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Xie Zhi Hong
Cardiology
About me
The Secretary-General and Standing Committee Member of the Cardiovascular Disease Professional Committee of the Rehabilitation Medical Association in Ganzhou City, and a member of the Ganzhou City Working Committee of the Heart Emergency Branch of the China Medical Health International Exchange Promotion Association. He has chaired 4 provincial and municipal-level research projects, participated in more than 20 research projects, and published over 20 papers.
Proficient in diseases
Specializes in the diagnosis and treatment of coronary heart disease, hypertension, and structural heart disease. Research interests include hypertension, coronary heart disease, arrhythmia, and cardiac rehabilitation.
Voices
Is patent ductus arteriosus related to staying up late during pregnancy?
The arterial duct refers to a continuous duct between the main trunk of the pulmonary artery and the aorta during the embryonic period of the fetus. Through this duct, blood from the placenta can be delivered to the infant's body for tissue oxygenation. Therefore, the arterial duct is originally a normal tissue in the embryo. After the birth of the infant, the majority of arterial ducts will close within a few months. If it has not closed after one year, it can be diagnosed as congenital patent ductus arteriosus. Therefore, there is no relationship between patent ductus arteriosus and staying up late during pregnancy.
Can mitral valve insufficiency cause angina?
Angina is caused by severe ischemia of the coronary arteries, leading to abnormal myocardial metabolism, which results in cardiac angina. Some people may also experience chest tightness, a burning sensation in the precordial area, or various other discomforts. Mitral valve regurgitation can reduce the effectiveness of ventricular ejection. Most cases of mild to moderate mitral valve regurgitation do not cause angina. However, severe mitral valve regurgitation, which causes most of the heart’s blood to flow back into the left atrium during contraction, can lead to reduced aortic blood supply. Once the reduction in aortic blood supply reaches a certain level, it may cause symptoms of angina. This is relatively rare, as most cases of mitral valve regurgitation typically present symptoms of cardiac failure such as breathlessness, difficulty breathing, and orthopnea.
Is patent ductus arteriosus related to pregnancy?
The ductus arteriosus is a vital conduit in the fetus during intrauterine life, connecting the blood from the placenta to the pulmonary artery and the aorta, enabling the placental blood to reach the aorta and supply blood to the entire body of the fetus. Usually, if the fetus is viable, there should be no issues, so the non-closure of the ductus arteriosus is not related to the pregnancy period. After the birth of the fetus, as the lungs expand and heart function changes, the ductus arteriosus will automatically begin to close. In the vast majority of infants, the ductus arteriosus will likely close after three months of birth. If it has not completely closed within one year, it is considered that the child has patent ductus arteriosus. Therefore, in most cases, patent ductus arteriosus is not related to the pregnancy period. There might be a small fraction of cases where it could be due to poor development during the pregnancy, preventing the timely closure of the ductus arteriosus; however, in most cases, it is unrelated to the pregnancy period.
Can mitral valve insufficiency be treated without valve replacement?
Mitral valve regurgitation is classified into mild, moderate, and severe categories. Generally speaking, patients with mild and some moderate regurgitation may not exhibit symptoms. However, a small proportion of patients with moderate or severe regurgitation might experience symptoms such as tightness after activity and difficulty breathing. If these conditions recur, there may be an indication for surgical intervention. Therefore, for patients with moderate to severe symptoms, or those with significant enlargement of the heart, it is recommended to consider surgery at an early stage. If patients with mild or some moderate mitral valve regurgitation are asymptomatic and do not show significant enlargement of the heart structure, medical treatment or observation without valve replacement can be considered.
Does mitral valve insufficiency affect heart rate?
In order to maintain the vital signs of the human body, the heart must have a fixed cardiac output to ensure the blood supply and nourishment of the body, therefore the cardiac output is definite as per the body's needs. When there is severe mitral valve regurgitation, it causes a decrease in the stroke volume. As a compensation, while the stroke volume decreases, in order to ensure the body's blood supply and nourishment, the heart accelerates its beating to maintain the supply of output. Therefore, patients with mitral valve regurgitation often experience symptoms of tightness in the chest, difficulty breathing, and palpitations after exercising. This means that our heart rate after exercise will be faster than in people without mitral valve regurgitation, thus mitral valve regurgitation affects the heart rate.
Can you have children if you have a patent ductus arteriosus?
The ductus arteriosus refers to a channel in the fetus that, before birth, allows blood from the maternal placenta to enter the fetus's aorta through the ductus arteriosus and then circulates the blood throughout the body. This channel closes after birth, and in the vast majority of people, it closes within a year. If it remains open until reproductive age, surgery is required because an open ductus arteriosus can lead to deteriorating heart function and, in severe cases, can cause heart failure. Therefore, women with an open ductus arteriosus can have children after treatment. An open ductus arteriosus is not a hereditary disease, and regardless of whether it is present in males or females, it is not genetic and they can have children.
Is the disease with symptoms of chest tightness, shortness of breath, difficulty breathing, and palpitations tuberculosis?
Tuberculosis can cause symptoms such as fever, night sweats, cough, and hemoptysis, and in severe cases, it can lead to chest tightness, shortness of breath, and palpitations. However, if a patient experiences shortness of breath, difficulty breathing, and palpitations without symptoms like fever, hemoptysis, or night sweats, it is advisable to consider heart disease or chronic lung disease, or pneumonia leading to cardiopulmonary insufficiency. To rule out these conditions, examinations such as a chest CT and cardiac echocardiography should be conducted. Patients experiencing chest tightness and difficulty breathing are advised to seek medical attention at a hospital as soon as possible.
The reason for the formation of mitral stenosis pear-shaped heart
The heart undergoes a contraction cycle that begins once the ejection from the previous cycle is complete, necessitating the relaxation of the heart. As the heart relaxes, the mitral valve opens to allow blood to flow from the atrium to the ventricle, preparing for the next heartbeat. In patients with severe mitral stenosis, a significant reduction in the return volume of blood to the heart occurs. This reduction diminishes the pumping action of the ventricle, leading to disuse atrophy of the left ventricle. Normally, the left ventricle is relatively large and capable of maintaining a normal heart shape. When the left ventricle atrophies, it results in the heart having a flatter, more rounded apex, leading to a pear-shaped heart. If the ventricles are unable to efficiently reclaim blood, the load on the left atrium increases. Consequently, the left atrium enlarges, appearing larger at the top and smaller at the bottom in an X-ray, resembling a pear. This is how a pear-shaped heart is formed.