Predictors of AVP and TSH levels and the timing of first voiding in the newborn.
To evaluate obstetric predictors of umbilical cord plasma AVP levels, serum TSH levels and the timing of first voiding, 87 singleton term newborns were divided into three groups: group A, vaginal delivery (n = 30); group B, cesarean section (CS) during labor (n = 26); and group C, elective CS (n = 31). The AVP concentration was 120 (0.7-2170) ng/L in group A, 1.8 (0.01-183) ng/L in group B, and 0.8 (0.01-30) ng/L in group C (p < 0.001). In group A, the TSH concentration was 10.20 (3.5-30.80) mU/L; in group B, 5.40 (2.10-43.00) mU/L; and in group C, 5.30 (2.90-11.00) mU/L (p = 0.001). Duration of labor had a positive correlation with AVP (p < 0.001) and TSH (p = 0.001) concentrations. The timing of first voiding had a positive correlation with gestational age (p = 0.003), volume of additional feeding before first voiding (p < 0.001), and umbilical AVP concentration (p = 0.023). The AVP and TSH concentrations are associated with mode of delivery and duration of labor and AVP levels also with the timing of first voiding in the newborn.
Vuohelainen
Tuomo
T
Paediatric Research Centre, University of Tampere and Tampere University Hospital, FIN 33014 Tampere, Finland.
Ojala
Riitta
R
Virtanen
Anita
A
Laatta
Jari
J
Mörsky
Pertti
P
Uotila
Jukka
J
Tammela
Outi
O
D001127:Arginine Vasopressin / Q000097:blood*; D036861:Delivery, Obstetric; D005260:Female; D005312:Fetal Blood / Q000737:chemistry*; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D007743:Labor, Obstetric; D011247:Pregnancy; D013223:Statistics as Topic; D013972:Thyrotropin / Q000097:blood*; D014554:Urination
D001127:Arginine Vasopressin; D013972:Thyrotropin