Uterine inversion

Uterine inversion
Complete inverted uterus
SpecialtyObstetrics
SymptomsPostpartum bleeding, abdominal pain, mass in the vagina, low blood pressure
TypesFirst, second, third, fourth degree
Risk factorsPulling on the umbilical cord or pushing on the top of the uterus before the placenta has detached, uterine atony, placenta previa, connective tissue disorders
Diagnostic methodSeeing the inside of the uterus in the vagina
Differential diagnosisUterine fibroid, uterine atony, bleeding disorder, retained placenta
TreatmentStandard resuscitation, rapidly replacing the uterus
MedicationOxytocin, antibiotics
Prognosis~15% risk of death
FrequencyAbout 1 in 6,000 deliveries

Uterine inversion is when the uterus turns inside out, usually following childbirth. Symptoms include postpartum bleeding, abdominal pain, a mass in the vagina, and low blood pressure. Rarely inversion may occur not in association with pregnancy.

Risk factors include pulling on the umbilical cord or pushing on the top of the uterus before the placenta has detached. Other risk factors include uterine atony, placenta previa, and connective tissue disorders. Diagnosis is by seeing the inside of the uterus either in or coming out of the vagina.

Treatment involves standard resuscitation together with replacing the uterus as rapidly as possible. If efforts at manual replacement are not successful surgery is required. After the uterus is replaced oxytocin and antibiotics are typically recommended. The placenta can then be removed if it is still attached.

Uterine inversion occurs in about 1 in 2,000 to 1 in 10,000 deliveries. Rates are higher in the developing world. The risk of death of the mother is about 15% while historically it has been as high as 80%. The condition has been described since at least 300 BC by Hippocrates.