Determinación y análisis comparativo de gasto cardíaco en enfermos críticos mediante Doppler transesofágico y termodilución en bolos: Experiencia preliminar
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Max Andresen H [1] ; Mauricio Henríquez V [1] ; Marcelo Mercado F [1] ; Gonzalo Farías G [1] ; Carmen Castillo S [1] ; Carlos Benítez G [1] ; Alberto Dougnac L [1]
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[1] Pontificia Universidad Católica de Chile
Pontificia Universidad Católica de Chile
Santiago, Chile
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- Localización: Revista Médica de Chile, ISSN-e 0034-9887, Vol. 133, Nº. 7, 2005, págs. 761-766
- Idioma: español
- Títulos paralelos:
- Comparison of cardiac output measurement in critical patients using transesophageal Doppler or thermodilution: A preliminary report
- Enlaces
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Resumen
Background: Cardiac output can be measured non invasively by transesophageal Doppler. This is an alternative to measure it by thermodilution with a catheter in the pulmonary artery. Aim: To compare both methods of cardiac output measurement. Material and methods: Simultaneous measurement of cardiac output by transesophageal Doppler and thermodilution with a catheter in the pulmonary artery in four male critical patients, aged 60±12 years, hospitalized in a University Hospital. The Bland and Altman method to compare the concordance between two measurements, was used. Results: Forty measurements were performed. The results of both methods had a correlation coefficient of 0.98. According to the Bland and Altman method, the difference between both methods was -0.5 L with a precision of 0.52 L/min (95% confidence interval -1.51 to 0.52 L/min). Considering that a change between two sequential measurements is considered significant when the difference is more than 15%, both measurements agreed in 83% of cases, that there was a change in cardiac output. Conclusions:Transesophageal Doppler is a promising non invasive technique to measure cardiac output in critical care patients. It becomes a valid alternative to the thermodilution technique. This preliminary experience must be confirmed in a larger series
