Hirschsprung's disease can occur due to the low tension of colonic muscle layer. When forcibly defecating, the increase of intra-abdominal pressure can cause or aggravate hemorrhoids, and when forcibly defecating, the anal canal is damaged, which can cause anal fissure and other perianal diseases. Intestinal obstruction, fecal ulcer, urinary retention and fecal incontinence will occur after fecal impaction.
Clinical manifestations:
The main manifestations of constipation are decreased defecation frequency and difficulty in defecation. Many patients defecate less than three times a week, and in severe cases, they defecate once every 2 to 4 weeks. Some patients can be characterized by difficulty in defecation, the defecation time can be as long as 30 minutes or more, or defecation is repeated every day, but it is difficult to discharge, and the feces are hard to harden like sheep dung, and the number is very small.
In addition, there are abdominal distension, loss of appetite, and abdominal pain before defecation caused by improper use of laxatives. Physical examination showed that there was a fecal loop in the left lower abdomen, and there was a fecal lump in the anus.
Excessive defecation in the elderly can lead to changes in coronary artery and cerebral blood flow. Due to the decrease of cerebral blood flow, fainting may occur during defecation. Angina pectoris and myocardial infarction may occur in patients with insufficient coronary blood supply. Hypertensive people can cause cerebrovascular accidents, rupture of aneurysm or ventricular aneurysm, detachment of thrombus attached to the heart, arrhythmia and even sudden death.