTORS. It is commonly used in the management of HYPERTENSION. Catapres,Catapresan,Catapressan,Chlophazolin,Clofelin,Clofenil,Clonidine Dihydrochloride,Clonidine Hydrochloride,Clonidine Monohydrobromide,Clonidine Monohydrochloride,Clopheline,Dixarit,Gemiton,Hemiton,Isoglaucon,Klofelin,Klofenil,M-5041T,ST-155,Dihydrochloride, Clonidine,Hydrochloride, Clonidine,M 5041T,M5041T,Monohydrobromide, Clonidine,Monohydrochloride, Clonidine,ST 155,ST155
D004305 Dose-Response Relationship, Drug The relationship between the dose of an administered drug and the response of the organism to the drug. Dose Response Relationship, Drug,Dose-Response Relationships, Drug,Drug Dose-Response Relationship,Drug Dose-Response Relationships,Relationship, Drug Dose-Response,Relationships, Drug Dose-Response
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
D005260 Female Females
D005283 Fentanyl A potent narcotic analgesic, abuse of which leads to habituation or addiction. It is primarily a mu-opioid agonist. Fentanyl is also used as an adjunct to general anesthetics, and as an anesthetic for induction and maintenance. (From Martindale, The Extra Pharmacopoeia, 30th ed, p1078) Phentanyl,Duragesic,Durogesic,Fentanest,Fentanyl Citrate,Fentora,R-4263,Sublimaze,Transmucosal Oral Fentanyl Citrate,R 4263,R4263
D006339 Heart Rate The number of times the HEART VENTRICLES contract per unit of time, usually per minute. Cardiac Rate,Chronotropism, Cardiac,Heart Rate Control,Heartbeat,Pulse Rate,Cardiac Chronotropy,Cardiac Chronotropism,Cardiac Rates,Chronotropy, Cardiac,Control, Heart Rate,Heart Rates,Heartbeats,Pulse Rates,Rate Control, Heart,Rate, Cardiac,Rate, Heart,Rate, Pulse
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults

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