Electromyography (EMG) in Dubai

Electromyography (EMG) in Dubai

Electromyography, commonly abbreviated as EMG, is a specialised diagnostic test used to measure the electrical activity generated by muscles. Muscles produce electrical signals when stimulated by the nerves that supply them. Electromyography, commonly known as an EMG, is a specialised diagnostic test that measures the electrical activity produced by muscles.

How Does an EMG Work?

Healthy muscle tissue is not supposed to produce electrical activity when at rest. When a fine needle electrode is first introduced into a muscle, there is an outburst of potentials on the monitor, which is a normal reaction to the insertion of the needle. After a period of activity triggered by needle insertion, the muscle regains its electrical silence at rest. 
When you are then asked to contract the muscle – by lifting a limb or flexing against resistance – the muscle fibres “fire up” and start to produce electrical signals. These signals, known as action potentials, are picked up by the electrode and displayed as waveforms on the oscilloscope. The neurologist analyses this waveform in terms of its shape and in terms of size and duration, and finally, in terms of pattern.

Why Is an EMG Test Done?

AAn EMG is recommended when a patient presents with symptoms that point to a problem with the muscles, nerves, or the neuromuscular junction. These symptoms include muscle weakness, wasting, cramping, twitching (fasciculations), increased fatigue, or a combination of weakness and sensory symptoms like numbness and tingling. 

Conditions usually diagnosed or assessed using electromyography include :

  • Radiculopathy — Compression of a spinal nerve root due to a herniated disc or spinal stenosis, characterized by pain, weakness, or numbness radiating into an arm or leg. 
  • Carpal tunnel syndrome — Compression of the median nerve at the wrist, producing hand weakness and sensory disturbance. 
  • Guillain-Barré syndrome (GBS) – An acute immune-mediated disorder characterized by rapidly progressive limb weakness. 
  • Motor neuron disease (MND) / ALS — A degenerative disease which attacks the motor neurons that control voluntary movement. 
  • Myopathies — Primary muscle diseases and they included inflammatory myopathies such as polymyositis and dermatomyositis. 
  • Myasthenia gravis – A neuromuscular junction disorder characterized by variable muscular weakness and increased tiredness in nerve-stimulated muscles. 
  • Lambert-Eaton myasthenic syndrome – A rare neuromuscular junction disorder, which is commonly linked with an underlying malignancy. 
  • Muscular dystrophies – inherited disorders that result in progressive muscle degeneration. 
  • Plexopathies – Injury, inflammation, or tumour-related damage to a network of nerves, such as a brachial or lumbosacral plexus. 
  • Facial nerve disorders and bulbar weakness – EMG of facial muscles, or throat muscles if cranial nerves are suspected to be involved. 

EMG is also used to monitor disease progression and to assess the response to treatment in patients with known neuromuscular conditions.

How to Prepare for an EMG

Preparation for an EMG is straightforward. Following these steps will help ensure accurate results and a comfortable experience:

  • Do not apply any lotions, oils, or creams to your skin for at least 24 to 48 hours before the test, or at a minimum on the day of the procedure. These products interfere with electrode contact and can affect recording quality.
  • Wear comfortable, loose-fitting clothing that allows easy access to the area being tested. You may be asked to change into a gown on arrival.
  • Avoid smoking and caffeine — including coffee, tea, cola, and energy drinks — for at least two to three hours before the test, as these can temporarily affect muscle and nerve activity.
  • Continue your regular medications unless your neurologist has specifically advised otherwise. Do not stop any medications without medical guidance.
  • Inform your neurologist of all medications you are currently taking, including prescription drugs, blood thinner medication, over-the-counter medicines, and herbal supplements, as some of these may be relevant to interpreting the results.
  • If you have a cardiac pacemaker or implanted defibrillator, notify your neurologist before the test. Appropriate precautions will be taken.
  • Remove jewellery, hairpins, hearing aids, and metal accessories from the area to be tested before the appointment.

No fasting or sedation is required for an EMG.

What to Expect During an EMG

Before the Test

On arrival, your neurologist will review your symptoms, take a detailed clinical history, and perform a focused neurological examination to identify which muscles need to be studied. The procedure will be fully explained before it begins, and you will have the opportunity to ask any questions.

