Patient's question:
Detailed medical condition and consultation purpose: Hello: I would like to inquire about the issue of whether pregnant women need a hospital to issue relevant certificates when flying. I am currently 29 weeks pregnant. Last week, I had an ultrasound, and the doctor said that the placenta is relatively low. Is this phenomenon a sign of preterm labor? Thank you.Duration and course of the current illness: The doctor informed me during the ultrasound at 28 weeks.
Current general condition: If I stand for a long time, I feel pain in the joint of my thigh root.
Medical history: None.
Previous diagnoses, treatments, and outcomes: Normal.
Doctor's answer:
Normal placenta is attached to the bottom, front, back, and side walls of the uterus, far from the internal os of the uterus. If the placenta is partially or completely attached to the lower segment of the uterus or covers the internal os, and its position is lower than the presenting part of the fetus, it is called placenta previa.The causes of placenta previa can be divided into three aspects:
First, it is related to poor blood supply in the endometrium, such as frequent pregnancies, multiple induced abortions, and postpartum infections.
Second, it is associated with delayed development of the fertilized egg.
Third, it may also be related to an excessively large placental area.
Advice: The main symptom of placenta previa is recurrent, painless vaginal bleeding during the later stages of pregnancy. For cases of placenta previa with frequent bleeding, it may be necessary to consider delivering the baby prematurely, as this can also lead to preterm labor.