OBJECTIVE: This study was undertaken to report on the outcome of multifetal pregnancy reduction in the most up-to-date largest single center experience with this procedure, and compare the outcome to the first 1000 cases performed at the same institution. STUDY DESIGN: 1000 consecutive cases of multifetal pregnancy reduction performed at the Mount Sinai Medical Center between the years 1999-2006 were identified. Pregnancy outcomes were retrieved from a large database as well as chart review. Differences in means and proportions were evaluated by analysis of variance, chi-square, Cochran-Armitage test for trend or 2-tailed Fisher exact test as appropriate. RESULTS: Outcomes were available on 841 cases, for a follow-up rate of 84.1%; 95.2% of patients delivered after 24 weeks, for a complete loss rate of 4.7%. There was a significant trend toward decreasing loss rates with decreasing starting numbers. Mean gestational age at delivery was later, and birthweights greater, for reduction to singletons vs twins. CONCLUSION: Loss rates after multifetal pregnancy reduction have remained stable at 4.7%. The lowest loss rate occurred in the patients reducing from twins to a singleton (2.1%). Reduction to a singleton was also associated with higher birthweights and lower rates of preterm deliveries.
OBJECTIVE: This study was undertaken to report on the outcome of multifetal pregnancy reduction in the most up-to-date largest single center experience with this procedure, and compare the outcome to the first 1000 cases performed at the same institution. STUDY DESIGN: 1000 consecutive cases of multifetal pregnancy reduction performed at the Mount Sinai Medical Center between the years 1999-2006 were identified. Pregnancy outcomes were retrieved from a large database as well as chart review. Differences in means and proportions were evaluated by analysis of variance, chi-square, Cochran-Armitage test for trend or 2-tailed Fisher exact test as appropriate. RESULTS: Outcomes were available on 841 cases, for a follow-up rate of 84.1%; 95.2% of patients delivered after 24 weeks, for a complete loss rate of 4.7%. There was a significant trend toward decreasing loss rates with decreasing starting numbers. Mean gestational age at delivery was later, and birthweights greater, for reduction to singletons vs twins. CONCLUSION: Loss rates after multifetal pregnancy reduction have remained stable at 4.7%. The lowest loss rate occurred in the patients reducing from twins to a singleton (2.1%). Reduction to a singleton was also associated with higher birthweights and lower rates of preterm deliveries.
Authors: Roberto Romero; Kypros Nicolaides; Agustin Conde-Agudelo; Ann Tabor; John M O'Brien; Elcin Cetingoz; Eduardo Da Fonseca; George W Creasy; Katharina Klein; Line Rode; Priya Soma-Pillay; Shalini Fusey; Cetin Cam; Zarko Alfirevic; Sonia S Hassan Journal: Am J Obstet Gynecol Date: 2011-12-11 Impact factor: 8.661