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The Cardiopulmonary Effects of Placing Fentanyl or Medetomidine in the Lumbosacral Epidural Space of Isoflurane‐Anesthetized Cats
Author(s) -
DUKE TANYA,
COX ANNAMARIA KOMULAINEN,
REMEDIOS AUDREY M.,
CRIBB PETER H.
Publication year - 1994
Publication title -
veterinary surgery
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.652
H-Index - 79
eISSN - 1532-950X
pISSN - 0161-3499
DOI - 10.1111/j.1532-950x.1994.tb00460.x
Subject(s) - medicine , medetomidine , isoflurane , anesthesia , fentanyl , cats , epidural space , lumbosacral joint , surgery , heart rate , blood pressure
The cardiopulmonary effects of fentanyl (4 μg/kg) or medetomidine (10 μg/kg) in saline injected epidurally were measured for 2 hours in 15 isoflurane (2.4%)‐anesthetized cats. One milliliter of saline without drug was used to control for saline and volume of injection. Baseline was taken as preinjection time 0. Medetomidine significantly increased ( P < .05) mean arterial blood pressure (MAP) 5 to 20 minutes postinjection (PI) compared with baseline. MAP significantly decreased 30 to 120 minutes PI compared with baseline. Fentanyl significantly decreased MAP 5 to 120 minutes PI compared with baseline. Heart rate and respiratory rates significantly decreased in the medetomidine and fentanyl groups 5 to 120 minutes PI compared with baseline. Arterial pCO 2 significantly increased while arterial pH significantly decreased 15 to 120 minutes PI in the fentanyl and medetomidine groups compared with baseline. Blood bicarbonate concentration significantly increased 90 to 120 minutes PI in the medetomidine group compared with baseline.