Dive into the last two abstracts published by the EnsoData team at SLEEP 2021

Dive into the brief overviews of our final two poster-worthy research abstracts. 

From new and even larger clinical validation results on our AI scoring, to enhancements to our AI’s capabilities, our research team dove deep into the data to discover how we can continue to find ways to make a positive impact on the world of sleep medicine. If you missed our first four abstracts in part one, make sure to jump over and give that a read, as well! But with that said, let’s dive into our final two abstracts. 

Sleep 2021 Abstract Preview

Clinical Validation of AI Scoring in Adult and Pediatric Patients

We would be crazy not to continue improving our AI sleep scoring solution, and while we don’t want to bore you with numbers, this is that point in the adventure. In our “Clinical Validation of AI Scoring in Adult and Pediatric Clinical PSG Samples Compared to Prospective, Double-Blind Scoring Panel” study, our team sought to set a new standard for AI-assisted sleep scoring and staging. For many doubters, there is still not enough data validation on the ability of AI in sleep scoring. To that end, we conducted the largest ever study of AI’s ability to analyze sleep, which includes roughly 3 times more data points than the next largest sleep study of this kind, (that we can find – if we’re wrong, please let us know.) The dataset is also very diverse, with a wide variety of demographic differences, including age, gender, BMI, medical conditions, medications, and other characteristics. Using this massive data set, we put EnsoSleep to work. And the numbers speak for themselves. You can see in the table below, that the agreement levels are quite impressive. 

Beyond that, we share data on the latest sleep events our AI model can analyze including: improved sleep staging, OSA, CSA, hypopneas, arousals, limb movements, Cheyne-Stokes respiration, periodic breathing, atrial fibrillation, plus normative, mild, moderate, and severe OSA categories for global-AHI and REM-AHI, among other events. Let’s look at these metrics for our Adult data here on specific sleep scoring event detection:

Sleep Scoring Event Detection - Adults

Pediatric sleep testing is critical to identifying pediatric sleep conditions and we wanted to validate AI scoring on pediatric sleep studies. As it was with our adult sample, the data performance speaks for itself across the 26 event types and 8 AHI-categories. Dive into the full abstracts for the detailed data. At the end of the day, with all medical diagnostic testing, the most important aspect is getting the diagnosis identified accurately and efficiently. This research aims to bring that consistency to sleep testing.

Clinical Validation of AI Analysis of PPG Based Sleep-Wake Staging, Total Sleep Time, and Respiratory Rate

For the “Clinical Validation of AI Analysis of Photoplethysmogram (PPG) Based Sleep-Wake Staging, Total Sleep Time, and Respiratory Rate” study, we collaborated closely with Dr. Nathaniel Watson, MD, University of Washington. Together, we sought to tackle a hot topic with the current landscape in the sleep market-the HSAT explosion. However, with HSAT innovation comes challenges, especially when compared to one of the more complex diagnostic exams in the PSG test. In that vein, there are still major challenges for device companies to achieve the same resolution of data from HSAT tests as PSGs. One area that is particularly challenging is in determining the total sleep time (TST), where traditionally EEG data is used to determine sleep versus wake, rather than what most HSAT devices record: only cardiovascular and respiratory data.  

Why is total sleep time important? The TST is one of several data points used in determining the overall AHI of a patient. We wanted to see how the EnsoSleep algorithm could perform with a PPG-only dataset, and if the AI model could learn and identify TST at comparable levels to current methods. The biggest takeaway from our research – though there are many from this particular abstract – is what the agreement levels seen with total sleep time (TST) mean for the HSAT market. This model was built for instances when EEG data is not available, which is the case for many HSAT devices. 

We hope this research will support the growth of HSATs by increasing total sleep time accuracy and reliability among various HSAT device types, which in turn, helps improve diagnoses. And while we only really dive into the TST implications here, this research has other massive implications for consumer sleep technology, HSAT accuracy, and inpatient sleep monitoring. 

(P.S. If you’re a device manufacturer and would like to connect with our partnerships liaison, let us know in the comments of a Contact Message.)

Read the Complete SLEEP 2021 Abstracts

Dive into the full abstracts for all 6 of our research pieces in the SLEEP 2021 conference poster hall. We’re really excited for the virtual event this year, so make sure you stop by our booth!  And if you haven’t already, you should check out part one of the Abstract series.