Assessment of cardiac output changes using a modified FloTrac/Vigileo algorithm in cardiac surgery patients.

Crit Care · 2009 · PMC2689464 · PMID 19261180

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showed a trendno p-value reported

In contrast to the FloTrac/VigileoTM system, however, the PiCCOplusTM system showed a trend to underestimate cardiac output changes assessed by the reference technique.

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a reliable trendno p-value reported

set-up of monitoring devices, predefined measurement points during the perioperative course of cardiac surgery, measurements taken early after cardiopulmonary bypass) may impede a reliable trend analysis.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.