Retrospective clinical evaluation of hypobaric spinal anaesthesia in dogs undergoing pelvic limb orthopaedic surgery

Gennaro, Chiara De; Vettorato, Enzo; Corletto, Federico

doi:10.1111/jsap.12259

Cited by 3 publications

(2 citation statements)

References 23 publications

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“…Como pode ser observado, neste estudo tais alterações cardiovasculares não ocorreram, o que pode ser atribuído ao baixo volume utilizado (0,1±0,01mL/kg) não havendo um bloqueio de segmentos craniais da medula espinhal, mesmo a dose média sendo de 0,3±0,05mg/kg. Ainda, De Gennaro et al (2014) e Sarotti et al (2014) utilizaram em cães associado por via espinhal morfina, o que pode potencializar os efeitos hipotensores e até mesmo aumentar a ascensão do bloqueio anestésico ao longo da medula espinhal intensificando as alterações cardiovasculares. Tarkilla & Isola (1992) e Carpenter et al (1992) correlacionaram a hipotensão da raquianestesia com a utilização de bupivacaína, utilização de opióides, pressão arterial basal menor que 120mmHg, emprego de anestesia geral e adição de fenilefrina ao anestésico local.…”

Section: Resultsunclassified

Eficácia e efeitos hemodinâmicos da anestesia raquidiana com ropivacaína isobárica, hipobárica ou hiperbárica em cães anestesiados com isofluorano

Abimussi

Floriano²,

Wagatsuma³

et al. 2017

Pesq. Vet. Bras.

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The aim of the study was to assess hemodynamic changes and complications of spinal anesthesia with ropivacaine at different baricities. Six beagle dogs aged four years. The dogs were anesthetized with isoflurane and subjected to the following treatments: G hypo = spinal anesthesia with hypobaric ropivacaine (0.5mL of 0.9% NaCl+0.5mL ropivacaine at 0.75%); G iso = isobaric spinal anesthesia (0.5mL of 0,906% NaCl+0.5mL ropivacaine at 0.75%); G hyper = hyperbaric spinal anesthesia (0.5mL of 10% glucose+0.5mL ropivacaine at 0.75%). After induction to anesthesia and maintenance with isoflurane, animals were positioned in right lateral recumbency for pulmonary artery catheterization through the left jugular vein. Spinal anesthesia was carried out with injection of 1mL of local anesthetic using a 22G Quincke tip needle in the L5-L6 space along 1 minute. Dogs were maintained under inhalation anesthesia for 60 minutes in ventral recumbency. HR, F R , MAP, CO, mPAP and body temperature progressively increased in all groups, whereas PCWP increased only in G HYPO at all time points. The TPRI showed significantly higher values in G ISO at M 1 , M 5 and M 10 compared to the other groups, except for M 5 , during which G ISO differed only from G HYPER . The PVRI increased at M 5 compared to M B in G ISO . Side effects such as unilateral motor deficit, bladder atony, excitation, acute pain and chemosis were observed. The hemodynamic changes were not relevant, although inhalation anesthesia with isoflurane might have influenced the results. The changes observed in the study demonstrate that motor blockade is likely to be obtained with isobaric and hyperbaric ropivacaine, thereby confirming the influence of baricity on the type of nerve fibers on the spinal cord. The isobaric solution results in a mixed blockade (motor and sensory blockade). Hemodynamic changes such as hypotension and bradycardia were not evidenced in this study, although local anesthetics were administered in low volumes and 1 Recebido em 21 de janeiro de 2016.Aceito para publicação em 7 de outubro de 2016.

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Section: Resultsunclassified

Eficácia e efeitos hemodinâmicos da anestesia raquidiana com ropivacaína isobárica, hipobárica ou hiperbárica em cães anestesiados com isofluorano

Abimussi

Floriano²,

Wagatsuma³

et al. 2017

Pesq. Vet. Bras.

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“…The prolonged analgesic effect showed in this study by spinal analgesia in cats has been similarly published in dogs. 26 The profound nerve block at the time of surgery, which may limit central sensitisation, 27 and the prolonged analgesic effect of spinal morphine can explain this finding. 28 However, definitive conclusions on the postoperative analgesic effect of SA, as executed in this study, cannot be drawn because the vast majority of our surgical procedures were carried out in a day surgery regime, limiting the postoperative observation time.…”

Section: Discussionmentioning

confidence: 99%

Combined spinal and general anaesthesia in 58 cats undergoing various surgical procedures: description of technique and retrospective perioperative evaluation

Sarotti¹,

Cattai

Franci

2018

Journal of Feline Medicine and Surgery

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Objectives The aim of this retrospective study was to describe the spinal anaesthesia (SA) technique and evaluate the incidence of perioperative complications in cats. Methods The anaesthetic records of cats of American Society of Anaesthesiologists physical status I, II and III, which received general and SA for different surgeries between 2012 and 2016, were examined. SA was administered through a 25 G Quincke needle, using an isobaric solution of bupivacaine and morphine at the level of either the L7–S1 interspaces (sternal recumbency) or the L5–6/L6–7 interspaces (lateral recumbency). Procedural failure rate (PFR), drugs and dose used, heart rate (HR), arterial blood pressure, incidence of bradycardia (HR <100 bpm) and hypotension (mean arterial pressure [MAP] <60 mmHg for at least 5 mins), intraoperative rescue analgesia (iRA) and any other detrimental events and their treatment until discharge were recorded. Abdominal surgery cases were excluded from the intraoperative evaluation. Results A total of 58 anaesthetic records met the inclusion criteria and were analysed. PFR related to the space of injection (L7–S1 vs L5–6/L6–7) was 3/11 (27%) and 1/47 (2%), respectively ( P = 0.017). The total median dose of intrathecal bupivacaine and morphine was 0.8 (range 0.5–1.6 mg/kg) and 0.10 (0.05–0.18 mg/kg), respectively. Nine of 46 (20%) cats received iRA, and no iRA cases were reported with a dose of bupivacaine higher than 0.8 mg/kg. Median HR and MAP before intrathecal injection (T0) and 10 mins after (T1) were, respectively, 118 bpm (range 74–190 bpm) and 106 bpm (67–160 bpm) ( P = 0.005), and 65 mmHg (range 50–94 mmHg) and 52 mmHg (range 35–85 mmHg) ( P = 0.003). Bradycardia was reported in 18/46 (39%) cats and hypotension in 23/46 (50%) cats. No complications were recorded during the observation period. Conclusions and relevance SA was characterised by a low PFR when performed at the L5–6/L6–7 interspaces and low postoperative complications. Hypotension and bradycardia were the most common side effects.

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Ultrasound-guided femoral and obturator nerves block in the psoas compartment in dogs: anatomical and randomized clinical study

Tayari

Tazioli

Breghi

et al. 2017

Veterinary Anaesthesia and Analgesia

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Retrospective clinical evaluation of hypobaric spinal anaesthesia in dogs undergoing pelvic limb orthopaedic surgery

Cited by 3 publications

References 23 publications

Eficácia e efeitos hemodinâmicos da anestesia raquidiana com ropivacaína isobárica, hipobárica ou hiperbárica em cães anestesiados com isofluorano

Eficácia e efeitos hemodinâmicos da anestesia raquidiana com ropivacaína isobárica, hipobárica ou hiperbárica em cães anestesiados com isofluorano

Combined spinal and general anaesthesia in 58 cats undergoing various surgical procedures: description of technique and retrospective perioperative evaluation

Ultrasound-guided femoral and obturator nerves block in the psoas compartment in dogs: anatomical and randomized clinical study

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