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Completed

NCT Number: NCT02533024

Preoperative Prevalence of Ulnar Neuropathy and Changes in Ulnar Nerve Latency During Surgery

This study is to investigate the incidence of undiagnosed ulnar neuropathy in patients undergoing surgery. The investigators hope to determine if patients with ulnar neuropathy have changes in nerve conduction latency during surgery.

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Key information

Conditions

Ulnar Neuropathy Mononeuropathies Nervous System Diseases Neuromuscular Diseases Peripheral Nervous System Diseases Ulnar Neuropathies

Age range

50 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

University of Toledo

Toledo, Ohio, 43614, United States

About this study

After obtaining an informed consent, the participating subjects will be asked a few questions relating to ulnar nerve dysfunction. Following this the investigators will do a focused physical exam looking for decrement of sensation in the distribution of the ulnar nerve and muscle strength of the hand muscles supplied by the ulnar nerve. After this the subjects will undergo an EMG exam to measure the conduction velocity of the ulnar nerve. Basically the nerve will be stimulated with a small current and the resultant muscle activity of the hand muscle will be picked up using an EKG like patch applied to the skin over the hand. If a subject is diagnosed to have ulnar neuropathy preoperatively the investigators would study the EMG based nerve conduction during surgery at 30-60 minute intervals for the duration of surgery. For purposes of comparison the investigators would measure the ulnar nerve conduction during surgery in age and sex matched controls.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • 50 yrs of age or older
  • Scheduled to undergo a surgical procedure at UTMC with an anticipated length of 2hours or greater

Exclusion criteria

  • Less than 50yrs
  • Not scheduled for a surgical procedure at UTMC or scheduled for a surgical procedure with an anticipated length of less than 2hours

Treatment and study plan

Electromyography

Other

All subjects will have an EMG before, during and immediately after surgery.

Other names: EMG

Primary outcomes

  1. Prevalence of ulnar neuropathy in patients scheduled to undergo anesthesia and surgery as measured by electromyography

    Time frame: Day 1

    Prevalence of undiagnosed or subclinical ulnar neuropathy as determined by electromyography

Secondary outcomes

  1. Amplitude (mV)

    Time frame: Day 1

    Compare preoperative, perioperative and postoperative amplitude changes from EMG

  2. Latency (ms)

    Time frame: Day 1

    Compare preoperative, perioperative and postoperative latency changes from EMG

  3. Velocity (m/s)

    Time frame: Day 1

    Compare preoperative, perioperative and postoperative velocity changes from EMG

Sponsors and collaborators

Lead sponsor

University of Toledo Health Science Campus

Other

Registry information

Important dates

Study start
2015
Primary completion
2017
Study completion
2017
First posted
Aug 26, 2015
Registry last updated
Sep 25, 2017

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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