Masimo Root® with a Multimodal Brain Monitoring Algorithm May Improve Postoperative Neurocognition in Elderly Patients
This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20211107005135/en/
Masimo Root® with SedLine®, O3®, and ANI® (Photo: Business Wire)
Noting that perioperative neurocognitive disorder (PND) is common in elderly patients undergoing surgery, and that PND has been associated with levels of sedation, analgesia, and cerebral oxygen saturation, the researchers sought to evaluate whether use of an algorithm designed around related parameters could help improve this population’s postoperative neurocognition. They enrolled 26 patients aged ≥ 65 scheduled to undergo spinal surgery and divided them randomly into an intervention group (n=14) and a control group (n=12). In the intervention group, anesthesia was managed using the algorithm, which incorporated Sedline Patient State Index (PSi) and Spectral Edge Frequency (SEF), O3 regional cerebral oxygen saturation (rSO2), ANI pain index, mean arterial pressure (MAP), end-tidal CO2 (PETCO2), hemoglobin (Hb), and temperature. The control group received routine anesthesia management. To evaluate whether the algorithm improved cognitive function, they a) compared the patients’ Montreal Cognitive Assessment (MoCA) score before and 7 days after surgery, b) analyzed the amplitude of low-frequency fluctuation (ALFF) and brain functional connectivity (FC) after MRI, c) measured serum C-reactive protein (CRP) and lipopolysaccharide levels, and d) analyzed the correlation between FC and changes in inflammatory marker levels.
The researchers found that the mean postoperative MoCA score was higher in the intervention group (24.80 ± 2.09) than in control group (22.56 ± 2.24) (p = 0.04), with no significant difference in the incidence of PND between the groups. (The MoCA score was also higher in the intervention group than in the control group preoperatively, but to a lesser degree than postoperatively.) They also found that patients in the intervention group had significantly increased ALFF values in several brain regions after surgery (p < 0.05) and enhanced FC between the left hippocampus and several regions (p < 0.05), which was negatively correlated with the change in serum CRP (pre- vs. post-intervention) (r = -0.58, p = 0.01).
The authors concluded that “anesthesia management based on multimodal brain monitoring under general anesthesia may improve the postoperative cognitive function and brain function connectivity in elderly patients undergoing spinal surgery compared to routine anesthesia management, as evidenced by increased brain activity (ALFF), enhanced FC, higher MoCA score, and reduced systemic inflammation. The extent of postoperative systemic inflammation was negatively associated with the FC enhancement and may be accompanied by a lower MoCA score. Our findings provide a basis for more effective management of elderly patients who undergo surgery to reduce the risk of cognitive disorders and improve brain function.
@Masimo | #Masimo
Masimo (NASDAQ: MASI) is a global medical technology company that develops and produces a wide array of industry-leading monitoring technologies, including innovative measurements, sensors, patient monitors, and automation and connectivity solutions. Our mission is to improve patient outcomes and reduce the cost of care. Masimo SET® Measure-through Motion and Low Perfusion™ pulse oximetry, introduced in 1995, has been shown in over 100 independent and objective studies to outperform other pulse oximetry technologies.2 Masimo SET® has also been shown to help clinicians reduce severe retinopathy of prematurity in neonates,3 improve CCHD screening in newborns,4 and, when used for continuous monitoring with Masimo Patient SafetyNet™ in post-surgical wards, reduce rapid response team activations, ICU transfers, and costs.5-8 Masimo SET® is estimated to be used on more than 200 million patients in leading hospitals and other healthcare settings around the world,9 and is the primary pulse oximetry at 9 of the top 10 hospitals as ranked in the 2021-22
ORi and RPVi have not received FDA 510(k) clearance and are not available for sale in
Yang S, et al, (2021) Management Based on Multimodal Brain Monitoring May Improve Functional Connectivity and Post-operative Neurocognition in Elderly Patients Undergoing Spinal Surgery. Frontiers Aging Neurosci.
15 July 2021. 13:705287. doi: 10.3389/fnagi.2021.705287
- Published clinical studies on pulse oximetry and the benefits of Masimo SET® can be found on our website at http://www.masimo.com. Comparative studies include independent and objective studies which are comprised of abstracts presented at scientific meetings and peer-reviewed journal articles.
- Castillo A et al. Prevention of Retinopathy of Prematurity in Preterm Infants through Changes in Clinical Practice and SpO2 Technology. Acta Paediatr. 2011 Feb;100(2):188-92.
- de-Wahl Granelli A et al. Impact of pulse oximetry screening on the detection of duct dependent congenital heart disease: a Swedish prospective screening study in 39,821 newborns. BMJ. 2009;Jan 8;338.
- Taenzer A et al. Impact of pulse oximetry surveillance on rescue events and intensive care unit transfers: a before-and-after concurrence study. Anesthesiology. 2010:112(2):282-287.
- Taenzer A et al. Postoperative Monitoring – The Dartmouth Experience. Anesthesia Patient Safety Foundation Newsletter. Spring-Summer 2012.
McGrath S et al. Surveillance Monitoring Management for General Care Units: Strategy, Design, and Implementation.
The Joint Commission Journal on Quality and Patient Safety. 2016 Jul;42(7):293-302.
- McGrath S et al. Inpatient Respiratory Arrest Associated With Sedative and Analgesic Medications: Impact of Continuous Monitoring on Patient Mortality and Severe Morbidity. J Patient Saf. 2020 14 Mar. DOI: 10.1097/PTS.0000000000000696.
- Estimate: Masimo data on file.
This press release includes forward-looking statements as defined in Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934, in connection with the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, among others, statements regarding the potential effectiveness of Root®, SedLine®, O3®, ANI®, and the multimodal algorithm incorporating these measurements (the “Algorithm”). These forward-looking statements are based on current expectations about future events affecting us and are subject to risks and uncertainties, all of which are difficult to predict and many of which are beyond our control and could cause our actual results to differ materially and adversely from those expressed in our forward-looking statements as a result of various risk factors, including, but not limited to: risks related to our assumptions regarding the repeatability of clinical results; risks related to our belief that Masimo's unique noninvasive measurement technologies, including Root, SedLine, O3, and ANI, contribute to positive clinical outcomes and patient safety; risks that the researchers’ conclusions and findings about the Algorithm may be inaccurate, risks related to our belief that Masimo noninvasive medical breakthroughs provide cost-effective solutions and unique advantages; risks related to COVID-19; as well as other factors discussed in the "Risk Factors" section of our most recent reports filed with the