OBJECTIVE: To determine the outcome and morbidity of pregnancies follo
wing cervical cerclage. METHOD: Records were reviewed for 326 patients
with 374 singleton pregnancies between 1980 and 1990. RESULT: McDonal
d and Shirodkar procedures were carried out in 323 and 51 pregnancies,
respectively. The procedure was classified as elective if based on pa
st history (n = 330). In 44 pregnancies, cervical dilatation prompted
operation. The overall fetal survival rate has increased from 17.7% to
79.1% after cervical cerclage. While the presence of cervical dilatat
ion at suture placement had a prognostic value, the surgical technique
, gestational age at suture placement and progestin therapy had no sig
nificant effect on survival. Premature rupture of membranes and chorio
amnionitis were found to be the leading causes of morbidity. CONCLUSIO
N: Cervical cerclage seems to the treatment of choice in patients with
cervical incompetence. Only the presence of cervical dilatation at op
eration was found to have a prognostic value among the factors analyze
d.