What is a biochemical pregnancy loss?
Aug 07, 2022
Source: Cainiu Health
Dr. Chen Zhe
Introduction
A biochemical pregnancy refers to a situation where the sperm and egg unite, but the resulting blastocyst either fails to return to the uterus for implantation or implants unsuccessfully within the uterus. Symptoms of a biochemical pregnancy miscarriage include vaginal bleeding occurring at the expected time of menstruation; a home pregnancy test yields a positive result, yet menstruation begins within a few days; and clinical evaluation (e.g., ultrasound) fails to detect a gestational sac, despite elevated serum β-hCG levels.
Some women, after successfully conceiving, undergo follow-up prenatal examinations only to discover a biochemical pregnancy loss—leaving them puzzled. So, what exactly is a biochemical pregnancy loss?
What is a biochemical pregnancy loss?
Biochemical pregnancy loss—commonly referred to as a subclinical miscarriage—is an early pregnancy loss occurring within five weeks after conception is confirmed. It occurs when sperm fertilizes the egg, but the resulting blastocyst fails to implant in the uterus—or implants unsuccessfully. Typical signs include vaginal bleeding around the expected menstrual period despite a positive home pregnancy test; menstruation then commences shortly thereafter. Alternatively, ultrasound may fail to detect a gestational sac, while serum hCG levels rise—both hallmark features of biochemical pregnancy loss.
Following a biochemical pregnancy loss, maintain a nutritionally balanced diet and avoid raw, cold, spicy, or otherwise irritating foods. Abstain from sexual intercourse for at least one month to reduce the risk of gynecological infections. Ideally, wait six months to one year before attempting conception again, allowing adequate time for uterine recovery and minimizing potential adverse effects on subsequent embryonic development. If biochemical pregnancy losses recur frequently, chromosomal and genetic testing should be performed to identify underlying causes, and appropriate treatment should be selected based on the results.
After a biochemical pregnancy loss, it is advisable to return to the hospital for a follow-up evaluation to confirm complete expulsion of pregnancy tissue. If retained products of conception are present, management must be guided by your physician’s recommendations. Prolonged incomplete expulsion can harm your health and negatively impact future fertility. We hope this information has been helpful!
