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Tag: damage

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By Dr. Alex Jimenez DC, APRN, FNP-BC, CFMP, IFMCP 0 Comments Chiropractic Care, Therapy , , , , , , , , , , , , , , , , ,

Understanding Nerve Conduction Velocity in Health Care

Should individuals experiencing nerve pain or various sensations get a nerve conduction velocity study to examine nerve health and function?

Nerve Conduction Velocity

A nerve conduction velocity (NCV) is a noninvasive test that measures the speed and strength of nerve stimulation using electrical probes placed on the skin. It’s used to diagnose nerve damage or disease, often alongside an EMG (electromyogram) to differentiate between nerve and muscle problems. It can also evaluate sensory issues, pain, and weakness of the extremities.

  • This test involves safe electrical shocks that can be slightly uncomfortable but not painful.
  • Nerve conduction velocity (NCV) measures the speed at which electrical impulses travel along a nerve fiber, which measures how quickly electrical signals travel through a nerve.
  • This information indicates nerve health and function.
  • Electromyography (EMG) is a nerve test that involves placing tiny needles into the muscles.
  • A slower NCV can indicate nerve injury or dysfunction.

Test Uses

Generally, the test is ordered to assess peripheral nerve diseases, those that connect from the muscles, organs, and skin to the spinal cord or brain. It can help identify the type and location of nerve damage.

  • Peripheral nerve conditions typically cause pain, sensory loss, tingling, or burning.
  • Mild weakness and diminished reflexes can be detected during a neurological examination.

Conditions

Nerve conduction studies are performed to help diagnose conditions.

  • Herniated disc disease
  • Sciatic nerve problems
  • Carpal tunnel syndrome
  • Guillain-Barré syndrome
  • Nerve damage (neuropathy), such as from diabetes, chemotherapy, or autoimmune disorders
  • Charcot-Marie-Tooth disease

Nerve compression

  • Many different conditions, including trauma, inflammation, and tumors, can compress one or more nerves.

Radiculopathy

  • Often described as a pinched nerve, radiculopathy can affect an arm or a leg, causing pain and weakness.

Peripheral Neuropathy

  • This nerve damage begins in the most distal nerves, those farthest from the center of the body, such as the toes and fingers. It is often due to chronic alcohol misuse, uncontrolled diabetes, nutritional deficits, and inflammatory diseases. (Ferdousi M. et al., 2020)

Carpal Tunnel Syndrome

  • Commonly caused by inflammatory diseases or overuse of the wrists, such as from assembly line work, carpal tunnel syndrome causes numbness, pain, and weakness of the fingers and hands. (Tada K. et al., 2022)

Ulnar neuropathy

  • This common condition causes arm pain and sensory changes, usually due to repetitive movements or a prolonged position that causes pressure on the ulnar nerve.

Guillain-Barré syndrome (GBS)

  • This inflammatory condition causes demyelination, or loss of the insulating covering around nerves, which results in leg weakness.
  • It begins in the motor nerves, which send signals to muscles in the legs. (Shibuya K. et al., 2022)
  • The inflammation travels to nerves of the upper body, often affecting the muscles that control breathing.
  • Respiratory support is necessary until the condition improves.

Chronic Demyelinating Polyneuropathy (CIDP)

  • This condition is a chronic, recurrent form of GBS that usually affects the legs and causes episodes of weakness.

ICU neuropathy

  • Metabolic changes, severe illness, and not moving enough can cause nerves to develop a pattern of weakness and sensory loss.

Myasthenia gravis (MG)

  • This autoimmune condition affects the junction between the nerves and the muscles.
  • Myasthenia gravis causes drooping eyelids and weakness of the arms and shoulders.

Amyotrophic lateral sclerosis (ALS)

  • ALS is a serious, degenerative disease affecting the spinal cord’s motor neurons.
  • Amyotrophic lateral sclerosis progresses rapidly, resulting in substantial weakness of muscles throughout the body.

How it’s Done

  • Surface electrodes are placed on the skin over nerves, and a small electrical current is applied to stimulate the nerve.
  • The time it takes for the electrical signal to travel between the electrodes is measured, and this time is used to calculate the NCV.

Values

Normal NCV values are generally between 50 and 70 meters per second. However, these values can vary depending on the nerve and the individual.

NCV Factors

Various factors can influence NCV.

  • Age
  • Sex
  • Medical conditions like diabetes

Interpretation

  • A slower NCV can indicate nerve damage or demyelination (loss of the myelin sheath, which insulates nerve fibers), while an EMG can help determine if the problem is with the nerve or the muscle.

Results

The results of NCV testing can be used to determine the type, severity, and location of nerve damage. The results will be ready in report form about a week after the test.

  • The test measures velocity (how fast a nerve transmits signals) and amplitude (how many nerve fibers were activated). (Tavee J. 2019)
  • The measurements are transmitted to a computer and shown as waves and numerical values.
  • The values are compared to a standard measurement based on the tested nerve.
  • The distance between the electrodes.
  • The person’s age.

