Is a 1.43 cm uterine cavity separation after childbirth severe?

Nov 14, 2025 Source: Cainiu Health
Dr. Zhang Lu
Introduction
If a 1.43 cm uterine cavity separation is detected within 1–2 weeks postpartum, and there is no persistent vaginal bleeding, fever, abdominal pain, or other discomfort, it is usually due to incomplete uterine involution with a small amount of fluid or blood accumulation in the uterine cavity—a common phenomenon after childbirth. With adequate rest and moderate activity to promote lochia discharge, the separation typically gradually decreases or even resolves as the uterus returns to its normal state; therefore, excessive concern is generally unnecessary.

Under normal circumstances, a 1.43 cm uterine cavity separation after childbirth is usually not serious if the postpartum period is short and there are no abnormal symptoms. However, if it is accompanied by bleeding, abdominal pain, or persists for a prolonged postpartum period, it may indicate poor recovery and should be taken seriously. If concerned, it is recommended to seek medical advice promptly. Detailed analysis is as follows:

If a 1.43 cm uterine cavity separation is found within 1–2 weeks postpartum, and there is no persistent vaginal bleeding, fever, abdominal pain, or other discomfort, it is often due to incomplete uterine involution with a small amount of fluid or blood accumulation in the uterine cavity—this is a common postpartum phenomenon. With adequate rest and moderate activity to promote lochia discharge, the separation typically gradually decreases or resolves on its own as the uterus recovers, and therefore generally does not require excessive concern.

If the uterine cavity separation remains at 1.43 cm more than four weeks after delivery, or is accompanied by persistent bloody lochia, foul-smelling discharge, lower abdominal heaviness or pain, fever, or other symptoms, it may suggest retained tissue in the uterine cavity (such as placental or fetal membrane remnants) or a uterine infection, which is relatively more serious. Without timely treatment, this may impair uterine recovery and could even lead to chronic inflammation or secondary infertility. Further evaluation is needed to determine the underlying cause.

When a 1.43 cm uterine cavity separation is detected postpartum, regular follow-up ultrasounds should be performed as advised by a physician to monitor changes in the separation. Should any abnormal symptoms arise, prompt medical attention is essential to receive appropriate treatment.