Statistical process monitoring creates a hemodynamic trajectory map after pediatric cardiac surgery: A case study of the arterial switch operation

Author:

Howsmon Daniel P.1ORCID,Mikulski Matthew F.234,Kabra Nikhil5,Northrup Joyce2,Stromberg Daniel234,Fraser Charles D.234,Mery Carlos M.234,Lion Richard P.24ORCID

Affiliation:

1. Department of Chemical and Biomolecular Engineering Tulane University New Orleans Louisiana USA

2. Texas Center for Pediatric and Congenital Heart Disease University of Texas Health Austin and Dell Children's Medical Center Austin Texas USA

3. Department of Surgery and Perioperative Care, Dell Medical School The University of Texas at Austin Austin Texas USA

4. Department of Pediatrics, Dell Medical School The University of Texas at Austin Austin Texas USA

5. Chandra Department of Electrical and Computer Engineering the University of Texas at Austin Austin Texas USA

Abstract

AbstractPostoperative critical care management of congenital heart disease patients requires prompt intervention when the patient deviates significantly from clinician‐determined vital sign and hemodynamic goals. Current monitoring systems only allow for static thresholds to be set on individual variables, despite the expectations that these signals change as the patient recovers and that variables interact. To address this incongruency, we have employed statistical process monitoring (SPM) techniques originally developed to monitor batch industrial processes to monitor high‐frequency vital sign and hemodynamic data to establish multivariate trajectory maps for patients with d‐transposition of the great arteries following the arterial switch operation. In addition to providing multivariate trajectory maps, the multivariate control charts produced by the SPM framework allow for assessment of adherence to the desired trajectory at each time point as the data is collected. Control charts based on slow feature analysis were compared with those based on principal component analysis. Alarms generated by the multivariate control charts are discussed in the context of the available clinical documentation.

Publisher

Wiley

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