Postoperative patients often take a semi-supine position, but they can't use it.

After traditional inguinal hernia repair. The correct posture of semi-supine position is to raise the upper body by 30 ~ 45 degrees on the basis of supine position, which is similar to reclining, but not too high. Most patients adopt semi-supine position after operation, but traditional inguinal hernia repair can not be used. The semi-recumbent position is suitable for patients with dyspnea caused by cardiopulmonary diseases, acute left heart failure after head and neck surgery, abdominal and pelvic organ surgery, or patients with weak constitution.