Compared to the standard, the NCV results can identify certain patterns of nerve damage. (Tada K. et al., 2022) Outcomes include: (Tavee J. 2019)

  • If one or more nerves are affected.
  • If motor nerves (control movement), sensory nerves (transmit sensory signals), or both are affected.
  • Whether a nerve is blocked or damaged.
  • The severity of the damage.
  • The type of nerve damage
  • Axonal (damage to the nerve itself)
  • Demyelination (damage to the protective fatty layer around the nerve)

The results can help point to certain diagnoses.

Preparation Before the Test

Individuals will not need to change their diet before having an NCV. However, patients will be asked to avoid lotions or creams on their skin before the test. Individuals who are also having an EMG at the time of their NCV might be asked to stop taking medications or supplements that increase the risk of bleeding and bruising. If a healthcare provider says not to stop taking the medicines for health reasons, the patient might be warned that they could have some bruising after the EMG test.

  • NCV may advise against getting the test for those with electrical device implants.
  • Make sure your healthcare providers are aware of your whole medical history.

Injury Medical Chiropractic & Functional Medicine Clinic

Injury Medical Chiropractic and Functional Medicine Clinic works with primary healthcare providers and specialists to develop an optimal health and wellness solution. We focus on what works for you to relieve pain, restore function, and prevent injury. Regarding musculoskeletal pain, specialists like chiropractors, acupuncturists, and massage therapists can help mitigate the pain through spinal adjustments that help the body realign itself. They can also work with other medical professionals to integrate a treatment plan to resolve musculoskeletal issues.

Peripheral Neuropathy and Chiropractic Care

References

Ferdousi, M., Kalteniece, A., Azmi, S., Petropoulos, I. N., Worthington, A., D’Onofrio, L., Dhage, S., Ponirakis, G., Alam, U., Marshall, A., Faber, C. G., Lauria, G., Soran, H., & Malik, R. A. (2020). Corneal confocal microscopy compared with quantitative sensory testing and nerve conduction for diagnosing and stratifying the severity of diabetic peripheral neuropathy. BMJ open diabetes research & care, 8(2), e001801. https://doi.org/10.1136/bmjdrc-2020-001801

Tada, K., Murai, A., Nakamura, Y., Nakade, Y., & Tsuchiya, H. (2022). In Carpal Tunnel Syndrome, Sensory Nerve Conduction Velocities Are Worst in the Middle Finger Than in the Index Finger. Frontiers in Neurology, 13, 851108. https://doi.org/10.3389/fneur.2022.851108

Shibuya, K., Tsuneyama, A., Misawa, S., Suzuki, Y. I., Suichi, T., Kojima, Y., Nakamura, K., Kano, H., Ohtani, R., Aotsuka, Y., Morooka, M., Prado, M., & Kuwabara, S. (2022). Different patterns of sensory nerve involvement in chronic inflammatory demyelinating polyneuropathy subtypes. Muscle & Nerve, 66(2), 131–135. https://doi.org/10.1002/mus.27530

Tavee J. (2019). Nerve conduction studies: Basic concepts. Handbook of Clinical Neurology, 160, 217–224. https://doi.org/10.1016/B978-0-444-64032-1.00014-X

By Dr. Alex Jimenez DC, APRN, FNP-BC, CFMP, IFMCP 0 Comments Chiropractic Care , , , , , , , , , , , , , , , , , , ,

Detecting Alcoholic Peripheral Neuropathy: Signs and Testing

Excessive alcohol consumption: what is alcoholic peripheral neuropathy?

Alcoholic Peripheral Neuropathy

Alcoholic peripheral neuropathy (ALN) is a condition that damages the nerves in the body due to chronic alcohol consumption. It can cause sensory, motor, and autonomic dysfunction, which can lead to disability. This damage prevents the nerves from communicating information. Most symptoms generally start as mild but typically worsen over time as the neuropathy progresses. The most common symptoms are: (National Library of Medicine, 2023)

  • Numbness or tingling sensation in the extremities
  • Pain or a burning sensation in the extremities
  • Difficulty walking
  • Difficulty urinating
  • Difficulty talking or swallowing

 Affected nerves include the peripheral and autonomic nerves, which help regulate internal body functions. Around 46% of chronic alcohol users will eventually develop the condition. (Julian T., Glascow N., Syeed R., & Zis P. 2019)

Causes

The exact cause of alcoholic neuropathy is unclear. But it is directly related to heavy and long-term alcohol consumption. (Julian T., Glascow N., Syeed R., & Zis P. 2019) It is believed overconsumption of alcohol can directly harm and hinder the nerves’ ability to communicate information. Unhealthy nutritional habits are often associated with it as well. Research shows that decreased thiamine/B vitamin plays a role, while others suggest an overall dietary deficiency may play a role. (Julian T., Glascow N., Syeed R., & Zis P. 2019) However, alcoholic neuropathy can also occur without the presence of malnutrition. (Julian T., Glascow N., Syeed R., & Zis P. 2019)

Neuropathy Development and Progression

Alcoholic neuropathy develops depending on many factors, including the amount of daily/nightly alcohol consumed, age and overall health, nutritional intake, and other individual factors. In most cases, the neuropathy takes several years or decades to develop, depending on the amount of alcohol consumed.

