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Pattern Recognition Algorithms for Predicting Surgical Site Infection in Abdominal Hysterectomy

Published online by Cambridge University Press:  02 November 2020

Flávio Souza
Affiliation:
Centro Universitário de Belo Horizonte (UNIBH)
Braulio Couto
Affiliation:
Centro Universitário de Belo Horizonte
Felipe Leandro Andrade da Conceição
Affiliation:
Centro Universitário de Belo Horizonte
Gabriel Henrique Silvestre da Silva
Affiliation:
Centro Universitário de Belo Horizonte
Igor Gonçalves Dias
Affiliation:
Centro Universitário de Belo Horizonte
Rafael Vieira Magno Rigueira
Affiliation:
Centro Universitário de Belo Horizonte
Gustavo Maciel Pimenta
Affiliation:
Centro Universitário de Belo Horizonte
Maurilio Martins
Affiliation:
Centro Universitário de Belo Horizonte
Julio Cesar Mendes
Affiliation:
Centro Universitário de Belo Horizonte
Amanda Martins Fagundes
Affiliation:
Centro Universitário de Belo Horizonte
Beatriz Viana Ferreira Escalda
Affiliation:
Centro Universitário de Belo Horizonte
Isabela Marques de Souza
Affiliation:
Centro Universitário de Belo Horizonte
Laura Ferraz de Vasconcelos
Affiliation:
Centro Universitário de Belo Horizonte
Maria Eduarda Rodrigues Medeiros
Affiliation:
Centro Universitário de Belo Horizonte
Thais Azevedo de Almeida
Affiliation:
Centro Universitário de Belo Horizonte
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Abstract

Background: This research represents an experiment based in surgical site infection (SSI) to patients undergoing abdominal hysterectomy surgery procedures in hospitals in Belo Horizonte, (population, 3 million). We statistically evaluated such incidences and studied the SSI prediction power of pattern recognition algorithms, the artificial neural networks based in multilayer perceptron (MLP). Methods: Between July 2016 and June 2018, data on SSI were collected by the hospital infection control committees (CCIH) of the 3 hospitals involved in the research. They collected all data used in the analysis during their routine SSI surveillance procedures. The information was forwarded to the NOIS (Nosocomial Infection Study) Project, which used SACIH (ie, automated hospital infection control system software) to collect data from a sample of hospitals participating voluntarily in the project. After data collection, 3 procedures were performed for SSI prediction: (1) a treatment of the database collected for the use of intact samples; (2) a statistical analysis on the profile of the hospitals collected; and (3) an assessment of the predictive power of 5 types of MLP (ie, backpropagation standard, momentum, resilient propagation, weight decay, and quick propagation). MLPs were tested with 3, 5, 7, and 10 hidden-layer neurons and a database split for the resampling process (65% or 75% for testing, 35% or 25% for validation). They were compared by measuring area under the curve (AUC; range, 0–1) presented for each of the configurations. Results: From 1,166 records collected, only 665 records were enabled for analysis. Regarding statistical data: the average duration of surgery was 100 minutes (range, 31–180); patients were aged 41–49 years; the SSI rate was low (only 10 cases); the average length of stay was 2 days; and there were no deaths among the cases. Moreover, 29% of the operative sites were contaminated and 57% were potentially contaminated, revealing a high rate of potential contamination in the operative sites. The prediction process achieved 0.995. Conclusions: Despite the noise in the database, it was possible to obtain a relevant sampling to evaluate the profile of hospitals in Belo Horizonte. In addition, for the predictive process, although some settings achieved AUC results of 0.5, others achieved and AUC of 0.995, indicating the promise of the automated SSI monitoring framework for abdominal hysterectomy surgery (available in www.sacihweb.com). To optimize data collection and to enable other hospitals to use the SSI prediction tool, a mobile application was developed.

Funding: None

Disclosures: None

Type
Poster Presentations
Copyright
© 2020 by The Society for Healthcare Epidemiology of America. All rights reserved.

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