Answer: 17. Patients should be instructed to fix T-tube and take care of themselves. Pay attention to protect the local area, avoid extracting heavy objects and excessive activities, and prevent falling off. Pour the liquid regularly every day and record it. Change the dressing regularly to avoid infection. Pay attention to protect local skin. Avoid water entering the wound when taking a bath. You should seek medical attention in time when there is prolapse of drainage tube, no liquid extraction or abnormal drainage.