Koja je razlika između polisomnografije i poligrafije?

Polygraphy (PG), or ambulant sleep apnea recording, is a common method for diagnosing obstructive sleep apnea (OSA) because it is easy to use and cost-effective [1]. However, PG does not measure sleep as polysomnography (PSG) with EEG, EOG, and EMG does, thus the arousals caused by flow limitation and not shown sleep stage.

Poligraf (PG)

To detect obstructive sleep apnea (OSA), these two type of sleep studies can be conducted:Polysomnography (PSG) and Polygraphy (PG).

Polygraphy (PG): Home Sleep Apnea Test (HAST), this second type of study involves using a portable device at home to detect OSA.

Advantages of Polygraphy:

Convenience: unlike PSG, where you need an appointment with a technician, RP allows you to pick up the device and perform measurements at your convenience.

Ease of Installation: the devices are straightforward to set up.

Comfort: You get to sleep in your own bed during the test.

Cost-Effective: PG is more budget-friendly; its cost can be half that of a polysomnogram.

Effective for Obstructive Sleep Apnea Diagnosis: PG serves as a reliable test for diagnosing obstructive sleep apnea.

If you experience symptoms such as loud snoring, waking up in the middle of the night, fatigue, and daytime drowsiness, it’s essential to consult a specialist for examination. Depending on your doctor’s assessment, you may be prescribed a respiratory polygraph.

When prescribed a respiratory polygraph, patients receive a measuring device from their doctor’s office or a sleep clinic. Alternatively, a sleep technician may bring the device directly to the patient’s home. Patients follow the technician’s instructions on how to set up and use the device.Then, patients wear the device while sleeping. The device collects data related to breathing patterns, oxygen levels, and other relevant parameters. An additional sensor is attached to the body to monitor chest and abdominal movements during breathing. The device records various signals throughout the night, including airflow through the nose, oxygen saturation (SpO2), and snoring sounds. Patients can rest assured that the device won’t significantly disrupt their sleep.

The following day, patients return the device. Technicians and sleep specialists analyze the collected data. The primary goal is to detect obstructive sleep apnea (OSA) and assess overall sleep quality.

Polisomnografija (PSG)

To detect obstructive sleep apnea (OSA), these two type of sleep studies can be conducted: Polysomnography (PSG) and Polygraphy (PG).

Polisomnografija: Ova studija noćnog spavanja, provedena u laboratoriju za spavanje ili bolnici, zlatni je standard za dijagnosticiranje opstruktivne apneje u snu (OSA). Polisomnografija, također nazvana studija spavanja, sveobuhvatan je test koji se koristi za dijagnosticiranje poremećaja spavanja. Polisomnografija bilježi vaše moždane valove, razinu kisika u krvi, otkucaje srca i disanje, kao i pokrete očiju i nogu tijekom studije. Prema zabilježenim gore navedenim parametrima mogu se otkriti problemi sa spavanjem pacijenta i dijagnosticirati vrsta apneje, težina apneje, analizirati učinkovitost terapije poremećaja spavanja. PSG je "zlatni standard" za dijagnozu OSA i drugih oblika poremećaja disanja tijekom spavanja. PSG je bezbolan i siguran dijagnostički uređaj.

Komponente polisomnograma uključuju sljedeće:

● Elektroencefalogram (EEG)

● Elektromiografija (EMG)

● Elektrookulografija (EOG), za praćenje brzih pokreta očiju

● Elektrokardiogram (EKG) za praćenje srčane funkcije

●Oral and nasal airflow pressure and temperature (using nasal pressure transducer and thermistor)

● Pokreti prsnog koša i trbuha (tj. respiratorni napor, mjeren pomoću pojaseva za prsni koš i trbuh)

● Zasićenost kisikom (pomoću digitalne pulsne oksimetrije s prstom)

● Transkutani CO2 (TcCO2)

Tijekom PSG-a, karakteristične EEG, EMG i EOG amplitude i valni oblici se ocjenjuju u 30-sekundnim epohama. PSG marke Ventmed u skladu je s najnovijom verzijom AASM standarda, koristi AI tehničku analizu za izvješća, a također može generirati više izvješća o učinkovitosti terapije poremećaja spavanja.