What position should the patient take during abdominal catheterization?

The patient may be in decubitus, semi-decubitus or lateral decubitus position, which is related to the condition and can be arranged by the doctor.
How much water is discharged each time when the abdomen is pierced?
The water through the abdomen should not be too much or too fast, generally no more than 3 000 mL each time, and it should be released slowly within 2 hours. Excessive discharge of fluid can induce electrolyte disturbance and hepatic encephalopathy.