Uterine fibroids and risk for complications following second-trimester amniocentesis.

OBJECTIVE To compare the abortion rate and preterm premature rupture of membranes (PPROM) after amniocentesis in women who have undergone antibiotic prophylaxis with uterine fibroids and control. STUDY DESIGN Retrospective study using the Antibiotic Prophylaxis before Second-Trimester Genetic Amniocentesis trial database carried out between January 1999 and December 2005 at the Artemisia Fetal-Maternal Medical Center (Rome, Italy). All women underwent antibiotic prophylaxis before amniocentesis. A follow-up within 4 weeks from the procedure was available. RESULTS A total of 2,497 of 21,219 (11.8%) women with uterine fibroids were identified. The rate of abortion was 2 of 2,497 (0.08%) in women with fibroids and 4 of 18,722 (0.03%) in women without fibroids (p = 0.42). The rate of PPROM was 4 of 2,497 (0.16%) in women with fibroids and 10 of 18,722 (0.05%) in women without fibroids (p = 0.12). CONCLUSION The risk for abortion and PPROM does not increase in the presence of uterine fibroids in women who have undergone antibiotic prophylaxis.