What is a biochemical pregnancy?
Sep 13, 2024
Source: Cainiu Health
Dr. Zhang Lu
Introduction
Biochemical pregnancy is mainly caused by chromosomal abnormalities, early embryonic developmental arrest, improper implantation of the fertilized egg, luteal phase deficiency, polycystic ovary syndrome, and other factors. After a biochemical pregnancy, it is recommended to consume more fresh fruits and vegetables to supplement vitamins, and moderate amounts of meat, eggs, dairy products, chicken soup, fish soup, etc., to increase protein and mineral intake and enhance immune function.
In general, biochemical pregnancies are mainly caused by chromosomal abnormalities, early embryonic developmental arrest, improper implantation of the fertilized egg, luteal phase defect, polycystic ovary syndrome (PCOS), and other factors. If you experience any discomfort, seek medical attention immediately. Detailed analysis is as follows:
1. Genetic Factors
During fertilization, chromosomes carried by sperm and eggs may develop numerical or structural abnormalities due to errors in cell division. Embryos with such chromosomal abnormalities often fail to develop normally, leading to a biochemical pregnancy. The risk of recurrent biochemical pregnancy can be reduced through genetic counseling, prenatal genetic testing, and embryo screening techniques used in assisted reproductive technology.
2. Early Embryonic Developmental Arrest
Shortly after the fertilized egg implants in the uterine lining, embryonic development may cease due to external trauma or maternal psychological stress, resulting in a biochemical pregnancy. Usually, no specific medical intervention is required, as the embryo has not developed to a stage requiring surgical or other treatments.
3. Improper Implantation of the Fertilized Egg
Bacterial or viral infections may lead to improper implantation of the fertilized egg. Although the fertilized egg implants in the endometrium, insufficient endometrial thickness or inadequate nutrient supply may prevent further development into a healthy embryo, causing a biochemical pregnancy. This may result in emergency symptoms such as severe abdominal pain and vaginal bleeding. Treatment under professional medical guidance may include medications such as progesterone injection, dydrogesterone tablets, or misoprostol tablets.
4. Luteal Phase Defect
Luteal phase defect is associated with insufficient progesterone secretion by the corpus luteum and poor endometrial receptivity. Low progesterone levels due to luteal insufficiency can impair endometrial preparation, thereby affecting embryo implantation and leading to a biochemical pregnancy. Symptoms may include irregular menstrual cycles and ovulation disorders. Treatment should follow medical advice and may include medications such as clomiphene citrate capsules, letrozole tablets, or conjugated estrogens cream.
5. Polycystic Ovary Syndrome (PCOS)
PCOS may be caused by genetic factors, hormonal imbalances, and other reasons. Patients with elevated androgen levels and insulin resistance may experience ovulation disorders and adverse changes in the endometrium, leading to the aforementioned symptoms, including weight gain and hirsutism. It is recommended to follow medical advice for treatment using medications such as metformin hydrochloride sustained-release tablets, estradiol valerate tablets, or acarbose tablets.
Avoid consuming raw, cold, spicy, or irritating foods, as they may interfere with the smooth expulsion of intrauterine blood stasis.
