Sleep Physiologist

Sleep physiologists are AHCS-registered healthcare scientists who specialise in the investigation and management of sleep disorders. Working within NHS sleep investigation units — often within respiratory medicine or neurology departments — you set up, record, and score diagnostic sleep studies for patients with suspected sleep disorders including obstructive sleep apnoea (OSA), central sleep apnoea, hypoventilation syndromes, narcolepsy, restless legs syndrome, REM sleep behaviour disorder, and parasomnias.

Your core technical work involves polysomnography (PSG) — multi-channel overnight recordings monitoring EEG (brain waves), EOG (eye movements), EMG (muscle tone), nasal airflow, respiratory effort belts, pulse oximetry, and body position — and the detailed manual scoring of these studies according to AASM (American Academy of Sleep Medicine) criteria. You also administer and interpret home sleep apnoea testing (HSAT) devices, fitting patients with portable monitors for overnight home recordings and downloading and scoring the resulting data. OSA management is a substantial part of the role: you initiate and optimise CPAP (continuous positive airway pressure) therapy, conduct CPAP follow-up clinics, troubleshoot mask fit and pressure issues, and review therapy adherence data from device downloads.

At Band 4, you support sleep study setup, patient education, and basic data collection. At Band 5 and 6, you score studies independently, run CPAP clinics, and contribute to reporting. Sleep physiology often sits within respiratory physiology departments — many respiratory physiologists develop sleep as a subspecialty — and AHCS registration applies across the physiological sciences domain.

Obstructive sleep apnoea affects an estimated 1.5 million people in the UK, the majority undiagnosed. Growing clinical awareness, increasing population obesity (a major OSA risk factor), and recognition of OSA's relationship with cardiovascular disease, type 2 diabetes, and road traffic accidents drive sustained and increasing NHS referrals to sleep services. NHS England's sleep apnoea pathway and DVLA guidance on OSA and driving create regulatory imperatives that sustain service demand.

AHCS statutory registration creates a professional accountability framework, and the technical complexity of polysomnography scoring — requiring knowledge of sleep staging, respiratory event scoring, cardiac arrhythmia recognition, and neurological patterns — cannot be replicated by less qualified workers. The CPAP follow-up clinic model also creates a high-volume, repeating workload. Long waiting lists for sleep investigation in most NHS trusts reflect a structural workforce shortage, with real career opportunities for trained sleep physiologists across the country.

Afternoon and evening: prepare the sleep laboratory for overnight investigations — calibrate polysomnography equipment, apply electrodes (EEG cup electrodes with conductive paste, EOG, chin and leg EMG, ECG), nasal pressure transducer, respiratory effort belts, and pulse oximeter for two patients attending for full polysomnography. Educate patients on the sleep study procedure and ensure they are settled. Overnight technician may monitor ongoing recordings. Morning: score the two overnight polysomnography studies from the previous night using AASM scoring criteria — identify sleep stages, respiratory events, leg movements, and arousals. Produce scored reports for consultant sign-off. CPAP clinic: review six established CPAP patients, download and interpret therapy adherence data, adjust pressure or mask type as needed, counsel one patient who has stopped using CPAP.