Comparison between continuous non-invasive estimated cardiac output by pulse wave transit time and thermodilution method
| Autor: | Preet Mohinder Singh, Gerald Dubowitz, Ashish C. Sinha, Mansoor M. Aman, Navneet K Grewal |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Adult
Male lcsh:Diseases of the circulatory (Cardiovascular) system medicine.medical_specialty Cardiac output medicine.medical_treatment Thermodilution Pulse Wave Analysis Standard deviation law.invention lcsh:RD78.3-87.3 Young Adult law Internal medicine Monitoring Intraoperative Continuous cardiac output monitor Non-invasive cardiac output measurement Pulse wave transit time Pulse Wave Transit Time medicine Humans Prospective Studies Cardiac Output Aged Monitoring Physiologic Aged 80 and over business.industry Non invasive Pulmonary artery catheter Reproducibility of Results General Medicine Gold standard (test) Middle Aged Intensive care unit Confidence interval Surgery Anesthesiology and Pain Medicine lcsh:Anesthesiology lcsh:RC666-701 Catheterization Swan-Ganz Cardiology Female Cardiology and Cardiovascular Medicine business |
| Zdroj: | Annals of Cardiac Anaesthesia, Vol 17, Iss 4, Pp 273-277 (2014) |
| ISSN: | 0974-5181 |
| Popis: | Aims and Objectives: Cardiac output (CO) measurement is essential for many therapeutic decisions in anesthesia and critical care. Most available non-invasive CO measuring methods have an invasive component. We investigate "pulse wave transit time" (estimated continuous cardiac output [esCCO]) a method of CO measurement that has no invasive component to its use. Materials and Methods: After institutional ethical committee approval, 14 adult (21-85 years) patients undergoing surgery and requiring pulmonary artery catheter (PAC) for measuring CO, were included. Postoperatively CO readings were taken simultaneously with thermodilution (TD) via PAC and esCCO, whenever a change in CO was expected due to therapeutic interventions. Both monitoring methods were continued until patients′ discharge from the Intensive Care Unit and observer recording values using TD method was blinded to values measured by esCCO system. Results: Three hundred and one readings were obtained simultaneously from both methods. Correlation and concordance between the two methods was derived using Bland-Altman analysis. Measured values showed significant correlation between esCCO and TD ( r = 0.6, P < 0.001, 95% confidence limits of 0.51-0.68). Mean and (standard deviation) for bias and precision were 0.13 (2.27) L/min and 6.56 (2.19) L/min, respectively. The 95% confidence interval for bias was - 4.32 to 4.58 L/min and for precision 2.27 to10.85 L/min. Conclusions: Although, esCCO is the only true non-invasive continuous CO monitor available and even though its values change proportionately to TD method (gold standard) with the present degree of error its utility for clinical/therapeutic decision-making is questionable. |
| Databáze: | OpenAIRE |
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