Somatosensory evoked potentials and sensory nerve conduction velocities in the thoracic limb of mallard ducks (Anas platyrhynchos)

Abstract

Measurement of radial and ulnar SNCV or CDP is feasible in isoflurane-anesthetized mallard ducks. The CDP accurately reflects sensory nerve conduction through the brachial plexus. Assessment of brachial plexus function in mallard ducks via evaluations of SNCVs and CDPs may have application for diagnosis of traumatic injuries to the brachial plexus, evaluation of neuropathies associated with exposure to toxic chemicals, and assessment of the efficacy of interventions such as brachial plexus nerve blockade.

Evaluation of lumbosacral nerve root conduction in chickens by electrophysiological testing including high-resolution spinal magnetic stimulation

“…The experimental setup for assessment of sensory impulse conduction was based on recommendations made for chickens, ducks and turkeys as well as dogs and cats to measure sensory nerve conduction velocity (SNCV) (Cuddon et al, 1999), lumbar and thoracic cord dorsum potentials (Besalti et al, 2007;Brenner et al, 2008;Cuddon et al, 1999), and cortical SSEPs (Besalti et al, 2007;Gregory and Wotton, 1989;Machida et al, 1994;Mouchoniere et al, 2000;Uzuka et al, 1987). Signals were consistently recordable from the following sites: (1) the scalp, (2) the interarcuate gap between the last cervical and first thoracic vertebrae and (3) the synsacrum, whereas no potentials could be recorded from the sciatic nerve.…”

“…Unfortunately, there still is a considerable lack of electrophysiologic data on age and breed dependent variables in normal chickens even though some basic investigations for chickens and/or other avian species have been carried out, including establishment of electrodiagnostic techniques to measure motor nerve conduction velocity (MNCV) (Bagley et al, 1995;Bagley et al, 1992;Kornegay et al, 1983b;Maguire et al, 1998;Massicotte et al, 2001;Platt et al, 1999), F waves (Bagley et al, 1993), sensory nerve conduction velocity (SNCV) (Brenner et al, 2008), cortical SSEPs (Gregory and Wotton, 1989;Machida et al, 1994) and cord dorsum potentials (CDPs) (Brenner et al, 2008).…”

Palpation- and ultrasound-guided brachial plexus blockade in Hispaniolan Amazon parrots (Amazona ventralis)

“…2006). Brachial plexus sensory nerve conduction velocity and somatosensory evoked potentials have been evaluated in Mallard ducks ( Anas platyrhynchos ) (Brenner et al. 2008, 2010), but the techniques are technically more challenging to perform, making them less useful clinically.…”

“…The nerve evoked muscle potential (NEMP) is an electrophysiological technique for monitoring nerve function that makes it possible to assess and quantify the effectiveness of neural blockade by a local anesthetic (Pandin et al 2006). Brachial plexus sensory nerve conduction velocity and somatosensory evoked potentials have been evaluated in Mallard ducks (Anas platyrhynchos) (Brenner et al 2008(Brenner et al , 2010, but the techniques are technically more challenging to perform, making them less useful clinically. NEMPs are a more useful method of assessing brachial plexus function and have not been previously used to evaluate local anesthesia in psittacine birds.…”