What is the mobidity rate associated with cervical cerclage?

The overall rate of serious maternal morbidity resulting from cerclage placement was low but occurred in 45 of 749 patients (6.0%). Cerclage-related uterine rupture, hysterectomy, or both occurred in six women (0.8%). Cerclage-related serious infectious morbidity requiring treatment for endometritis, sepsis, pelvic abscess, urinary tract infection, or wound infection requiring intravenous antibiotics or hospitalization occurred in 39 additional women (5.2%). In the multivariate analysis only prior uterine scar, maternal age older than 35 years, singleton gestation, emergency cerclage placement, prior surgical abortion, and uterine anomaly remained positively associated with the composite outcome of all serious maternal morbidity