Electrodiagnostic Study (EMG & NCS)
This is a diagnostic procedure that measures the electrical signals of nerves and muscles. It is used to evaluate neuromuscular disorders, such as hand or foot numbness and muscle weakness, ensuring accurate diagnosis and effective treatment.
Recommended for the Following Conditions:
- Carpal Tunnel Syndrome (CTS): Nerve compression at the wrist causing hand numbness.
- Nerve or Brachial Plexus Injuries: Resulting from accidents or trauma leading to muscle weakness.
- Peripheral Neuropathy: Nerve inflammation causing numbness in hands and feet (e.g., Polyneuropathy, GBS, CIDP).
- Radiculopathy: Herniated discs pressing on nerve roots.
- Muscle Disorders: Including Myositis, muscular atrophy, and Myasthenia Gravis (MG).
- Bell’s Palsy: Inflammation of the 7th cranial nerve leading to facial drooping.
- Degenerative Spine Diseases: Affecting the neck (cervical) or back (lumbar).
- Anterior Horn Cell Diseases: Such as Amyotrophic Lateral Sclerosis (ALS).
- Neck and Back Nerve Disorders.
- Congenital Neuropathies.
- Other neurological and muscular system disorders.
Procedure Methods
The electrodiagnostic study is divided into two main parts:
1. Nerve Conduction Study (NCS): A safe level of electrical current is used to stimulate nerves along their pathways. The doctor analyzes the resulting waveforms on a monitor to identify nerve abnormalities.
2. Needle Electromyography (EMG): A tiny needle electrode is inserted into specific muscles to record electrical activity. This helps pinpoint the exact location of the lesion. Results from both NCS and EMG are combined to provide a comprehensive diagnosis.
Preparation
- No fasting is required (you may eat and drink normally).
- Inform your doctor if you have a pacemaker, take blood thinners (anticoagulants), or take medication for Myasthenia Gravis (MG).
- Avoid wearing jewelry or accessories to ensure the diagnostic equipment works effectively.
Post-Procedure Care
Patients can return home immediately. There are typically no side effects, though you may feel slight soreness at the needle insertion sites. Over-the-counter pain relief can be used if needed. If you notice unusual swelling or redness, please contact your doctor.
