Mini-fluid challenge predicts fluid responsiveness during spontaneous breathing under spinal anaesthesia: An observational study.

BACKGROUNDThe ability to predict fluid responsiveness in spontaneously breathing patients under spinal anaesthesia is desirable.OBJECTIVEThe objective of this study was to test whether variations in stroke volume (SV) in response to a fixed mini-fluid challenge (ΔSV100) measured by thoracic impedanc