Transpulmonary thermodilution assessments: Precise measurements require a precise procedure

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Abstract

When incorporating the values of a hemodynamic parameter into the care of patients, the precision of the measurement method should always be considered. A prospective analysis in the previous issue of Critical Care showed that the precision of transpulmonary thermodilution (TPTD) allows for reliable mean values if a standardised procedure is used. The present finding has a physiological basis, as TPTD requires a more prolonged transit time, which in turn reduces the effects that airway pressure and arrhythmia have on venous return-cardiac output steady states. Moreover, this result suggests that the current accepted threshold value of a 15% increase in cardiac output to identify a positive response to a fluid challenge could be reduced in the future. Indeed, this value is mainly related to the precision of the pulmonary artery catheter. © 2011 BioMed Central Ltd.

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Giraud, R., Siegenthaler, N., & Bendjelid, K. (2011, October 12). Transpulmonary thermodilution assessments: Precise measurements require a precise procedure. Critical Care. https://doi.org/10.1186/cc10459

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