Neurophysiological Monitoring
EEG Test (Electroencephalography)
A EEG (Electroencephalogram) test is to monitor and analyse electrical pulses in the brain. The brain cells communicate with one another through electrical activity. An EEG will identify any issues related to your brain activity.
How does EEG record brain activity?
Using electrodes, this technique captures brain wave patterns. These electrodes are wire-strapped to the scalp. The electrodes then record the electrical impulses and transmit signals to the computer at the same time. The findings will then be recorded and displayed by the computer.
What are the abnormalities detected by EEG?
Digital EEGs may aid in the detection of brain abnormalities. These anomalies may be linked to brain problems, so it is critical to be aware of them early on. The digital EEG technique may identify Epilepsy, Tumors of the Brain, A Head Injury & Coma.
What Is the Purpose of EEG?
EEG is mostly used to diagnose seizure disorders. It is also used to detect coma, encephalopathies, encephalitis, sleep problems, anaesthetic depth, and brain death. It is also used to distinguish between seizures and pseudoseizures. EEG is especially helpful in the ICU to rule out potentially fatal conditions such as status epilepticus.
How Should You Prepare for a EEG?
The night before, wash your hair. Apply no oil, gel, or hairspray to the hair.
Sleep Study
The sleep study consists of a non-invasive test called a polysomnogram. This records a variety of body functions during sleep such as electrical activity of the brain, sleep pattern, breathing, oxygen levels, heart rate and rhythm, and muscle tone. Once the study is complete, the test data is reviewed and “scored” by a specialist and relevant recommendations are made.
LEVELS OF SLEEP STUDY
Level 1 :
(Clinic) In this, the patient is asked to come to the clinic in night’s comfortable clothing at 9:30 pm on the day of the test – a sleep technologist will place sensors on patient’s scalp, face, chest and legs. These sensors will record brainwave activity (to assess sleep stage), eye movements, muscle activity, heart rhythm, body movements, nasal/oral airflow, respiratory effort and oxygenation. The test is an overnight test, will continue till the usual wake-up time of the patient.
Level 2 :
(Home-based) It’s the same study like clinic- based, the only difference is it is performed at patient’s home and the technician will stay overnight at patient’s home till the completion of the test.
CPAP Titration-will be performed during the above if required on the same night.
Level 3 :
In this the Technician will go to the patients home and fix the machine, will teach the patient how to use the equipment but NOT spend the night. The equipment shall be picked up the next morning or dropped by patient(after discussion). This will record more than 4 channels i.e. snoring, breathing effort, oxygen saturation and ECG.
Choosing a wrong sleep study will lead to:
1. misdiagnosis, underdiagnosis, 2. Delay in treatment.
When will I know the result? :
Usually after 48 hours-72 hours.
1. misdiagnosis, underdiagnosis, 2. Delay in treatment.
When will I know the result? :
Usually after 48 hours-72 hours.
