involution
Pronunciation: in-vuh-LOO-shun
The process by which the uterus returns to its pre-pregnancy size and condition after childbirth.
Full Definition
Uterine involution is the natural postpartum process where the uterus contracts and reduces in size from its enlarged pregnant state back to approximately pre-pregnancy dimensions. This process typically takes 6-8 weeks and involves muscle fiber contraction, tissue breakdown, and elimination of excess cells. The fundal height progressively decreases, and the cervix gradually closes. Involution can be monitored through physical examination and is an important indicator of normal postpartum recovery. Delayed or incomplete involution may indicate complications requiring medical intervention.
Usage
Usage note: When used alone in obstetric contexts, typically refers to uterine involution. Distinguish from subinvolution, which indicates delayed or incomplete recovery.
In Context
- "Normal uterine involution was noted at the six-week postpartum examination." — Postpartum follow-up visit
- "Breastfeeding promotes faster involution through oxytocin release during nursing." — Patient education brochure