Sub-involution
• The delay in the normal postpartum changes in the uterus results in delayed involution where the uterus fails to go back to its normal size.
• The two most common causes are retained products of conception and pelvic infection.
• Presents as persistent vaginal discharge, mild or profuse bleeding.
• Treatment depends on the etiology.
• Retained products of conception may respond to Misoprostol (to aid uterine contraction) or surgical intervention (evacuation of the uterus).
• Pelvic infection (endometritis) responds to antibiotic therapy.