Use of pressure waves to confirm the correct placement of epidural needles in dogs

Iff, I; Moens, Y; Schatzmann, U (2007). Use of pressure waves to confirm the correct placement of epidural needles in dogs. Veterinary record, 161(1), pp. 22-5. London: British Veterinary Association 10.1136/vr.161.1.22

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An epidural puncture was performed using the lumbosacral approach in 18 dogs, and the lack of resistance to an injection of saline was used to determine that the needle was positioned correctly. The dogs' arterial blood pressure and epidural pressure were recorded. They were randomly assigned to two groups: in one group an injection of a mixture of local anaesthetic agents was made slowly over 90 seconds and in the other it was made over 30 seconds. After 10 minutes contrast radiography was used to confirm the correct placement of the needle. The mean (sd) initial pressure in the epidural space was 0.1 (0.7) kPa. After the injection the mean maximum epidural pressure in the group injected slowly was 5.5 (2.1) kPa and in the group injected more quickly it was 6.0 (1.9) kPa. At the end of the period of measurement, the epidural pressure in the slow group was 0.8 (0.5) kPa and in the rapid group it was 0.7 (0.5) kPa. Waves synchronous with the arterial pulse wave were observed in 15 of the dogs before the epidural injection, and in all the dogs after the epidural injection.

Item Type:

Journal Article (Original Article)


05 Veterinary Medicine > Department of Clinical Veterinary Medicine (DKV) > DKV - Anaesthesiology

UniBE Contributor:

Schatzmann, Urs




British Veterinary Association




Factscience Import

Date Deposited:

04 Oct 2013 14:57

Last Modified:

05 Dec 2022 14:17

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URI: (FactScience: 51394)

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