Diagnosis of irrigating solution absorption syndrome (Collins, Ishio, Michielsen, Porter M): + Neurological symptoms: nausea, vomiting, headache, irritation, confusion, restlessness, convulsions, coma; or respiratory, circulatory symptoms: chest pain, shortness of breath, increased BP followed by hypotension, bradycardia, arrhythmia, respiratory failure, cardiogenic shock or acute pulmonary edema + Subclinical symptoms: blood sodium concentration: when there are ≥2 clinical symptoms, get emergency test samples; if Na + <125 mmol / l is a diagnostic confirmation (Miyao H, Porter M, Ishio J, Collins J W).