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Q - What is the PES?
A – The PES is a method of measuring the effort of breathing. It stands
for Pressure in the Esophagus and it measures exactly that, the
pressure in the esophagus. As a person increases the effort of
breathing there is a corresponding increase in the vacuum created
within the chest (negative pressure) and this is measured by a
catheter in the esophagus. This is the most reliable method of
measuring the effort of breathing during sleep. Disorders such as the
Upper Airway Resistance Syndrome in many patients can only be
accurately diagnosed with the PES.
Q – Why would a patient need the PES?
A – Some patients have breathing problems that are not accurately
detected using the standard methods of sleep testing. Using the PES
provides a more accurate method of breathing measurement and it is sometimes
necessary in order to establish a proper diagnosis.
See a video of pediatric PES here: Pediatric PES placement
Q – What is Video EEG monitoring?
A – Video EEG monitoring is an extended type of EEG (brain wave
measurement), with about 16 EEG electrodes placed on the scalp. This
provides a more detailed assessment of brain wave activity and is
needed to properly assess the brain waves when there is a concern of
possible seizures. Routine sleep testing does not provide enough EEG
channels to properly evaluate for seizure events.
Q – What is Board Certification in Sleep Medicine?
A – In order to demonstrate proper training in Sleep Medicine a
physician should take the Sleep Board exam. Many doctors who are
providing sleep testing services to patients are NOT board certified
as sleep specialists.
