Postoperative analgesic and cardiopulmonary effects in dogs of oxymorphone administered epidurally and intramuscularly, and medetomidine administered epidurally: a comparative clinical study. 1996

N Vesal, and P H Cribb, and M Frketic
Department of Veterinary Anesthesiology, Radiology and Surgery, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Canada.

Thirty dogs undergoing pelvic or hindlimb orthopedic surgery were each administered one of the following postoperative treatments: intramuscular oxymorphone 0.15 mg/kg (OIM) (n = 10); epidural oxymorphone 0.05 mg/kg, (OEP) (n = 10); or epidural medetomidine, 0.015 mg/kg (MEP) (n = 10). Heart rate (HR), respiratory rate (RR), and arterial blood pressure were measured before drug injection and 15, 30, 60, 90, 120, 180, 240, 300, 360, 420, and 480 minutes postinjection (PI). Arterial blood gas analysis was performed before and 15, 30, 60, 90, 120, 180, 360, and 480 minutes PI. The duration of analgesia with OEP, 7.62 + 0.30 hours (mean +/- SEM), and MEP, 7.06 + 0.50 hours, was significantly (P < .05) longer than the 4.91 + 0.44 hours obtained with OIM. All treatments resulted in a significant decrease in HR. Four dogs receiving epidural medetomidine each had second degree atrioventricular (AV) block associated with sinus arrhythmia for a brief period during the first 20 minutes after injection. There was no significant difference in arterial blood pressure between OIM and OEP but arterial blood pressure was significantly higher with MEP than with OIM. MEP can provide analgesia comparable with OEP, but bradycardia and second degree AV block will develop in some cases.

UI MeSH Term Description Entries
D007093 Imidazoles Compounds containing 1,3-diazole, a five membered aromatic ring containing two nitrogen atoms separated by one of the carbons. Chemically reduced ones include IMIDAZOLINES and IMIDAZOLIDINES. Distinguish from 1,2-diazole (PYRAZOLES).
D007268 Injections, Epidural The injection of drugs, most often analgesics, into the spinal canal without puncturing the dura mater. Epidural Injections,Extradural Injections,Peridural Injections,Injections, Extradural,Injections, Peridural,Epidural Injection,Extradural Injection,Injection, Epidural,Injection, Extradural,Injection, Peridural,Peridural Injection
D007273 Injections, Intramuscular Forceful administration into a muscle of liquid medication, nutrient, or other fluid through a hollow needle piercing the muscle and any tissue covering it. Intramuscular Injections,Injection, Intramuscular,Intramuscular Injection
D008297 Male Males
D009985 Orthopedics A specialty which utilizes medical, surgical, and physical methods to treat and correct deformities, diseases, and injuries to the skeletal system, its articulations, and associated structures.
D010111 Oxymorphone An opioid analgesic with actions and uses similar to those of MORPHINE, apart from an absence of cough suppressant activity. It is used in the treatment of moderate to severe pain, including pain in obstetrics. It may also be used as an adjunct to anesthesia. (From Martindale, The Extra Pharmacopoeia, 30th ed, p1092) Numorphan,Opana,Oxymorphone HCl,Oxymorphone Hydrochloride
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
D010388 Pelvis The space or compartment surrounded by the pelvic girdle (bony pelvis). It is subdivided into the greater pelvis and LESSER PELVIS. The pelvic girdle is formed by the PELVIC BONES and SACRUM. Pelvic Region,Region, Pelvic
D011182 Postoperative Care The period of care beginning when the patient is removed from surgery and aimed at meeting the patient's psychological and physical needs directly after surgery. (From Dictionary of Health Services Management, 2d ed) Care, Postoperative,Postoperative Procedures,Procedures, Postoperative,Postoperative Procedure,Procedure, Postoperative
D012119 Respiration The act of breathing with the LUNGS, consisting of INHALATION, or the taking into the lungs of the ambient air, and of EXHALATION, or the expelling of the modified air which contains more CARBON DIOXIDE than the air taken in (Blakiston's Gould Medical Dictionary, 4th ed.). This does not include tissue respiration ( Breathing

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