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Minerva Anestesiologica 2017 September;83(9):939-46

DOI: 10.23736/S0375-9393.17.11544-0

Copyright © 2017 EDIZIONI MINERVA MEDICA

lingua: Inglese

Prediction of fluid responsiveness based on liver compression-induced blood pressure changes in children after cardiac surgery

Ji-Hyun LEE, In-Kyung SONG, Eun-Hee KIM, Hee-Soo KIM, Jin-Tae KIM

Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, South Korea


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BACKGROUND: This study evaluated whether liver compression-induced blood pressure changes can predict fluid responsiveness in children after cardiac surgery.
METHODS: Children aged <5 years who were undergoing cardiac surgery were evaluated after the sternum was closed. Before fluid loading, the right upper abdomen was compressed at a pressure of 30 mmHg for 15 seconds and changes in blood pressure waves were recorded. Then, 10 mL/kg of colloid solution was administered. Systolic arterial pressure (SAP), diastolic arterial pressure (DAP), central venous pressure (CVP), systolic pressure variation (SPV), stroke volume, and respiratory variation in aortic blood flow peak velocity (ΔVpeak) were measured before and after fluid loading. A volume responder was defined as >15% increase in Stroke Volume Index.
RESULTS: There were 17 responders and 13 non-responders. During liver compression, mean percent increase in DAP (ΔDAP) was significantly higher in the responder group (10.5%) than in the non-responder group (5.4%) (P=0.008). A ΔDAP of 5% during liver compression and a ΔVpeak of >12% were able to predict fluid responsiveness (P=0.01 and 0.02, respectively). However, changes in SAP during liver compression, SPV, and CVP had no predictive value. The area under the receiver operating characteristic curve of ΔDAP and ΔVpeak were 0.778 and 0.765, respectively.
CONCLUSIONS: ΔDAP induced by liver compression and ΔVpeak can be used to predict fluid responsiveness in mechanically ventilated children. Liver compression can be a simple and practical method to assess volume status in children.


KEY WORDS: Blood pressure - Cardiac output - Echocardiography - Fluid therapy - Stroke volume

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