Intestinal ischemia refers to the obstruction of blood vessels supplying blood to the intestine for some reason, resulting in a decrease or loss of blood sources to the intestine for its physiological activities, bruising, edema or ulceration of the intestinal wall, and in severe cases, necrosis, hemorrhage, perforation and peritonitis. Hypotonia is one of the clinical symptoms of constipation, which is caused by the involvement of organs related to atherosclerosis. So how is hypotonia of the intestine diagnosed? Here is a brief introduction. Diagnosis of constipation Diagnosis is generally confirmed based on medical history and symptoms. Supplemented by routine stool, gastrointestinal X-ray, intestinal endoscopy, fecal phosphate and other tests, it can be clear whether it is functional constipation or organic constipation. The diagnosis of atherosclerosis mainly depends on the vascular lesions and the degree of ischemia of the affected organs. Aortic atherosclerosis is often asymptomatic, while coronary atherosclerosis can cause angina pectoris, myocardial infarction, cardiac arrhythmia and even sudden death if the diameter of the stenosis reaches 75% or more. Cerebral atherosclerosis can cause cerebral ischemia, cerebral atrophy, or cerebrovascular rupture and bleeding. Renal atherosclerosis often causes nocturia, intractable hypertension, and renal insufficiency in severe cases. Mesenteric atherosclerosis can manifest as abdominal pain and blood in the stool after a full meal. Atherosclerosis of the lower limbs may cause intermittent claudication, loss of dorsalis pedis artery pulsation, and even gangrene in severe cases.