Constipation is not allowed to eat lactulose on the day of surgery, and you need to fast from food and water for at least 8 hours before surgery.
Constipation is a disease in which the number of bowel movements is reduced and the stools are dry and difficult to pass. The main manifestations of patients are reduced frequency of defecation, defecation effort, and the feeling of incomplete evacuation. In serious cases, it may even be combined with anal fissure, blood in the stool, rectal prolapse and so on. Generally the first use of drug treatment, commonly used drugs are lactulose, polyethylene glycol, senna and so on.
If medication is ineffective and constipation seriously affects daily life, surgical treatment can be chosen, and the commonly used surgical methods are total colon resection or subtotal colon resection. Generally speaking, the day before the surgery, after 10:00 p.m., should be fasting water, to avoid vomiting caused by the patient after the surgery of general anesthesia aspiration. Therefore, oral lactulose is also not allowed on the day of surgery.
The above drugs are recommended to be used under the guidance of a doctor.