In plain words
Subinvolution means the uterus does not shrink back as quickly as expected after birth. Normally the uterus shrinks over about six weeks, and the site where the placenta grew heals. In subinvolution, that shrinking slows, and blood or tissue can stay in the uterus. Mothers may notice bleeding that gets heavier again after easing, cramping, or a bad smell. Clinicians may find a soft or enlarged uterus on exam. It is often linked with retained tissue or infection. It is not the normal bleeding of the first weeks, called , though the two can overlap. Bleeding that gets heavier, or feeling unwell, is a reason to call a provider today.
The deeper version
Failure of uterine involution, the reduction in size and vascular bed of the uterus, with persistence of the . depends on myometrial contraction and tissue remodeling over roughly six weeks. is attributed to subinvolution of the placental site, retained products, and , often together (ACOG Practice Bulletin 183, , 2017). Diagnosis combines bimanual exam, uterine size, and ultrasound for retained tissue. Subinvolution is rarely isolated, and it is hard to separate clinically from endometritis.
Where it comes up
- Postpartum bleeding (lochia): what's normal, what's notPostpartum: Your Body
- Heavy bleeding after birth (hemorrhage)Birth and the First Days
- Signs of infection after birthPostpartum: Your Body
- When your period comes backPostpartum: Your Body
What mothers here say about subinvolution
No one has posted under this term yet.
Sources
- American College of Obstetricians and Gynecologists — Postpartum Hemorrhage, Practice Bulletin 183, 2017
- Royal College of Obstetricians and Gynaecologists — Postpartum Haemorrhage, Green-top Guideline No. 52, 2016