Abstract
Objective: To determine the effect of fentanyl on the induction dose and minimum infusion rate of alfaxalone required to prevent movement in response to a noxious stimulus (MIRNM) in dogs. Study design: Experimental crossover design. Animals: A group of six healthy, adult, intact female mixed-breed dogs, weighing 19.7 ± 1.3 kg. Methods: Dogs were randomly administered one of three treatments at weekly intervals: premedication with 0.9% saline (treatment A), fentanyl 5 μg kg–1 (treatment ALF) or fentanyl 10 μg kg–1 (treatment AHF), administered intravenously over 5 minutes. Anesthesia was induced 5 minutes later with incremental doses of alfaxalone to achieve intubation and was maintained for 90 minutes in A with alfaxalone (0.12 mg kg–1 minute–1), in ALF with alfaxalone (0.09 mg kg–1 minute–1) and fentanyl (0.1 μg kg–1 minute–1) and in AHF with alfaxalone (0.06 mg kg–1 minute–1) and fentanyl (0.2 μg kg–1 minute–1). The alfaxalone infusion was increased or decreased by 0.006 mg kg–1 minute–1 based on positive or negative response to antebrachium stimulation (50 V, 50 Hz, 10 ms). Data were analyzed using a mixed-model ANOVA and presented as least squares means ± standard error. Results: Alfaxalone induction doses were 3.50 ± 0.13 (A), 2.17 ± 0.10 (ALF) and 1.67 ± 0.10 mg kg–1 (AHF) and differed among treatments (p < 0.05). Alfaxalone MIRNM was 0.17 ± 0.01 (A), 0.10 ± 0.01 (ALF) and 0.07 ± 0.01 mg kg–1 minute–1 (AHF) and differed among treatments. ALF and AHF decreased the MIRNM by 44 ± 8% and 62 ± 5%, respectively (p < 0.05). Plasma alfaxalone concentrations at MIRNM were 5.82 ± 0.48 (A), 4.40 ± 0.34 (ALF) and 2.28 ± 0.09 μg mL–1 (AHF). Conclusions and clinical relevance: Fentanyl, at the doses studied, significantly decreased the alfaxalone induction dose and MIRNM.
| Original language | English (US) |
|---|---|
| Journal | Veterinary Anaesthesia and Analgesia |
| DOIs | |
| State | Accepted/In press - Jan 1 2018 |
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Keywords
- alfaxalone
- anesthesia
- dogs
- fentanyl
- minimum infusion rate
ASJC Scopus subject areas
- veterinary(all)
Cite this
Effect of fentanyl on the induction dose and minimum infusion rate of alfaxalone preventing movement in dogs. / Bennett, Katherine J.; Seddighi, Reza; Moorhead, Kaitlin A.; Messenger, Kristin; Cox, Sherry K.; Sun, Xiaocun; Pasloske, Kirby; Pypendop, Bruno H; Doherty, Thomas J.
In: Veterinary Anaesthesia and Analgesia, 01.01.2018.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effect of fentanyl on the induction dose and minimum infusion rate of alfaxalone preventing movement in dogs
AU - Bennett, Katherine J.
AU - Seddighi, Reza
AU - Moorhead, Kaitlin A.
AU - Messenger, Kristin
AU - Cox, Sherry K.
AU - Sun, Xiaocun
AU - Pasloske, Kirby
AU - Pypendop, Bruno H
AU - Doherty, Thomas J.
