J Clin Monit Comput - Impact of changes in systemic vascular resistance on a novel non-invasive continuous cardiac output measurement system based on pulse wave transit time: a report of two cases.

Tópicos

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Resumo

The inaccuracy of arterial waveform analysis for measuring continuos cardiac output (CCO) associated with changes in systemic vascular resistance (SVR) has been well documented. A new non-invasive continuous cardiac output monitoring system (esCCO) mainly utilizing pulse wave transit time (PWTT) in place of arterial waveform analysis has been developed. However, the trending ability of esCCO to measure cardiac output during changes in SVR remains unclear. After a previous multicenter study on esCCO measurement, we retrospectively identified two cases in which apparent changes in SVR developed in a short period during data collection. In each case, the trending ability of esCCO to measure cardiac output and time component of PWTT were analyzed. Recorded data suggest that the time component of PWTT may have a significant impact on the accuracy of estimating stroke volume during changes in SVR. However, further prospective clinical studies are required to test this hypothesis.

Resumo Limpo

inaccuraci arteri waveform analysi measur continuo cardiac output cco associ chang system vascular resist svr well document new noninvas continu cardiac output monitor system escco main util puls wave transit time pwtt place arteri waveform analysi develop howev trend abil escco measur cardiac output chang svr remain unclear previous multicent studi escco measur retrospect identifi two case appar chang svr develop short period data collect case trend abil escco measur cardiac output time compon pwtt analyz record data suggest time compon pwtt may signific impact accuraci estim stroke volum chang svr howev prospect clinic studi requir test hypothesi

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