If the patient is drowning, the patient should be removed from the drowning environment as soon as possible, and cardiopulmonary resuscitation should be performed on a flat surface. In addition, the patient should be given circulatory stabilization, body temperature regulation, and warmth treatment as much as possible. Patients should be monitored closely for 48 hours for heart, blood pressure, pulse, oxygen saturation, urine output, etc. Symptomatic treatment should be given, such as correction of arrhythmias, etc., and complications should be prevented.