Riding out Hurricane Katrina.
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Adaptation, Psychological↗
Biomedical subjects
Joyce Martin
Publications and source records attributed to Joyce Martin.
Delayed interval delivery and infant survival: a population-based study.
OBJECTIVE: Delaying delivery of the remaining fetus(es) in a multifetal pregnancy is feasible in some cases. However, the impact of this procedure on infant survival is unclear. STUDY DESIGN: We used the US 1995-1998 Matched Multiple Birth File. We identified 200 twin pregnancies in which the first twin was delivered between 17 and 29 weeks of gestation and the second twin was delivered 2 or more days later. We individually matched the delayed deliveries with 374 twin pregnancies in which the second twin was delivered on the same or next calendar day. Perinatal outcomes and infant survival were compared between the delayed and nondelayed twins. RESULTS: Among the 200 pregnancies with delayed delivery, the mean gestational age at first delivery was 23 weeks and the median duration of delay was 6 days (ranging from 2-107 days). One week of delay in delivery was associated with an increase in infant birth weight of 131 g on average (95% CI: 115-147 g). Moreover, 56% of the delayed second twins survived to 1 year of age, whereas only 24% of the nondelayed second twins survived to 1 year of age (P <.001). However, 11% of the second twin in delayed delivery (95% CI: 6%-16%) experienced fetal death before 24 weeks. CONCLUSION: Delayed delivery of the remaining fetus(es) before 30 weeks of gestation for 2 or more days was associated with improved infant survival.
Birth Weight↗
Fetal and neonatal mortality among twin gestations in the United States: the role of intrapair birth weight discordance.
OBJECTIVE: To examine the association of intrapair birth weight discordance with fetal and neonatal mortality. METHODS: We used the United States (1995-1997) Matched Multiple Birth File (n = 297,155). RESULTS: Among twin live births and stillborn fetuses, 29.9% had less than 5% birth weight discordance, 24.2% had 5-9%, 29.6% had 10-19%, 11.1% had 20-29%, 3.4% had 30-39%, and 1.8% had 40% or more. The stillborn fetus rate increased progressively with increasing birth weight discordance for smaller and larger twins of the same sex. Compared with the less than 5% birth weight discordance category, the adjusted odds ratios (OR) (95% confidence intervals [CIs]) for stillborn fetus associated with 5-9%, 10-19%, 20-29%, 30-39%, and 40% or more birth weight discordance, respectively, were 0.81 (95% CI 0.58, 1.11), 1.41 (95% CI 1.07, 1.84), 1.74 (95% CI 1.28, 2.35), 3.06 (95% CI 2.21, 4.24), and 4.29 (95% CI 3.05, 6.04) for smaller twins. The corresponding ORs (95% CIs) for larger twins were 0.78 (95% CI 0.57, 1.08), 1.26 (95% CI 0.96, 1.66), 1.77 (95% CI 1.27, 2.46), 3.38 (95% CI 2.33, 4.92), and 2.91 (95% CI 1.89, 4.47). Similar associations were observed among smaller but not larger twins of opposite sex. Among larger but not smaller twins of the same sex, increasing birth weight discordance was associated with overall neonatal deaths. This association was not apparent among smaller and larger twins of opposite sex. However, increasing birth weight discordance was associated with neonatal deaths related to congenital malformations among smaller and larger twins. CONCLUSION: The results provide evidence that increased twin birth weight discordance was associated with increased risk of intrauterine death and malformation-related neonatal deaths.
Adolescent↗