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Assessment of macro- and micro-oxygenation parameters during fractional fluid infusion: A pilot study.

Abstract：

PURPOSE:The main goal of this study was to assess whether maximal fluid infusion improves both oxygen delivery (DO2) and micro-circulatory parameters during hemodilution. The secondary objective was to assess the ability of baseline micro-circulatory parameters to predict oxygen consumption (VO2) response following fluid infusion. MATERIALS AND METHODS:In a postoperative cardiac ICU, patients received repeated fluid infusion until stroke volume (SV) was maximized. Before and after each fluid expansion, macro- (DO2, VO2) and micro-circulatory oxygenation parameters were recorded [central venous oxygen saturation (ScVO2), blood lactate, difference in veno-arterial carbon dioxide tension (P(v-a)CO2), somatic and cerebral oxygen saturation (rSO2)]. Patients were classified as VO2-Responders or VO2-Non-Responders according to an increase in VO2 above or below 15%, respectively. RESULTS:After maximal fluid infusion, all patients showed improved macro- and micro-circulatory oxygenation parameters, but VO2-Responders had lower values (especially for ScVO2 and cerebral rSO2). Only baseline ScVO2 and cerebral rSO2 were useful to predict the VO2 response to maximal fluid infusion (ROCAUC 0.80 (95% CI: 0.54-0.95, P=0.012) and 0.83 (95% CI: 0.57-0.96, P=0.001). CONCLUSIONS:Maximal fluid infusion improves macro- and micro-circulatory oxygenation parameters. For VO2-Responders, only ScVO2 and cerebral rSO2 could serve as markers of tissue hypoxia.

journal_name

J Crit Care

journal_title

Journal of critical care

authors

Fischer MO,Bonnet V,Lorne E,Lefrant JY,Rebet O,Courteille B,Lemétayer C,Parienti JJ,Gérard JL,Fellahi JL,Hanouz JL,French Hemodynamic Team.

doi

10.1016/j.jcrc.2017.03.021

subject

Has Abstract

pub_date

2017-08-01 00:00:00

pages

91-98

eissn

0883-9441

issn

1557-8615

pii

S0883-9441(16)30885-1

journal_volume

40

pub_type

杂志文章

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