Rebecca S Hartley1, Jane Hitti. 1. Biology Department, Seattle University, Seattle, Washington 98122, USA. rhartley@seattleu.edu
Abstract
OBJECTIVE: To determine whether second-born twins (B) have higher morbidity and mortality than first-born twins (A), using a paired analysis. STUDY DESIGN: We conducted a retrospective analysis of birth certificates and fetal and infant death certificates for 5138 twin pairs selected from those born in Washington State from 1989 to 2001. Twin A was vertex and delivered vaginally. Pairs were not size-discordant (< 20%) and had no malformations. Matched-pair odds ratios were calculated. RESULTS: Twin B had more fetal distress (OR=6.0) and more low 5-min Apgar scores (OR=2.1) than Twin A, except at short delivery intervals. Pairs had relatively high rates of combined vaginal plus cesarean deliveries at delivery intervals 15 min. CONCLUSION: If prompt vaginal delivery of Twin B does not occur, the benefits of vaginal delivery for Twin A might not outweigh the risks of distress and low Apgar scores in Twin B and vaginal plus cesarean delivery for the mother.
OBJECTIVE: To determine whether second-born twins (B) have higher morbidity and mortality than first-born twins (A), using a paired analysis. STUDY DESIGN: We conducted a retrospective analysis of birth certificates and fetal and infant death certificates for 5138 twin pairs selected from those born in Washington State from 1989 to 2001. Twin A was vertex and delivered vaginally. Pairs were not size-discordant (< 20%) and had no malformations. Matched-pair odds ratios were calculated. RESULTS: Twin B had more fetal distress (OR=6.0) and more low 5-min Apgar scores (OR=2.1) than Twin A, except at short delivery intervals. Pairs had relatively high rates of combined vaginal plus cesarean deliveries at delivery intervals 15 min. CONCLUSION: If prompt vaginal delivery of Twin B does not occur, the benefits of vaginal delivery for Twin A might not outweigh the risks of distress and low Apgar scores in Twin B and vaginal plus cesarean delivery for the mother.
Authors: Seung Mi Lee; Joong Shin Park; Errol R Norwitz; Sun Min Kim; JoonHo Lee; Chan-Wook Park; Byoung Jae Kim; Jong Kwan Jun Journal: PLoS One Date: 2015-06-15 Impact factor: 3.240