The aorta is the largest artery in the human body, responsible for transporting oxygen and nutrients to various organs throughout the body. Aortic dissection is a life-threatening emergency that occurs when the inner and middle layers of the aorta separate, forming a false channel that affects normal blood flow and may lead to serious complications such as aortic rupture, organ ischemia, or heart failure.
The etiology of aortic dissection is not completely clear, but it is generally believed to be related to hypertension, atherosclerosis, hereditary connective tissue disease, aortic aneurysm, trauma or surgery. The incidence rate of aortic dissection is about 3-4 cases per 100000 people, mostly in men over 50 years old, but also in young people or pregnant women.
The early signs of aortic dissection include the following, and the specific symptoms depend on the type, scope, and organs involved in the aortic dissection.
Sudden and severe chest or back pain, often described by patients as "tearing" or "sharp pain," can radiate to the shoulders, abdomen, or lower limbs.
Abnormal blood pressure, such as hypertension, hypotension, or bilateral upper limb blood pressure asymmetry.
Abnormal cardiovascular system, such as arrhythmia, cardiac tamponade, heart failure, myocardial infarction, etc.
Abnormalities in the nervous system, such as fainting, paraplegia, transient blindness, coma, etc.
Abnormal digestive system, such as abdominal pain, vomiting blood, black stool, etc.
Abnormal kidney function, such as hematuria, renal failure, etc.
The diagnosis of aortic dissection mainly relies on imaging examinations, such as chest X-rays, echocardiography, CT angiography, MRI, etc. These examinations can display information such as the morphology of the aorta, the location of intimal rupture, the presence of true and false lumens, the function of the aortic valve, and the occurrence of complications, which can help evaluate the patient's condition and prognosis.
The treatment methods for aortic dissection mainly include drug therapy, surgical intervention, and interventional therapy. The specific treatment plan should be formulated by professional doctors according to the specific situation of the patient.
The purpose of drug therapy is to lower blood pressure and heart rate, reduce aortic wall tension and tear progression. Commonly used drugs include beta blockers, calcium channel blockers, angiotensin-converting enzyme inhibitors, etc.
Surgical procedures involve the removal of aortic segments with dissection and replacement with artificial blood vessels. They are suitable for patients with involvement of the ascending aorta or serious complications, but involve significant trauma, high risk, and slow recovery.
Interventional therapy involves puncturing the femoral artery, placing a covered stent at the site of the intimal rupture, sealing the false lumen, and restoring blood flow to the true lumen. It is suitable for patients who do not involve the ascending aorta or have no surgical indications, and has the advantages of minimal trauma, good efficacy, and fast recovery.
Aortic dissection requires active prevention and sufficient vigilance to prevent, reduce, and delay the occurrence of the disease. The main measures include the following.
Control blood pressure, especially for patients with hypertension. Blood pressure should be properly controlled and measured daily. If severe chest pain occurs, seek medical attention immediately.
Low salt, low-fat diet, eat more fruits, vegetables and other high vitamin, easily digestible, nutrient rich soft foods, eat small meals frequently, avoid overeating, fast caffeine and other stimulating foods, quit smoking and drinking.
Moderate exercise and various aerobic exercises are helpful in controlling blood pressure, while weight training should avoid exhaustion and shortness of breath to reduce the risk of damaging blood vessels and reap the benefits of retraining.
Pay attention to weather changes, avoid catching a cold, prevent colds and coughs, maintain regular bowel movements, and keep warm, as a decrease in temperature can easily cause vasoconstriction and increase blood pressure, which is also the reason for the increase in patients with aortic dissection in winter.
Regular check ups are recommended. If there are related diseases that can easily trigger aortic dissection (such as Marfan syndrome, congenital ovarian dysplasia syndrome, or aortic aneurysm), it is recommended to closely contact the attending physician for regular check ups.
Pay attention to the symptoms. The early signs of aortic dissection are sudden and severe chest or back pain. If these symptoms occur, seek medical attention immediately and undergo imaging examinations to confirm the presence of aortic dissection.
Overall, aortic dissection is a serious cardiovascular disease that requires timely diagnosis and treatment, otherwise it may be life-threatening. Patients need regular follow-up and re examination after treatment to control blood pressure and risk factors, and prevent the recurrence or expansion of dissection.