Comparison between Bilateral Ultrasound-Guided Quadratus Lumborum Block and Sacrococcygeal Epidural in Cats Undergoing Ovariectomy

Ultrasound-guided quadratus lumborum block (QLB) and sacrococcygeal epidural anaesthesia (ScE) have been used for neutering cats, providing effective pain relief. To compare the effects of the QLB with those of ScE in cats undergoing ovariectomies. Feral cats undergoing ovariectomy were premedicated...

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Bibliographic Details
Published in:Veterinary sciences 2024-01, Vol.11 (1), p.25
Main Authors: Dos-Santos, José Diogo, Ginja, Mário, Martins, João, Cabral, Patrícia, Alves-Pimenta, Sofia, Ribeiro, Lénio, Otero, Pablo E, Colaço, Bruno
Format: Article
Language:English
Subjects:
Abdomen
Analgesia
Anesthesia
Animals
Blood pressure
Bupivacaine
Cadavers
Care and treatment
cat
Cats
Epidural
Extubation
Feral populations
General anesthesia
Heart beat
Heart rate
Hypotension
Hypotheses
Isoflurane
Methadone
Oophorectomy
Ovariectomy
Pain
Pain perception
Propofol
quadratus lumborum block
regional analgesia
Regional anesthesia
Respiration
sacrococcygeal epidural
Skin
Ultrasonic imaging
Ultrasound
Vertebrae
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Summary:Ultrasound-guided quadratus lumborum block (QLB) and sacrococcygeal epidural anaesthesia (ScE) have been used for neutering cats, providing effective pain relief. To compare the effects of the QLB with those of ScE in cats undergoing ovariectomies. Feral cats undergoing ovariectomy were premedicated with dexmedetomidine (20 μg kg ) and methadone (0.2 mg kg ) intramuscularly. Anaesthesia was induced with 2-4 mg kg of propofol intravenously and maintained with isoflurane in oxygen. The cats were randomly allocated to the groups QLB (bilateral QLB with 0.4 mL kg of 0.25% bupivacaine) and ScE (0.3 mL kg of 0.25% bupivacaine). Hemodynamic data and analgesia rescue were collected at four intraoperative periods. The pain scale and motor block were assessed in both groups during the postoperative period. The ScE results in increased hypotension, prolonged extubation time, and higher postoperative motor block than the QLB ( < 0.05). The QLB and ScE groups required a similar number of intraoperative rescues and presented the same postoperative pain scale classification. The QLB with 0.25% bupivacaine is a potential alternative to ScE with 0.25% bupivacaine in perioperative pain management in elective cat ovariectomy. The QLB promoted less hypotension and postoperative motor block when compared with the ScE group.
ISSN:2306-7381
2306-7381
DOI:10.3390/vetsci11010025