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Cambruzzi M, Oostrom H, Deutsch J. Cheyne–Stokes respiration in two sheep during recovery from general anaesthesia for experimental convection enhanced drug delivery. VETERINARY RECORD CASE REPORTS 2022. [DOI: 10.1002/vrc2.233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Martina Cambruzzi
- Anaesthesia Department, Langford Veterinary Referral Hospital University of Bristol Langford UK
| | | | - Julia Deutsch
- Anaesthesia Department, Langford Veterinary Referral Hospital University of Bristol Langford UK
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Hansford J, Henao-Guerrero N, Machado ML, Pypendop BH. Pharmacokinetics of a high-concentration formulation of buprenorphine (Simbadol) in male dogs. Vet Anaesth Analg 2021; 48:509-516. [PMID: 34059460 DOI: 10.1016/j.vaa.2021.04.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 04/19/2021] [Accepted: 04/20/2021] [Indexed: 10/21/2022]
Abstract
OBJECTIVE To describe the pharmacokinetics of buprenorphine in dogs following administration of a high-concentration formulation of buprenorphine. STUDY DESIGN Prospective, randomized, crossover study. ANIMALS A total of six healthy male intact Beagle dogs, aged 9-13 months and weighing 10.3 ± 1.4 kg (mean ± standard deviation). METHODS Dogs were randomized to be administered buprenorphine (0.12 mg kg-1; Simbadol, 1.8 mg mL-1) via the intravenous (lateral saphenous) or subcutaneous (dorsal interscapular) route followed by the alternative route of administration after a 14 day interval. Blood was sampled before administration and at set times up to 72 hours after injection. Plasma buprenorphine concentration was measured using liquid chromatography-tandem mass spectrometry. RESULTS A three-compartment model with zero or biphasic rapid and slow first-order input in (intravenous or subcutaneous data, respectively) and first-order elimination from the central compartment best fitted the data. The rapid first-order input accounted for 63% of the dosage absorption. Typical values (% interindividual variability) for the three compartment volumes were 900 (33), 2425 (not estimated) and 6360 (28) mL kg-1. The metabolic and two distribution clearances were 25.7 (21), 107.5 (74) and 5.7 (61) mL minute-1 kg-1. The absorption half-life for the fast absorption phase was 8.9 minutes with a 0.7 (103) minute delay. The absorption half-life for the slow absorption phase was 347 minutes with a 226 (42) minute delay. Median (range) bioavailability calculated from noncompartmental analysis was 143 (80-239)%. Calculated terminal half-life was 963 minutes. CONCLUSIONS AND CLINICAL RELEVANCE The high-concentration formulation of buprenorphine administered subcutaneously had a large volume of distribution and a rapid absorption phase followed by slower, delayed absorption. The high estimate of bioavailability should be interpreted with caution as values above 100% are most commonly related to experimental issues.
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Affiliation(s)
- Jeremy Hansford
- Department of Small Animal Clinical Sciences, Virginia Maryland College of Veterinary Medicine, Blacksburg, VA, USA
| | - Natalia Henao-Guerrero
- Department of Small Animal Clinical Sciences, Virginia Maryland College of Veterinary Medicine, Blacksburg, VA, USA
| | - Marcela L Machado
- William R Pritchard Veterinary Medical Teaching Hospital, School of Veterinary Medicine, University of California-Davis, Davis, CA, USA
| | - Bruno H Pypendop
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California-Davis, Davis, CA, USA.
