TY - JOUR
T1 - Can discordance in CRL at the first trimester predict birth weight discordance in twin pregnancies ?
AU - Weissmann-Brenner, Alina
AU - Weisz, Boaz
AU - Achiron, Reuven
AU - Shrim, Alon
PY - 2012/9
Y1 - 2012/9
N2 - Objective: To examine the correlation between measurements of crown rump length (CRL), nuchal translucency (NT), and birth weight in dichorionic (DC) and monochorionic (MC) twin pregnancies. Methods: A retrospective analysis was performed on all twin term pregnancies delivered between 2001 and 2007 at the McGill University Health Center. Data collected included maternal age, CRL and NT measurement, results of glucose challenge test, birth weight and length, gestational age at delivery, and fetal gender. Results: The study population comprised 792 fetuses: 94 MC/ DA and 698 DC/DA. Maternal age, gestational age at delivery, birth weight, and birth length were all significantly higher for the DC group. Male fetuses had significantly higher NT and higher birth weight than female fetuses. Discordance in CRL was found to correlate with discordance in birth weight in the entire study population (P < 0.0001, R = 0.25), in the DC twins (P < 0.0001, R = 0.275), but not in MC twins (R = 0.10, P = 0.33). CRL discordance above the 90 th percentile ( > 12 % ) predicted 14/40 pregnancies with birth weight discordance above the 90 th percentile ( > 24 % ) [P < 0.001, LR = 4.1 (2.6 - 6.2)]. CRL discordance above the 95 th percentile ( > 16 % ) predicted
AB - Objective: To examine the correlation between measurements of crown rump length (CRL), nuchal translucency (NT), and birth weight in dichorionic (DC) and monochorionic (MC) twin pregnancies. Methods: A retrospective analysis was performed on all twin term pregnancies delivered between 2001 and 2007 at the McGill University Health Center. Data collected included maternal age, CRL and NT measurement, results of glucose challenge test, birth weight and length, gestational age at delivery, and fetal gender. Results: The study population comprised 792 fetuses: 94 MC/ DA and 698 DC/DA. Maternal age, gestational age at delivery, birth weight, and birth length were all significantly higher for the DC group. Male fetuses had significantly higher NT and higher birth weight than female fetuses. Discordance in CRL was found to correlate with discordance in birth weight in the entire study population (P < 0.0001, R = 0.25), in the DC twins (P < 0.0001, R = 0.275), but not in MC twins (R = 0.10, P = 0.33). CRL discordance above the 90 th percentile ( > 12 % ) predicted 14/40 pregnancies with birth weight discordance above the 90 th percentile ( > 24 % ) [P < 0.001, LR = 4.1 (2.6 - 6.2)]. CRL discordance above the 95 th percentile ( > 16 % ) predicted
KW - Birth weight
KW - Crown rump length
KW - Discordancy
KW - Nuchal translucency
KW - Twin pregnancy
UR - http://www.scopus.com/inward/record.url?scp=84869482164&partnerID=8YFLogxK
U2 - 10.1515/jpm-2011-0250
DO - 10.1515/jpm-2011-0250
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
C2 - 22945274
AN - SCOPUS:84869482164
SN - 0300-5577
VL - 40
SP - 489
EP - 493
JO - Journal of Perinatal Medicine
JF - Journal of Perinatal Medicine
IS - 5
ER -