PY - 2018/1/1
Y1 - 2018/1/1
N2 - Objective: To determine the effect of fentanyl on the induction dose and minimum infusion rate of alfaxalone required to prevent movement in response to a noxious stimulus (MIRNM) in dogs. Study design: Experimental crossover design. Animals: A group of six healthy, adult, intact female mixed-breed dogs, weighing 19.7 ± 1.3 kg. Methods: Dogs were randomly administered one of three treatments at weekly intervals: premedication with 0.9% saline (treatment A), fentanyl 5 μg kg–1 (treatment ALF) or fentanyl 10 μg kg–1 (treatment AHF), administered intravenously over 5 minutes. Anesthesia was induced 5 minutes later with incremental doses of alfaxalone to achieve intubation and was maintained for 90 minutes in A with alfaxalone (0.12 mg kg–1 minute–1), in ALF with alfaxalone (0.09 mg kg–1 minute–1) and fentanyl (0.1 μg kg–1 minute–1) and in AHF with alfaxalone (0.06 mg kg–1 minute–1) and fentanyl (0.2 μg kg–1 minute–1). The alfaxalone infusion was increased or decreased by 0.006 mg kg–1 minute–1 based on positive or negative response to antebrachium stimulation (50 V, 50 Hz, 10 ms). Data were analyzed using a mixed-model ANOVA and presented as least squares means ± standard error. Results: Alfaxalone induction doses were 3.50 ± 0.13 (A), 2.17 ± 0.10 (ALF) and 1.67 ± 0.10 mg kg–1 (AHF) and differed among treatments (p < 0.05). Alfaxalone MIRNM was 0.17 ± 0.01 (A), 0.10 ± 0.01 (ALF) and 0.07 ± 0.01 mg kg–1 minute–1 (AHF) and differed among treatments. ALF and AHF decreased the MIRNM by 44 ± 8% and 62 ± 5%, respectively (p < 0.05). Plasma alfaxalone concentrations at MIRNM were 5.82 ± 0.48 (A), 4.40 ± 0.34 (ALF) and 2.28 ± 0.09 μg mL–1 (AHF). Conclusions and clinical relevance: Fentanyl, at the doses studied, significantly decreased the alfaxalone induction dose and MIRNM.
AB - Objective: To determine the effect of fentanyl on the induction dose and minimum infusion rate of alfaxalone required to prevent movement in response to a noxious stimulus (MIRNM) in dogs. Study design: Experimental crossover design. Animals: A group of six healthy, adult, intact female mixed-breed dogs, weighing 19.7 ± 1.3 kg. Methods: Dogs were randomly administered one of three treatments at weekly intervals: premedication with 0.9% saline (treatment A), fentanyl 5 μg kg–1 (treatment ALF) or fentanyl 10 μg kg–1 (treatment AHF), administered intravenously over 5 minutes. Anesthesia was induced 5 minutes later with incremental doses of alfaxalone to achieve intubation and was maintained for 90 minutes in A with alfaxalone (0.12 mg kg–1 minute–1), in ALF with alfaxalone (0.09 mg kg–1 minute–1) and fentanyl (0.1 μg kg–1 minute–1) and in AHF with alfaxalone (0.06 mg kg–1 minute–1) and fentanyl (0.2 μg kg–1 minute–1). The alfaxalone infusion was increased or decreased by 0.006 mg kg–1 minute–1 based on positive or negative response to antebrachium stimulation (50 V, 50 Hz, 10 ms). Data were analyzed using a mixed-model ANOVA and presented as least squares means ± standard error. Results: Alfaxalone induction doses were 3.50 ± 0.13 (A), 2.17 ± 0.10 (ALF) and 1.67 ± 0.10 mg kg–1 (AHF) and differed among treatments (p < 0.05). Alfaxalone MIRNM was 0.17 ± 0.01 (A), 0.10 ± 0.01 (ALF) and 0.07 ± 0.01 mg kg–1 minute–1 (AHF) and differed among treatments. ALF and AHF decreased the MIRNM by 44 ± 8% and 62 ± 5%, respectively (p < 0.05). Plasma alfaxalone concentrations at MIRNM were 5.82 ± 0.48 (A), 4.40 ± 0.34 (ALF) and 2.28 ± 0.09 μg mL–1 (AHF). Conclusions and clinical relevance: Fentanyl, at the doses studied, significantly decreased the alfaxalone induction dose and MIRNM.
KW - alfaxalone
KW - anesthesia
KW - dogs
KW - fentanyl
KW - minimum infusion rate
UR - http://www.scopus.com/inward/record.url?scp=85058212532&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85058212532&partnerID=8YFLogxK
U2 - 10.1016/j.vaa.2018.10.006
DO - 10.1016/j.vaa.2018.10.006
M3 - Article
C2 - 30554890
AN - SCOPUS:85058212532
JO - Veterinary Anaesthesia and Analgesia
JF - Veterinary Anaesthesia and Analgesia
SN - 1467-2987
ER -