C M Salafia1, N Kiryankova2, H Inany3, P Charlagorla3, M Park2, N Khawar3, S VanHorn4, B Dygulska3, P Narula3, S Lederman2. 1. Obstetrics and Gynecology, NewYork Methodist Hospital, Brooklyn, NY, USA. Electronic address: carolyn.salafia@gmail.com. 2. Obstetrics and Gynecology, NewYork Methodist Hospital, Brooklyn, NY, USA. 3. Pediatrics, NewYork Methodist Hospital, Brooklyn, NY, USA. 4. Obstetrics and Gynecology, NewYork Methodist Hospital, Brooklyn, NY, USA; Pediatrics, NewYork Methodist Hospital, Brooklyn, NY, USA.
Abstract
OBJECTIVE: Do monochorionic (MC) and/or dichorionic (DC) twins show allometric scaling between placental and birth weight (PW, BW)? METHODS: We extracted BW, PW, gestational age (GA) and cord insertion type from 52 MC to 310 DC twins to calculate β. DC twins were analyzed as summed and as individuals if placentas were separate. RESULTS: Mean β for MC (0.78 ± 0.02), DC summed (0.78 ± 0.02), and DC with separate placentas (0.77 ± 0.03 and 0.76 ± 0.04) all non-significant. GA, summed BWs, total PW, BW discordance, and cord insertion sites did not differ between twin types or with β. CONCLUSION: MC and DC twins show allometric scaling similar to singletons.
OBJECTIVE: Do monochorionic (MC) and/or dichorionic (DC) twins show allometric scaling between placental and birth weight (PW, BW)? METHODS: We extracted BW, PW, gestational age (GA) and cord insertion type from 52 MC to 310 DC twins to calculate β. DC twins were analyzed as summed and as individuals if placentas were separate. RESULTS: Mean β for MC (0.78 ± 0.02), DC summed (0.78 ± 0.02), and DC with separate placentas (0.77 ± 0.03 and 0.76 ± 0.04) all non-significant. GA, summed BWs, total PW, BW discordance, and cord insertion sites did not differ between twin types or with β. CONCLUSION:MC and DC twins show allometric scaling similar to singletons.
Authors: Alexa A Freedman; Carol J Hogue; Carmen J Marsit; Augustine Rajakumar; Alicia K Smith; Katherine L Grantz; Robert L Goldenberg; Donald J Dudley; George R Saade; Robert M Silver; Karen J Gibbins; Radek Bukowski; Carolyn Drews-Botsch Journal: Am J Epidemiol Date: 2019-03-01 Impact factor: 4.897
Authors: Daniel Baller; Diana M Thomas; Kevin Cummiskey; Carl Bredlau; Nadav Schwartz; Kelly Orzechowski; Richard C Miller; Anthony Odibo; Ruchit Shah; Carolyn M Salafia Journal: J R Soc Interface Date: 2019-10-30 Impact factor: 4.118
Authors: Carolyn M Salafia; Ruchit G Shah; Dawn P Misra; Jennifer K Straughen; Drucilla J Roberts; Larry Troxler; Simon P Morgan; Barbara Eucker; John M Thorp Journal: Placenta Date: 2017-08-30 Impact factor: 3.481