During the Test

You will be asked to sit or lie down in a comfortable position. The skin over the muscle to be examined is cleaned with an antiseptic solution. A fine, sterile needle electrode is then inserted through the skin into the muscle. A ground electrode is placed nearby – typically under the arm or leg – to ensure a clean recording.The needle electrode is very fine and most patients tolerate the procedure well. You may feel a brief, mild discomfort at the moment of insertion, which typically settles quickly. If the test causes significant pain, it is important to inform the neurologist immediately, as discomfort can affect the quality of the recording.
The neurologist will assess the muscle in two phases:
At rest – The muscle is allowed to relax completely. Normal muscle tissue is electrically silent at rest. The presence of abnormal spontaneous activity at this stage – such as fibrillations or positive sharp waves – indicates nerve or muscle damage.

During contraction – You will be asked to contract the muscle gently, then more forcefully, by moving the limb or applying resistance. As you increase the effort, more muscle fibres are recruited and more action potentials appear on the screen. The neurologist analyses the waveform patterns produced to assess whether the muscle is functioning normally, or whether the pattern suggests nerve damage, muscle disease, or a neuromuscular junction problem.

After the Test

Once the EMG is complete, the needle electrodes are removed and the skin is inspected. You can return to your normal daily activities immediately. No sedation is involved and there are no restrictions on driving or work following the procedure.
It is common to experience mild muscle soreness or aching in the tested areas for 24 to 48 hours after the test – similar to the sensation after light exercise. This is entirely normal and resolves on its own.
You should contact your neurologist if you notice increasing pain, swelling, redness, warmth, or any discharge at the needle insertion sites, as these are uncommon but should be assessed.

Risks and Safety

An EMG is a safe and well-established diagnostic procedure. The needles used are very fine and sterile, used once only, and disposed of immediately after the test. The risk of infection is extremely low.

Some patients experience mild, temporary muscle soreness after the test, which typically resolves within one to two days. Slight bruising at needle sites may occasionally occur, particularly in patients taking blood-thinning medications.

There are no long-term risks associated with an EMG. The procedure does not involve radiation or electrical stimulation into the body.

Results

Following the EMG, the neurologist analyses all findings from both the needle examination and, where applicable, the nerve conduction study performed in the same session. The results are interpreted together to build a comprehensive picture of neuromuscular function.

The EMG report will document the pattern of electrical activity observed at rest and during contraction in each muscle tested. Findings may indicate:

  • Neurogenic changes — suggesting that the primary problem is with the nerve supplying the muscle, as seen in radiculopathy, peripheral neuropathy, or motor neuron disease
  • Myopathic changes — suggesting that the primary problem lies within the muscle itself, as seen in inflammatory myopathies or muscular dystrophies
  • Neuromuscular junction dysfunction — as seen in myasthenia gravis or Lambert-Eaton syndrome, particularly when combined with repetitive nerve stimulation findings
  • Normal findings — which, in the right clinical context, can also be diagnostically useful in narrowing the differential diagnosis

Your results will be discussed with you at a follow-up consultation. As with all electrophysiological tests, the EMG findings are never interpreted in isolation — they are always considered alongside your clinical history, symptoms, examination, and any relevant imaging or blood test results.

Why Choose Dr. Amit Arora for Your EMG in Dubai?

  • Specialist training in clinical neurophysiology — Dr. Arora completed the Comprehensive Clinical Neurophysiology and EEG Course at the Cleveland Clinic Epilepsy Centre, Ohio, USA — one of the most respected neurology training programmes in the world — reinforcing both his technical proficiency and his interpretive skills across all electrophysiological modalities.
  • Internationally credentialed — He holds a Specialty Certificate Examination (SCE) in Neurology from the Royal College of Physicians (RCP), UK, and a Fellowship of the European Board of Neurology (FEBN) — two internationally recognised benchmarks of specialist neurological competence.
  • Consulting at Fakeeh University Hospital — Dr. Arora consults at Fakeeh University Hospital, a reputed academic hospital known for maintaining high standards of specialist clinical care. Patients benefit from access to advanced medical facilities combined with the expertise of an internationally credentialed consultant neurologist.