Polysomnography (PSG) systems are used to record and analyze sleep studies set up and supervised by sleep medicine professionals in a sleep laboratory. Compare PSG equipment on parameters such as reporting, lab management software details, amplifier specifications, video options, and more.

Company:Cadwell Industries IncCompumedicsNatus Medical IncNeurovirtualNox MedicalSOMNOmedics America Inc
PSG System:Easy IIIGrael 4K PSG:EEG with Profusion Sleep SoftwareNatus SleepWorks with Embla NDx or SDxBWIII PSG PlusNox A1sSOMNOscreen HD with DOMINO Software
The Easy III PSG system lets you record crystal clear signals with 4kHz sampling rate and bedside impedance checks. Protect your equipment with the remote input box and ensure recording integrity and provide patient convenience during in-lab sleep studies.
For those with a need for clearer, more precise data for sleep studies and a more advanced capabilities in data analysis and data management, the high-definition package from Compumedics delivers. It includes the latest digital amplifier technology and advanced applications software with available tools such as CAPS analysis and ECG analysis.Embla NDx-102 channels, SDx-58; both with derived channels, nasal pressure, & built-in oximeter. Touchscreen base allows bedside impedance and biocals. SleepWorks offers review and analysis of PSG data & video during collection, and an integrated SQL distributed database enhances workflow on PCs with role based security and support for Microsoft BitLocker drive encryption.Equipped with 50 channels, the BW3 performs clinical PSG and EEG from the same hardware and software platform. Hardware is portable via carrying case or can be permanently installed. Dual electrode/sleep sensor inputs on the head box and amplifier provide flexibility. Built-in pressure transducer on both head box and amplifier. Built-in Nonin pulse oximeter module.Hospital-to-home sleep diagnostic system with wireless design and versatility. A full PSG in-lab system with the ability to work as a home sleep test. Designed for easy hookup experience with wireless connectivity, a tablet application for mobile flexibility, continuous impedance control, calibrated Nox RIP technology, and built-in microphone. SOMNOmedics’ most powerful & flexible sleep diagnostic tool­—ambulatory or stationary; as a screener, PSG, EEG32—all with the same device. HD touch screen; true wireless technology & wireless PLMs; automatic sensor & electrode recognition—making montages a thing of the past; PC independent setup, bio-calibration & impedance check at bedside. FDA approval for pediatric use.
Warranty (years):111222
PSG Software Year Introduced:200720142003201720212007
PSG Software Date of Current Version:2022, April2019202020232021, September2021, August
PSG Software Duration of Included Updates:for product lifetimewithin-version updateswithin-version updatesfor product lifetimefor product lifetimefor product lifetime
PSG Software Included Manufacturer Reports:Defaults and custom reports included with new installation.AASM and CMS classification reports. Physician interpretation and diagnostic and split night reports.Adult & pediatric diagnostic, split, titration, MSLT/MWT tabular & interpretation reports.All PSG software manufacturer reports included.All reports are included with the purchase.User-defined reports according to modifiable templates as well as customer-specific reports.
PSG Software Users Can Create Reports:YesYesYesYesYesYes
PSG Software Manufacturer Can Create Reports:YesYes (fees applicable)YesYesYesYes (fees applicable)
PSG Software Same as HST Software:YesYesYesYesYesYes
Lab Management Software Database Type:ProprietarySQL-basedSQL-basedSQL-basedFile formatMS SQL, Access (MDB), My SQL, SQL Light
Lab Management Software HL 7 Enabled:YesYesYesYesYesOptional
Year Amplifiers Introduced:200720162019201220212016
Amplifiers Sampling Rate (Hz):4,00016,3844,0962,000512 kHzup to 4,000
Amplifier Storage Rate (Hz):2504,096256 – 4,096500200up to 4,000
Amplifiers Transmission Mode:Cat5/6Cat5e/6TCP/IP or USBTCP/IPBluetooth/Cat5Wireless
Amplifiers Impedance Checks:
Tablet at bedside, software
Control roomControl room, bedside base unitControl room, bedsideControl room, tablet at bedsideControl room PC, device HD touchscreen at bedside, tablet
Video Available Lens Types:Varifocal fixed and PTZFixed focus and PTZPTZ (standard or high-definition)Fixed focus with digital zoom
and PTZ with optical zoom
PTZ and fixed focusVarious video options available
Video Adjustable Frame Rate During Collection:NoNoYesYesYesYes
Video Post-acquisition Editing:YesYesYesYesYesYes
Last updated October 2023. A version of this guide published in the Oct 2023 print issue.

Information for this guide based on data submitted by PSG equipment marketers. Sleep Review strives for accuracy in all data but cannot be held responsible for claims made by marketers. All PSG marketers get one listing at no charge. Advertisers are offered multiple listings. All services may not be included. We plan to update this guide once a year. Email editor[at]sleepreviewmag.com to be considered for the next update.

Read the digital edition of our Annual Product Guide (2023) for more comparison charts.