Development of an ultrasound-guided technique for pudendal nerve block in cat cadavers.

Adami, Chiara; Angeli, Giovanni; Haenssgen, Kati; Stoffel, Michael Hubert; Spadavecchia, Claudia (2013). Development of an ultrasound-guided technique for pudendal nerve block in cat cadavers. Journal of feline medicine and surgery, 15(10), pp. 901-907. Sage 10.1177/1098612X13485482

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The objective of this prospective experimental cadaveric study was to develop an ultrasound-guided technique to perform an anaesthetic pudendal nerve block in male cats. Fifteen fresh cadavers were used for this trial. A detailed anatomical dissection was performed on one cat in order to scrutinise the pudendal nerve and its ramifications. In a second step, the cadavers of six cats were used to test three different ultrasonographic approaches to the pudendal nerve: the deep dorso-lateral, the superficial dorso-lateral and the median transperineal. Although none of the approaches allowed direct ultrasonographical identification of the pudendal nerve branches, the deep dorso-lateral was found to be the most advantageous one in terms of practicability and ability to identify useful and reliable landmarks. Based on these findings, the deep dorso-lateral approach was selected as technique of choice for tracer injections (0.1 ml 1% methylene blue injected bilaterally) in six cat cadavers distinct from those used for the ultrasonographical study. Anatomical dissection revealed a homogeneous spread of the tracer around the pudendal nerve sensory branches in all six cadavers. Finally, computed tomography was performed in two additional cadavers after injection of 0.3 ml/kg (0.15 ml/kg per each injection sites, left and right) contrast medium through the deep dorso-lateral approach in order to obtain a model of volume distribution applicable to local anaesthetics. Our findings in cat cadavers indicate that ultrasound-guided pudendal nerve block is feasible and could be proposed to provide peri-operative analgesia in clinical patients undergoing perineal urethrostomy.

Item Type:	Journal Article (Original Article)
Division/Institute:	05 Veterinary Medicine > Research Foci > NeuroCenter 05 Veterinary Medicine > Department of Clinical Veterinary Medicine (DKV) 05 Veterinary Medicine > Department of Clinical Research and Veterinary Public Health (DCR-VPH) > Veterinary Anatomy 05 Veterinary Medicine > Department of Clinical Research and Veterinary Public Health (DCR-VPH) 05 Veterinary Medicine > Department of Clinical Veterinary Medicine (DKV) > DKV - Anaesthesiology
UniBE Contributor:	Adami, Chiara, Stoffel, Michael Hubert, Spadavecchia, Claudia
Subjects:	500 Science > 570 Life sciences; biology 600 Technology > 630 Agriculture
ISSN:	1098-612X
Publisher:	Sage
Language:	English
Submitter:	Susanne Portner
Date Deposited:	16 Jul 2014 16:06
Last Modified:	05 Dec 2022 14:30
Publisher DOI:	10.1177/1098612X13485482
PubMed ID:	23599255
URI:	https://boris.unibe.ch/id/eprint/44627