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Zhang Yin Xing
Obstetrics
About me
Deputy Chief Physician, engaged in obstetrics and gynecology clinical, teaching and other work for more than 12 years, with abundant experience in obstetrics and gynecology clinical work and teaching. A member of the Obstetrics and Gynecology Medical Association of Huangshi City, has published multiple articles and monographs in domestic journals and holds patents.
Proficient in diseases
Mastering the diagnosis and treatment of common obstetrics and gynecology diseases, prevalent diseases, and difficult and critical diseases; specializing in the management of high-risk pregnancies, such as the diagnosis and treatment of hypertension in pregnancy, prenatal diagnosis, recurrent miscarriage, pregnancy complications/comorbidities, and rich experience in managing critical, urgent, and severe cases.
Voices
What should I do if the umbilical cord is wrapped around the neck once?
Umbilical cord wrapping around the neck once is a very common phenomenon, occurring in 20% of fetuses. When the umbilical cord wraps around the neck once, if the umbilical blood flow and fetal movements are normal, it indicates that the cord wrapping does not affect the fetus and will not have a direct impact on the fetus's intrauterine growth and development. However, during childbirth, attention must be paid to the possibility that the umbilical cord wrapping may cause difficulties in the descent of the presenting part of the fetus, leading to abnormal umbilical blood flow. If difficulties in the descent of the presenting part and changes in the fetal heart rate occur during delivery, the possibility of umbilical cord wrapping should be considered. If necessary, a cesarean section should be performed to terminate the pregnancy. There are no medications or other treatments that can alleviate umbilical cord wrapping; instead, enhanced prenatal monitoring is sufficient.
What should pregnant women do about oral ulcers?
Generally speaking, for recurrent oral ulcers, due to hormonal changes during pregnancy, most female patients experience fewer occurrences of oral ulcers. If oral ulcers occur during pregnancy, treatment can be based on the cause: First, if the oral ulcers are caused by bites or burns, Kangfuxin solution or watermelon frost spray can be used for local treatment to accelerate the healing of the ulcer. Second, if the oral ulcers are due to vitamin deficiency, the patient should pay attention to oral hygiene and can appropriately take oral vitamin tablets to enhance resistance and promote the healing of the ulcer. During the outbreak of ulcers, it is important to avoid eating spicy and irritating foods, and antibiotics are not needed for oral ulcers. (Medication should be used under the guidance of a physician.)
What impact does thalassemia have on the fetus?
Thalassemia is a common autosomal genetic disease with a high incidence in the southern regions of our country, divided into alpha type and beta type, and based on severity, it is further classified into silent, mild, moderate, and severe types. For fetuses with silent and mild thalassemia, there are usually no obvious symptoms, and no treatment is required; for moderate and severe thalassemia fetuses, we aim to prevent their birth, so it is necessary to conduct relevant tests on both spouses before and during early pregnancy to determine whether they carry the pathogenic genes for thalassemia. For fetuses with moderate or severe thalassemia, intrauterine growth retardation, abnormal skeletal development, and enlargement of the liver and spleen can occur; fetuses with severe thalassemia mostly die in utero or after birth. Fetuses with moderate thalassemia require long-term treatments after birth, such as blood transfusions, iron removal, and splenectomy, and even with such treatments, it is difficult for them to develop into adulthood.
How should pregnant women screen for albinism?
Prenatal screening for albinism primarily involves chromosomal testing during pregnancy. Albinism is a single-gene hereditary disease caused by a defect in a single gene. It mainly occurs in children of consanguineous marriages where both parents carry the albinism gene. This is not a routine prenatal screening; it is only conducted if there has been a case of albinism in the family. Fetal chromosomal examination generally takes place between the 16th to 24th weeks of pregnancy during amniocentesis, where fetal cells are collected to conduct genetic testing to determine if the fetus carries the albinism gene.
What effect does thalassemia in pregnant women have on the fetus?
Thalassemia is a common hereditary hemolytic disease caused by genetic defects regulating globin synthesis, leading to reduced or absent globin production. This results in shortened red blood cell lifespan and subsequently chronic hemolytic microcytic hypochromic anemia. Thalassemia is classified into α-thalassemia and β-thalassemia. α-thalassemia is more common and includes silent carrier state, trait, HBH disease, and Hb Bart's hydrops fetalis. The silent carrier state shows no clinical symptoms with a 2% chance of hydrops fetalis in newborns. The trait generally causes mild anemia with a 3%-5% chance of hydrops fetalis in newborns. HBH disease often presents with moderate to severe permissive anemia, typically accompanied by hepatosplenomegaly, depressed nasal bridge, and widened eye distance, giving a distinct anemic appearance. β-thalassemia is categorized into mild, severe, and intermediate β-thalassemia. Mild β-thalassemia does not show visible physical changes, mainly presenting as mild anemia. Severe β-thalassemia can exhibit extramedullary hematopoiesis causing distinctive facial features, delayed sexual development, and poor growth. The severity of intermediate β-thalassemia varies; some patients require regular blood transfusions to sustain life, allowing survival into adulthood.