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Steagall PV, Ruel HLM, Yasuda T, Monteiro BP, Watanabe R, Evangelista MC, Beaudry F. Pharmacokinetics and analgesic effects of intravenous, intramuscular or subcutaneous buprenorphine in dogs undergoing ovariohysterectomy: a randomized, prospective, masked, clinical trial. BMC Vet Res 2020; 16:154. [PMID: 32448336 PMCID: PMC7245774 DOI: 10.1186/s12917-020-02364-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 05/10/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Buprenorphine is used for canine postoperative pain management. This study aimed to describe the pharmacokinetics and evaluate the analgesic efficacy of buprenorphine (Simbadol, 1.8 mg/mL) administered by different routes in dogs undergoing ovariohysterectomy. Twenty-four dogs were included in a randomized, prospective, masked, clinical trial. Buprenorphine (0.02 mg/kg) was administered intravenously (IV), intramuscularly (IM) or subcutaneously (SC) (n = 8/group) 0.5 h before general anesthesia with propofol-isoflurane. Carprofen (4.4 mg/kg SC) was administered after anesthetic induction and before ovariohysterectomy. Pain was scored using the short-form Glasgow composite pain scale for dogs (SF-GCPS). Dogs were administered morphine (0.25 mg/kg IV) when SF-GCPS scores were ≥ 5/20. Blood sampling was performed up to 720 min after drug administration. Plasma buprenorphine and norbuprenorphine concentrations were analyzed using liquid chromatography mass spectrometry. Pharmacokinetics of buprenorphine was described using a non-compartmental model (PK Solver 2.0). Statistical analysis was performed using linear mixed models and Fisher's exact test (p < 0.05). RESULTS Pain scores were significantly higher than baseline after IV (0.5-2 h), IM (0.5-3 h) and SC (0.5-4 h) but not among groups. Prevalence of rescue analgesia was significantly higher in SC (7/8 dogs) than IV (2/8) but not different between IV and IM (3/8) or IM and SC. The frequency of rescue analgesia was not significantly different among groups (IV = 2, IM = 5 and SC = 9). Norbuprenorphine was not detected. For IV, IM and SC administration, clearance was 1.29, 1.65 and 1.40 L/hour/kg, volume of distribution was 6.8, 14.2 and 40.1 L/kg, the elimination half-life was 3.7, 5.7, 22 h, and the area under the plasma concentration-time curved extrapolated to infinity was 15.7, 12.4 and 16.4 ng/mL/hour, respectively. Bioavailability for IM and SC was 62.6 and 40%, respectively. Maximum plasma concentrations of buprenorphine were 6.2 and 1.3 ng/mL at 0.14 and 0.33 h after IM and SC administration, respectively. CONCLUSIONS The route of administration influences the analgesic efficacy of buprenorphine in dogs. SC administration of buprenorphine failed to provide clinical analgesia due to erratic drug absorption. At the doses administered, the IV and IM routes are preferred for postoperative analgesia.
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Affiliation(s)
- Paulo Vinicius Steagall
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada. .,Diplomate American College of Veterinary Anesthesia and Analgesia, 3200 rue Sicotte, Saint-Hyacinthe, QC, J2S 2M2, Canada.
| | - Hélène Louise Marcelle Ruel
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada
| | - Tomoyo Yasuda
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada
| | - Beatriz Paglerani Monteiro
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada
| | - Ryota Watanabe
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada
| | - Marina Cayetano Evangelista
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada
| | - Francis Beaudry
- Department of Veterinary Biomedical Sciences, Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada
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Katzenbach JE, Wittenburg LA, Allweiler SI, Gustafson DL, Johnston MS. PHARMACOKINETICS OF SINGLE-DOSE BUPRENORPHINE, BUTORPHANOL, AND HYDROMORPHONE IN THE DOMESTIC FERRET ( MUSTELA PUTORIUS FURO ). J Exot Pet Med 2018. [DOI: 10.1053/j.jepm.2018.02.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Barbarossa A, Rambaldi J, Giunti M, Zaghini A, Cunto M, Zambelli D, Valgimigli S, Santoro F, Romagnoli N. Pharmacokinetics of buprenorphine following constant rate infusion for postoperative analgesia in dogs undergoing ovariectomy. Vet Anaesth Analg 2017; 44:435-443. [DOI: 10.1016/j.vaa.2016.05.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 04/16/2016] [Accepted: 05/03/2016] [Indexed: 10/20/2022]
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Morphine and buprenorphine do not alter leukocyte cytokine production capacity, early apoptosis, or neutrophil phagocytic function in healthy dogs. Res Vet Sci 2015; 99:70-6. [DOI: 10.1016/j.rvsc.2015.01.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2014] [Revised: 12/18/2014] [Accepted: 01/16/2015] [Indexed: 02/06/2023]
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Queiroz-Williams P, Egger CM, Qu W, Rohrbach BW, Doherty T. The effect of buprenorphine on isoflurane minimum alveolar concentration in dogs. Vet Anaesth Analg 2014. [DOI: 10.1111/vaa.12115] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Messenger KM, Davis JL, LaFevers DH, Barlow BM, Posner LP. Intravenous and sublingual buprenorphine in horses: pharmacokinetics and influence of sampling site. Vet Anaesth Analg 2011; 38:374-84. [DOI: 10.1111/j.1467-2995.2011.00613.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Pieper K, Schuster T, Levionnois O, Matis U, Bergadano A. Antinociceptive efficacy and plasma concentrations of transdermal buprenorphine in dogs. Vet J 2011; 187:335-41. [DOI: 10.1016/j.tvjl.2010.01.013] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2009] [Revised: 01/12/2010] [Accepted: 01/21/2010] [Indexed: 10/19/2022]
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Ko JC, Freeman LJ, Barletta M, Weil AB, Payton ME, Johnson BM, Inoue T. Efficacy of oral transmucosal and intravenous administration of buprenorphine before surgery for postoperative analgesia in dogs undergoing ovariohysterectomy. J Am Vet Med Assoc 2011; 238:318-28. [DOI: 10.2460/javma.238.3.318] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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