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Hydra, a Computer-Based Platform for Aiding Clinicians in Cardiovascular Analysis and Diagnosis
Published on: September 26, 2018
New approaches for improving cardiovascular risk assessment
Simão Paredes1, Teresa Rocha1, Diana Mendes2
1Polytechnic Institute of Coimbra (IPC/ISEC), Computer Science and Systems Engineering Department, Rua Pedro Nunes, 3030-199 Coimbra, Portugal; CISUC, Center for Informatics and Systems of University of Coimbra, University of Coimbra, Pólo II, 3030-290 Coimbra, Portugal.
Insights
This study introduces a new framework to improve cardiovascular risk assessment tools, enhancing their reliability for better clinical decision-making in predicting cardiovascular death. The novel approach shows promising results in initial patient data analysis.
Area of Science:
- Cardiology
- Medical Informatics
Background:
- Clinical guidelines advocate for cardiovascular risk assessment tools (risk scores) to predict cardiovascular death and aid decision-making.
- Current risk scores have limitations impacting their reliability in clinical settings.
- Cardiovascular disease (CVD) poses significant social and economic burdens.
Purpose of the Study:
- To present a novel framework designed to enhance existing cardiovascular risk assessment tools.
- To minimize the limitations of current risk scores and improve their clinical reliability.
- To aid in more accurate prediction of cardiovascular events.
Main Methods:
- Developed a framework combining data from multiple sources, including existing risk scores and physician input.
- Implemented a personalization scheme to group patients and identify the most suitable risk assessment tool for individual cases.
- Applied two distinct methodologies for data processing and patient stratification.
Main Results:
- Validation performed on a dataset of 460 patients with non-ST-segment elevation acute coronary syndrome.
- The proposed approaches demonstrated promising performance metrics, including sensitivity, specificity, and geometric mean.
- Specific performance metrics achieved were 78.79% sensitivity, 73.07% specificity, and 75.87% geometric mean for one approach, and 75.69%, 69.79%, and 72.71% for the other.
Conclusions:
- The developed approaches show superior performance compared to current cardiovascular disease risk scores.
- Further validation with additional datasets is recommended to substantiate these findings.
- The framework offers a potential improvement in predicting cardiovascular risk.
Introduction And Objectives:
Clinical guidelines recommend the use of cardiovascular risk assessment tools (risk scores) to predict the risk of events such as cardiovascular death, since these scores can aid clinical decision-making and thereby reduce the social and economic costs of cardiovascular disease (CVD). However, despite their importance, risk scores present important weaknesses that can diminish their reliability in clinical contexts. This study presents a new framework, based on current risk assessment tools, that aims to minimize these limitations.
Methods:
Appropriate application and combination of existing knowledge is the main focus of this work. Two different methodologies are applied: (i) a combination scheme that enables data to be extracted and processed from various sources of information, including current risk assessment tools and the contributions of the physician; and (ii) a personalization scheme based on the creation of patient groups with the purpose of identifying the most suitable risk assessment tool to assess the risk of a specific patient.
Results:
Validation was performed based on a real patient dataset of 460 patients at Santa Cruz Hospital, Lisbon, Portugal, diagnosed with non-ST-segment elevation acute coronary syndrome. Promising results were obtained with both approaches, which achieved sensitivity, specificity and geometric mean of 78.79%, 73.07% and 75.87%, and 75.69%, 69.79% and 72.71%, respectively.
Conclusions:
The proposed approaches present better performances than current CVD risk scores; however, additional datasets are required to back up these findings.
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