• Department of Critical Care Medicine, Jiangxi Province People’s Hospital, Nanchang, Jiangxi 330006, P. R. China;
YANG Chunli, Email: ycl121@163.com
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Objective To evaluate the predictive value of mini-fluid challenge for volume responsiveness in patients under shock.Methods Sixty patients diagnosed as shock were included in the study. A 50 mL infusion of physiological saline over 10 seconds and a further 450 mL over 15 minutes were conducted through the central venous catheter. Cardiac output (CO), global end-diastolic volume index (GEDVI), central venous pressure (CVP) and extravascular pulmonary water index (EVLWI) were monitored by the pulse indicator continuous cardiac output monitoring. If the increase of CO after 500 mL volume expansion (ΔCO500) ≥10%, the patient was considered to be with volume responsiveness. The relevance between ΔCO50 and ΔCO500 was analyzed, and the sensitivity and specificity of the ΔCO50 were analyzed by receiver operating characteristic (ROC) curve.Results After 50 mL volume injection, the heart rate and systolic blood pressure of the two groups did not change obviously. The CVP of non-responders changed slightly higher than that of responders, but neither of them had obviously difference (P>0.05). The CO of responders had increased significantly (P<0.05) which was in accord with that after a further 450 mL volume injection. GEDVI and EVLWI did not change significantly (P>0.05). ΔCO50 and ΔCO500 were strongly correlated (r=0.706, 95%CI 0.677 - 0.891, P>0.05). The area under ROC curve for ΔCO50 was 0.814 (95%CI 0.707 - 0.922).Conclusion The volume responsiveness of patients under shock can be predicted by mini-fluid challenge study which is related to normal volume expansion and it does not increase the risk of pulmonary edema.

Citation: HE Huiwei, YANG Chunli, HE Zhaohui, CHEN Zhi, XIA Wenhan. Predictive value of mini-fluid challenge for volume responsiveness. Chinese Journal of Respiratory and Critical Care Medicine, 2019, 18(5): 469-472. doi: 10.7507/1671-6205.201901057 Copy

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