- Opinion of the treating clinical team that patient was well resuscitated and sufficiently clinically stable for the intervention or by noninvasive or invasive measurements i.e. fluid accumulation at least 5% plus at least one of the following e.g. chest radiography, central venous pressure ≥ 8 mmHg, pulse pressure variation < 13%, inferior vena cava collapsibility index < 50% in spontaneously breathing patients or distensibility index < 18% in mechanically ventilated patients