Electromyography & Nerve Conduction Study
Electromyography (EMG) & Nerve Conduction Studies (NCS): a test that helps in diagnosis of conditions
related to nerves, muscles, neuromuscular
junction and motor neuron.
General Indications for EMG & NCS:
numbness, tingling, burning sensation or
pain, radicular pain, limb pain, muscle
weakness and/or atrophy, fasciculations.
Facial nerve palsy
Carpal & Cubital tunnel syndrome
Tarsal tunnel syndrome
Nerve Injuries
Peripheral neuropathy
Radiculopathies
Congenital and acquired neuropathies
Myopathies, muscular dystrophy
Neuromuscular junction disorders
Motor neuron diseases
The EMG & NCS usually takes about 1 hour to be performed and the report is provided to the referring physician or provider in 24 to 48 hours.
BOTOX injections are performed either EMG or nerve stimulation guided. The botulinum toxin when injected relaxes the muscle to reduce muscle tone and spasticity, improve function of the extremity or neck and decrease pain. The benefit of the BOTOX injection usually last up to 4-5 months depending on the condition treated and is found to be beneficial is repeated.
Special considerations:
EMGs are often avoided or done with great caution on individuals who are receiving anticoagulants (warfarin) due to risk of local bleeding. Depending on each individual case your doctor may stop the warfarin 3 days before the study and re-assume immediately after.
EMGs are generally not problematic for persons with pacemakers, but nerve conduction studies requiring stimulation near pacemakers should be avoided.
Do not apply body or hand lotion, this will make difficult for the superficial electrodes to adhere to the skin.
4/17/2011