The effects of birth weight discordance and prematurity on twin neonatal outcome.

Objective: The purpose of this study was to determine the effect of birth weight discordance (BWD) and prematurity on twin neonatal outcome by measuring Apgar scores and blood glucose concentrations at birth.

Methods: This was a retrospective cross-sectional study. All twins born at NY Methodist Hospital between January 1998 and December 2001 were eligible.

Mode of conception, placental morphology and perinatal outcome of twin gestations.

Objective: To compare the perinatal outcome and placental morphology of twins conceived by assisted reproductive technologies (ART) or natural conception (NC).

Methods: The present retrospective study included 88 twin pairs. Methods of ART included in vitro fertilization, intrauterine insemination, embryo transfer and induced ovulation.