The comparison of a novel continuous cardiac output monitor based on pulse wave transit time and echo Doppler during exercise
| Autor: | Mami Terao, Yoshihiro Sugo, Teiji Ukawa, Tomoyuki Sakai, Ryoichi Ochiai |
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| Rok vydání: | 2012 |
| Předmět: |
Adult
Male medicine.medical_specialty Cardiac output medicine.diagnostic_test Diagnostic ultrasound Correlation coefficient Pulse (signal processing) Remote patient monitoring business.industry Pulse Wave Analysis Sensitivity and Specificity Echocardiography Doppler Electrocardiography Internal medicine Pulse Wave Transit Time Exercise Test Cardiology medicine Humans Oximetry Cardiac Output business Echo doppler |
| Zdroj: | EMBC |
| DOI: | 10.1109/embc.2012.6345913 |
| Popis: | A new technology called estimated continuous cardiac output (esCCO) uses pulse wave transit time (PWTT) obtained from an electrocardiogram and pulse oximeter to measure cardiac output (CO) non-invasively and continuously. This study was performed to evaluate the accuracy of esCCO during exercise testing. We compared esCCO with CO measured by the echo Doppler aortic velocity-time integral (VTIao_CO). The correlation coefficient between esCCO and VTIao_CO was r= 0.87 (n= 72). Bias and precision were 0.33 ± 0.95 L/min and percentage error was 31%. The esCCO could detect change in VTIao_CO larger than 1 L/min with a concordance rate of 88%. In polar plot, 83% of data are within 0.5 L/min, and 100% of data are within 1 L/min. Those results show the acceptable accuracy and trend ability of esCCO. Change in pre-ejection period (PEP) measured by using M-mode of Diagnostic Ultrasound System accounted for approximately half of change in PWTT. This indicates that PEP included in PWTT has an impact on the accuracy of esCCO measurement. In this study, the validity of esCCO during exercise testing was assessed and shown to be acceptable. The result of this study suggests that we can expand its application. |
| Databáze: | OpenAIRE |
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