Symptoms

Symptoms are usually related to nerve dysfunction and include: (National Library of Medicine, 2023)

  • A tingling or pins-and-needles sensation in the extremities.
  • Numbness of the extremities, most commonly in the legs or feet. (Julian T., Glascow N., Syeed R., & Zis P. 2019)
  • Pain or burning sensation in the arms, legs, or feet.
  • Symptoms that occur in the arms and legs typically affect both sides.
  • Cramps, aches, or weakness of the muscles.
  • Constipation or diarrhea.
  • Nausea and vomiting.
  • Difficulty urinating or incontinence.
  • Difficulty walking.
  • Difficulty talking or swallowing.
  • Heat intolerance.
  • Erection difficulties.

Most symptoms begin as mild and usually worsen over time as the neuropathy progresses. Alcoholic neuropathy affects individuals who consume excessive amounts of alcohol over a long time. (Julian T., Glascow N., Syeed R., & Zis P. 2019)

Diagnosis

Symptoms can vary significantly so that a diagnosis may take time. It usually involves a combination of the following (National Institute of Neurological Disorders and Stroke, 2024)

Medical History

  • Healthcare providers will collect data involving past medical history and all current symptoms.

Physical Exam

  • This exam looks at other medical conditions contributing to symptoms, like diabetes or high blood pressure.

Neurological Exam

  • This is a noninvasive exam to determine the location and extent of neurological damage.
  • Healthcare providers may ask patients several questions and have them complete a series of small movements to check neurological function.

Blood and Urine Tests

  • These tests can detect diabetes, liver and kidney problems, infections, vitamin deficiencies, and other conditions that can cause neuropathic conditions.

Chronic alcohol use can also affect how the body stores and uses vitamins necessary for healthy nerve function. Vitamin levels that a healthcare provider may check include: (National Library of Medicine, 2023)

  • Vitamin A
  • Biotin
  • Folic acid
  • Niacin, or vitamin B3
  • Pyridoxine, or vitamin B6
  • Pantothenic acid

Liver Disease

Individuals with chronic liver disease often have neuropathy. The severity and stage are associated with a higher incidence of neuropathy. (Pasha MB, Ather MM, Tanveer MA, et al. 2019)

Treatment

Alcoholic neuropathy is not reversible, even when quitting drinking. However, individuals with the condition can make healthy changes to minimize symptoms and receive help for chronic alcohol use. The first step is stopping alcohol consumption. (Chopra K., & Tiwari V. 2012) Talk to a healthcare provider about what options are available. Treatment can include:

  • In-patient or outpatient rehab
  • Therapy
  • Medication
  • Social support from groups like Alcoholics Anonymous

A combination of treatments will likely be utilized. Other treatment options involve symptom management and preventing further injuries and may include:

  • Physical therapy
  • Keeping the head elevated while sleeping.
  • Orthopedic splints to maintain limb function and positioning.
  • Wearing compression stockings.
  • Adding vitamins and supplements.
  • Eating extra salt for those without hypertension
  • Medications to reduce pain and discomfort.
  • Intermittent catheterization or manual expression of urine for those with difficulty urinating.

Individuals with neuropathy may have reduced sensitivity in the arms and legs. If this occurs, additional steps need to be taken to prevent other injuries, that include (National Library of Medicine, 2023)

  • Wear special footwear to prevent foot injuries.
  • Checking feet daily for wounds.
  • Prevent burns by ensuring that bath and shower water is not too hot.

Injury Medical Chiropractic and Functional Medicine Clinic

Injury Medical Chiropractic and Functional Medicine Clinic works with primary healthcare providers and specialists to build optimal health and wellness solutions. We focus on what works for you to relieve pain, restore function, prevent injury, and help mitigate issues through adjustments that help the body realign itself. They can also work with other medical professionals to integrate a treatment plan to resolve musculoskeletal problems.

Peripheral Neuropathy Myths and Facts

References

National Library of Medicine. (2023). Alcoholic neuropathy. Retrieved from https://medlineplus.gov/ency/article/000714.htm

Julian, T., Glascow, N., Syeed, R., & Zis, P. (2019). Alcohol-related peripheral neuropathy: a systematic review and meta-analysis. Journal of Neurology, 266(12), 2907–2919. https://doi.org/10.1007/s00415-018-9123-1

National Institute of Neurological Disorders and Stroke. (2024). Peripheral neuropathy. Retrieved from https://www.ninds.nih.gov/health-information/disorders/peripheral-neuropathy

Pasha MB, A. M., Tanveer MA, et al. (2019). Frequency of peripheral neuropathy in chronic liver disease. Med Forum Monthly, 30(8), 23-26. https://medicalforummonthly.com/index.php/mfm/article/view/3761

Chopra, K., & Tiwari, V. (2012). Alcoholic neuropathy: possible mechanisms and future treatment possibilities. British journal of clinical pharmacology, 73(3), 348–362. https://doi.org/10.1111/j.1365-2125.2011.04111.x