Morphine synovial fluid concentrations after intravenous regional limb perfusion in horses during standing sedation

被引:0
|
作者
Kilcoyne, Isabelle [1 ]
Nieto, Jorge [1 ]
Nottle, Bridget F. [2 ]
Flynn, Harriet [1 ]
Knych, Heather K. [3 ]
机构
[1] Univ Calif Davis, Sch Vet Med, Dept Surg & Radiol Sci, Davis, CA 95616 USA
[2] Colorado State Univ, Coll Vet Med & Biomed Sci, Dept Clin Sci, Ft Collins, CO USA
[3] Univ Calif Davis, Sch Vet Med, KL Maddy Equine Analyt Chem Lab, Davis, CA USA
关键词
antibiotics; horse; intravenous regional limb perfusion; morphine; opioids; MECHANICAL NOCICEPTIVE THRESHOLD; PALMAR DIGITAL VEINS; INTRAARTICULAR MORPHINE; AMIKACIN CONCENTRATION; PHARMACOKINETICS; PAIN; JOINT; SULFATE; PHARMACODYNAMICS; MANAGEMENT;
D O I
10.1111/evj.14114
中图分类号
S85 [动物医学(兽医学)];
学科分类号
0906 ;
摘要
BackgroundAddition of morphine to the perfusate while performing intravenous regional limb perfusion (IVRLP) may be helpful in treating painful infectious orthopaedic conditions of the distal limb.ObjectivesThe main objective of this study was to determine synovial morphine concentrations following IVRLP with morphine alone or in combination with amikacin.Study designRandomised cross-over in vivo experiment.MethodsSix horses underwent IVRLP with 0.1 mg/kg morphine sulphate diluted to 60 mL using 0.9% NaCl (M group) or combined with 2 g amikacin and 0.9% NaCl (MA group) with a 2-week washout period between treatments. Synovial fluid was collected from the radiocarpal joint (RCJ) at 10, 20, 30, 120, 240, 480, 720 and 1440 min after IVRLP. The tourniquet was removed after the 30-min sample was collected. Synovial concentrations of morphine and major metabolites were measured using liquid chromatography-tandem mass spectrometry. Amikacin concentrations were quantified by a fluorescence polarisation immunoassay.ResultsMeasurable concentrations of morphine were apparent in the RCJ of all horses. Median CMAX of morphine in the M group was 4753.1 (2115.7-14 934.5) ng/mL and 4477 (3434.3-7363) ng/mL in the MA group (p = 0.5). Median CMAX of synovial amikacin was 322.6 (157.5-1371.6 mu g/mL).Main limitationsLimitations include small sample size. Investigators were not blinded to the treatments and a third treatment group where amikacin alone was administered via IVRLP to the study population was not included.ConclusionsIVRLP using morphine is a feasible technique and synovial morphine concentrations were measurable following IVRLP and were not affected when used concurrently with amikacin. Administration of morphine via IVRLP may be beneficial as an analgesic technique for orthopaedic conditions of the distal limb while limiting potential serious systemic side-effects. HintergrundDie Zugabe von Morphin zum Perfusat bei der Durchf & uuml;hrung der intraven & ouml;sen regionalen Extremit & auml;tenperfusion (IVRLP) kann hilfreich sein, um schmerzhafte infekti & ouml;se orthop & auml;dische Zust & auml;nde der distalen Extremit & auml;t zu behandeln.ZieleDas Hauptziel dieser Studie war es, die synovialen Morphin-Konzentrationen nach IVRLP mit Morphin allein oder in Kombination mit Amikacin zu bestimmen.MethodenRandomisierte Crossover-Studie. Sechs Pferde erhielten eine IVRLP mit 0.1 mg/kg Morphinsulfat, verd & uuml;nnt auf 60 mL mit 0.9% NaCl (M-Gruppe) oder kombiniert mit 2 g Amikacin und 0.9% NaCl (MA-Gruppe), mit einer zweiw & ouml;chigen Auswaschperiode zwischen den Behandlungen. Synovialfl & uuml;ssigkeit wurde aus dem Radiokarpalgelenk (RCJ) zu den Zeitpunkten 10, 20, 30, 120, 240, 480, 720 und 1440 Minuten nach IVRLP gesammelt. Der Tourniquet wurde nach der 30 min & uuml;tigen Behandlung entfernt. Die synovialen Konzentrationen von Morphin und dessen Hauptmetaboliten wurden mittels Fl & uuml;ssigkeitschromatographie-Tandem-Massenspektrometrie gemessen. Die Amikacin-Konzentrationen wurden durch ein Fluoreszenzpolarisations-Immunoassay quantifiziert.ResultateMessbare Konzentrationen von Morphin waren im RCJ aller Pferde nachzuweisen. Die mediane CMAX von Morphin in der M-Gruppe betrug 4753.1 (2115.7-14 934.5) ng/mL und 4477 (3434.3-7363) ng/mL in der MA-Gruppe (p = 0.5). Die mediane CMAX von synovialem Amikacin betrug 322.6 (157.5-1371.6 mu g/mL).Wichtigste Einschr & auml;nkungenDie Einschr & auml;nkungen dieser Studie umfassen eine kleine Stichprobengr & ouml;ss e. Die Untersuchenden waren & uuml;ber die Behandlungen nicht verblindet, und eine dritte Behandlungsgruppe, in der Amikacin allein & uuml;ber IVRLP an die Studienpopulation verabreicht wurde, war nicht eingeschlossen.ZusammenfassungIVRLP unter Verwendung von Morphin ist eine durchf & uuml;hrbare Technik, und synoviale Morphin-Konzentrationen waren nach IVRLP messbar und wurden nicht beeinflusst, wenn sie gleichzeitig mit Amikacin verwendet wurden. Die Verabreichung von Morphin & uuml;ber IVRLP k & ouml;nnte als analgetische Technik f & uuml;r orthop & auml;dische Zust & auml;nde der distalen Extremit & auml;t vorteilhaft sein, w & auml;hrend potenziell ernsthafte systemische Nebenwirkungen begrenzt werden.
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页码:502 / 512
页数:11
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