Using Signal Features of Functional Near-Infrared Spectroscopy for Acute Physiological Score Estimation in ECMO Patients

Bioengineering (Basel). 2023 Dec 26;11(1):26. doi: 10.3390/bioengineering11010026.

Abstract

Extracorporeal membrane oxygenation (ECMO) is a vital emergency procedure providing respiratory and circulatory support to critically ill patients, especially those with compromised cardiopulmonary function. Its use has grown due to technological advances and clinical demand. Prolonged ECMO usage can lead to complications, necessitating the timely assessment of peripheral microcirculation for an accurate physiological evaluation. This study utilizes non-invasive near-infrared spectroscopy (NIRS) to monitor knee-level microcirculation in ECMO patients. After processing oxygenation data, machine learning distinguishes high and low disease severity in the veno-venous (VV-ECMO) and veno-arterial (VA-ECMO) groups, with two clinical parameters enhancing the model performance. Both ECMO modes show promise in the clinical severity diagnosis. The research further explores statistical correlations between the oxygenation data and disease severity in diverse physiological conditions, revealing moderate correlations with the acute physiologic and chronic health evaluation (APACHE II) scores in the VV-ECMO and VA-ECMO groups. NIRS holds the potential for assessing patient condition improvements.

Keywords: acute physiologic and chronic health evaluation II (APACHE II) scoring system; extracorporeal membrane oxygenation (ECMO); microcirculation; near-infrared spectroscopy (NIRS); support vector machine (SVM).

Grants and funding

This work was supported in part by the Ministry of Science and Technology, Grant/Award Numbers: 112-2221-E-A49-047-MY3, 112-2811-E-A49-535-MY2, 110-2221-E-075-002, 109-2221-E-009-018-MY3, 109-2811-E-009-532-MY3, and 110-2221-E-075-001-MY3.