Snorlex Respiratory Polygraph (Type III and Type IV)

Snorlex — new respiratory polygraph

Today, sleep specialists, cardiologists, pulmonologists, neurologists, otolaryngologists, therapeutists and other healthcare professionals often consider patients' health issues to be associated with sleep-disordered breathing.

Such patients then require diagnostic testing, particularly polysomnography (PSG). However, PSG implies using numerous electrodes and sensors, which may seem challenging for the patients who simply have some sleep problems, and they abstain from sleep study. Due to the high cost of the comprehensive PSG study, most of such patients do not undergo the diagnostic testing for sleep disorders and go on with the non-resolved health issue, which affects their health as well as duration and quality of life.

A new respiratory polygraph, Snorlex complements the Neurosoft PSG product family and allows for diagnostics of sleep-disordered breathing using Type III and Type IV PSG recorders according to the American Academy of Sleep Medicine (AASM). The new device implements the simplified technique of sleep study (no EEG and EMG electrodes are required), opts for the use of sensors, ensures in-home testing, thus providing unconditional comfort for the patient, and can boast to be cost-effective.

In-home and in-laboratory testing

Snorlex is a lightweight and compact device with an intuitive interface that facilitates not only in-laboratory testing but in-home testing as well. After a short instruction in the clinic, the patient positions the sensors and polygraph at home, following the short guide provided with the device. The operability and correct connection of the sensors are shown on the device screen in real time, so you can always monitor them and adjust if necessary. The testing is performed in a comfortable home environment, which benefits the diagnostic quality.

Respiratory polygraph for diagnostics of sleep-disordered breathing (Type III, Type IV)

Snorlex is intended for diagnostics and screening of sleep-disordered breathing, as well as for monitoring the efficacy of CPAP therapy during sleep in adults and children over 7 years old.

The polygraph can be used to perform the following tests:

• respiratory polygraphy with respiratory effort monitoring
• respiratory polygraphy without respiratory effort monitoring
• pulse oximetry
• respiratory polygraphy with CPAP therapy.

The polygraph complies with Type III and Type IV recorders according to the AASM. It can be used for diagnostics of sleep-disordered breathing, as well as to determine the type of obstructive sleep apnea (OSA) (Type III). The specialist can also use a simple configuration of the device if only screening is intended (Type IV).

Recording of respiratory parameters, heart rate, SpO2 and body position

Snorlex features a color display that shows SpO2 and heart rate (HR) data, the connection of the inductive belt and cannula, as well as the battery level. The continuous operation time of the polygraph is 25 hours if the battery is fully charged.

The polygraph allows recording the following data to the built-in memory card:

• nasal flow
• arterial oxygen saturation (SpO2)
• heart rate
• snoring
• perfusion index (qualitative changes)
• motion activity (actigraphy) using the built-in accelerometer
• photoplethysmogram (PPG)
• pressure generated by the CPAP machine
• abdomen and thoracic respiratory efforts
• body position (important for those patients who require positional therapy for OSA).

User-friendly device

The compact electronic unit is fixed to the patient’s wrist. The required sensors are positioned on the patient and connected to the device before going to bed. The recording starts automatically after that. Thanks to the display and control button, the polygraph can operate in stand-alone mode, and the test performed is recorded to the built-in memory card for further interpretation by the specialist. The patient can press the control button during the test to emphasize some event (for example, awakening or an uncomfortable sensation), which will be marked on the recording. In the morning, the patient takes the sensors and polygraph off and brings them back to the doctor’s office or clinic.

The specialist can choose the desired configuration for their practice needs: the one intended for diagnostics of sleep-disordered breathing and determination of the OSA type and includes body position sensor and inductive belts for recording of thoracic and/or abdomen respiratory effort, or the one intended for respiratory screening only.

Sleep study comfortable for both the patient and the specialist!

The Sleep Master software supplied with the device features automatic tools that streamline the interpretation of the obtained data by several times. The implemented algorithms detect disordered breathing, desaturation, snoring, tachycardia/bradycardia, as well as autonomous arousals. Besides, the Sleep Master software enables the calculation of the quantitative parameters required for the specialist to make a diagnosis.

The software automatically calculates the total sleep time of the patient based on actigraphy which ensures a more accurate calculation of the apnea-hypopnea index (AHI). The specialist can just see the marked episodes and correct them as required. After the test, the software will generate the report according to the selected template.

Monitoring of the CPAP therapy efficacy during sleep

Snorlex can be used together with a CPAP machine for CPAP therapy, which is a recognized technique for treatment of patients with moderate and severe OSA. The CPAP machine and Snorlex respiratory polygraph used together enable evaluation of CPAP therapy efficacy and its impact on all recorded parameters (including breathing, HR, SpO2, snoring). Upon test completion, the software calculates the AHI, oxygen desaturation index (ODI) and others that help the specialist correct the treatment, if necessary.