TY - JOUR
T1 - Bioelectrical impedance analysis during pregnancy and neonatal birth weight
AU - Ghezzi, Fabio
AU - Franchi, Massimo
AU - Balestreri, Debora
AU - Lischetti, Barbara
AU - Mele, Maria Cristina
AU - Alberico, Salvatore
AU - Bolis, Pierfrancesco
PY - 2001
Y1 - 2001
N2 - Objective: To generate reference ranges for bioelectrical impedance indices throughout pregnancy and to investigate whether a relationship exists between these indices and the neonatal birth weight. Study design: Pregnant women with a singleton gestation, gestational age lower than 12 weeks, and absence of medical diseases before pregnancy were enrolled. Patients with pregnancy complications, such as hypertensive disorders, diabetes, and antiphospholipides syndrome were excluded. Antrophometric maternal parameters and bioelectrical impedance measurements were performed during the first, second, third trimester of pregnancy, at delivery and 60 days after delivery. Height
2 /resistance (cm
2/Ω) and height
2/reactance (cm
2/Ω) were utilized to estimate the total and extracellular body water amounts, respectively. Spearman rank correlations and cox proportional hazard modelling were used for statistical purposes. Results: 169 patients completed all measurements. Total and extracellular water amounts significantly increase as pregnancy advances and return to the pre-pregnancy values within 60 days after delivery. After adjustment for gestational age at delivery, fetal sex, and smoking habits, height
2/resistance at 25 weeks (hazard = 1.04, 95% confidence interval (CI) 1.02-1.06, P <0.005), height
2/resistance at 30 weeks (hazard = 1.03, 95% CI 1.01-1.05, P <0.005), height
2/reactance at 20 weeks (hazard = 1.03, 95% CI 1.01-1.05, P <0.005), and height
2/ reactance at 25 weeks (hazard = 1.03, 95% CI 1.01-1.04, P <0.01) were found to be independent predictors of birth weight. Conclusion: We have provided reference ranges for bioimpedance analysis during pregnancy, an easy, fast and non invasive method to estimate the body water composition during pregnancy. Bioelectrical impedance indices during the second trimester of pregnancy are independently related to the birth weight.
AB - Objective: To generate reference ranges for bioelectrical impedance indices throughout pregnancy and to investigate whether a relationship exists between these indices and the neonatal birth weight. Study design: Pregnant women with a singleton gestation, gestational age lower than 12 weeks, and absence of medical diseases before pregnancy were enrolled. Patients with pregnancy complications, such as hypertensive disorders, diabetes, and antiphospholipides syndrome were excluded. Antrophometric maternal parameters and bioelectrical impedance measurements were performed during the first, second, third trimester of pregnancy, at delivery and 60 days after delivery. Height
2 /resistance (cm
2/Ω) and height
2/reactance (cm
2/Ω) were utilized to estimate the total and extracellular body water amounts, respectively. Spearman rank correlations and cox proportional hazard modelling were used for statistical purposes. Results: 169 patients completed all measurements. Total and extracellular water amounts significantly increase as pregnancy advances and return to the pre-pregnancy values within 60 days after delivery. After adjustment for gestational age at delivery, fetal sex, and smoking habits, height
2/resistance at 25 weeks (hazard = 1.04, 95% confidence interval (CI) 1.02-1.06, P <0.005), height
2/resistance at 30 weeks (hazard = 1.03, 95% CI 1.01-1.05, P <0.005), height
2/reactance at 20 weeks (hazard = 1.03, 95% CI 1.01-1.05, P <0.005), and height
2/ reactance at 25 weeks (hazard = 1.03, 95% CI 1.01-1.04, P <0.01) were found to be independent predictors of birth weight. Conclusion: We have provided reference ranges for bioimpedance analysis during pregnancy, an easy, fast and non invasive method to estimate the body water composition during pregnancy. Bioelectrical impedance indices during the second trimester of pregnancy are independently related to the birth weight.
KW - Bioelectrical impedance analysis
KW - Birth weight
KW - Body water composition
KW - Pregnancy
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M3 - Article
C2 - 11574127
AN - SCOPUS:0035489039
VL - 98
SP - 171
EP - 176
JO - European Journal of Obstetrics, Gynecology and Reproductive Biology
JF - European Journal of Obstetrics, Gynecology and Reproductive Biology
SN - 0028-2243
IS - 2
ER -