What are nerve conduction studies?

Nerve conduction studies (NCS) are tests that are performed to evaluate the function of peripheral nerves and the nerve pathways they travel through. NCSs are usually ordered by a neurologist or a doctor specialised in nerve problems (neurologist) to help diagnose conditions such as peripheral neuropathy, carpal tunnel syndrome, and other nerve-related conditions.

During the NCS test, electrodes are placed on the skin over the nerves that are being tested. A small shock is then delivered to the nerve through the electrode, and the electrical activity is measured as it travels along the nerve. The results of the test can help the doctor determine the speed and strength of the electrical signals being sent along the nerve, which can help identify nerve damage.

The test is usually painless and only lasts for a few minutes. In some cases, patients may feel a mild tingling or electrical shock sensation during the test, but this is normal and should not be painful. The electrodes used during the test are typically applied to the skin using a sticky paste or tape, which is removed after the test is completed.

Before the NCS test, it is important for the patient to inform their doctor about any medications they are taking, as some medications can affect the results of the test. The patient should also inform their doctor about any allergies or sensitivities to tape or adhesive products, as well as any conditions that may affect their ability to feel sensation, such as neuropathy or numbness.

It is also important for the patient to wear loose and comfortable clothing to the appointment, as tight clothing may interfere with the placement of the electrodes. The patient should also avoid using creams, lotions, or oils on the skin in the area where the electrodes will be placed.

After the NCS test, the patient can usually return to their normal activities immediately. There is typically no recovery time or special after-care required after the test. The results of the NCS test will be reviewed by the doctor and interpreted to help diagnose the underlying condition causing the symptoms the patient is experiencing.

In conclusion, nerve conduction studies are a safe and effective way to evaluate the function of peripheral nerves and diagnose nerve-related conditions. The test is usually painless and only lasts a few minutes, and there is typically no recovery time or special after-care required. By informing their doctor about any medications they are taking and any conditions that may affect their ability to feel sensation, patients can help ensure accurate and reliable results from their NCS test.