2024 Workshop Handout Bundle-W109RTC Unusual Upper Limb Nerve Conductions for Technologists, Residents and Students Duplechan

W109RTC Unusual Upper Limb Nerve Conductions for Technologists, Residents and Students Duplechan

Pdf Summary

The document details the 2024 AANEM Annual Meeting presentation by Dr. Lester S. Duplechan, focusing on unusual upper limb nerve conductions. It outlines the objectives, which include reviewing nerve conduction study (NCS) protocols for less commonly tested upper limb nerves, discussing hybrid evaluations with needle electrodes, and evaluating specific nerves such as the Dorsal Ulnar Cutaneous (DUC), Radial Motor, Anterior Interosseous (AIN), Medial and Lateral Antebrachial Cutaneous (MAC and LAC), Axillary, and Suprascapular nerves.<br /><br />Key points include the challenges presented by standard nerve conduction practices, primarily from reliance on median and ulnar motor nerves, which demonstrate high predictability due to proximity to motor points and limited volume conduction. The document delves specifically into the nature of ulnar nerve responses, highlighting their double-peaked nature due to volume conduction from both hypothenar and deeper branch muscles. The document also touches on the complexities of evaluating responses related to motor amplitude reductions due to muscle disease or disuse.<br /><br />Furthermore, the presentation reviews diagnostic techniques for the Anterior Interosseous Nerve (AIN) using surface and needle electrodes, with an emphasis on the varying impacts of volume conduction. For axillary and suprascapular nerve assessments, respective focus areas include accurate electrode placement and recording across multiple potential entrapment sites. The radial motor nerve's extensive distribution of potential sites complicates accurate evaluations compared to specific nerve metrics.<br /><br />Additionally, strategies for detecting ulnar neuropathy at the elbow, including dynamic examinations for luxation or subluxation, are introduced. The document further includes techniques for comparing ulnar motor nerve responses and notes the importance of considering the nerve's funicular arrangement. Finally, it instructs attendees on providing feedback and claiming educational credits via the AANEM app.

Keywords

AANEM Annual Meeting

Dr. Lester S. Duplechan

upper limb nerve conductions

nerve conduction study

ncs

ncv

Dorsal Ulnar Cutaneous

Anterior Interosseous Nerve

Axillary nerve

Suprascapular nerve

ulnar neuropathy

electrode placement

nerve conduction studies

nerve conduction study

ncs

ncv