Perinatal Outcomes according to the Types of Fetal Acidosis in Term Newborns with Umbilical Artery Acidosis / 대한주산의학회잡지

PURPOSE:To investigate the significance of umbilical artery acidosis and compare perinatal outcomes according to the types of acidosis for a tertiary hospital population delivered at term. METHODS:We reviewed maternal and neonatal medical records of all term liveborn infants with an umbilical artery pH or =20 mEq/L) and high pCO2 (> or =20 mmHg) were significantly associated with low pH value, the perinatal outcomes were not significantly different according to the level of base deficit or pCO2. CONCLUSION:The mixed acidemia was more associated with pathologic fetal acidemia than pure respiratory or metabolic acidosis. The ability to predict not only metabolic but also respiratory component of fetal acidemia may help in safe management of delivery leading to reduce the fetal acidemia.

Umbilical cord artery blood pH analysis at term pregnancy / 대한주산의학회잡지

OBJECTIVE: To assess the gestational age adjusted values of umbilical cord artery blood pH in term pregnancy METHODS: We retrospectively analyzed umbilical arterial blood pH values and obstetric data of 1,918 term singleton deliveries without maternal medical disease, pregnancy induced hypertension and fetal distress during labor periods at Kangnam St. Mary's Hospital, Catholic University medical college between January 2004 and December 2006. Low pH was defined as less than 7.10 as a stationary cutoff value, whereas pH less than (mean -2 standard deviations [SDs]) was used when gestational age was considered. We evaluated the risk of 5 minute Apgar score of less than 7 and meconium staining more than grade II at low pH. RESULTS: A significant negative correlation was found between gestational age and umbilical artery pH (p=0.000). We evaluated the umbilical artery pH value in different delivery mode. Vaginal delivery cases showed negative correlation (p=0.000), but elective cesarean section cases didnt. Low pH patients defined by both criteria of pH less than 7.10 and pH less than (mean -2SD) showed significantly increased risk of 5 minutes Apgar score of less than 7 (pH less than 7.10: p=0. 000, pH less than (mean -2SD): p=0.001) and meconium staining more than grade II (pH less than 7.10: p=0. 001, pH less than (mean -2SD): p=0.001). CONCLUSION: Our results suggest that umbilical cord pH has a negative relation with gestational age during term period.

Umbilical Cord Arterial Blood pH Analysis at Term Pregnancy / 대한산부인과학회잡지

OBJECTIVE: The purpose of this study was to assess the gestational age adjusted values of umbilical cord arterial blood pH in term pregnancy with normal Apgar score. METHODS: We performed in attempt to compare umbilical arterial blood pH values for in term 757 singleton pregnancy, immediately after delivery of live-born infants delivery, with normal 1 and 5 minutes Apgar score. They were divided into 380 cases of normal full term vaginal delivery without any complication and 377 cases of elective cesarean section with normal fetal heart rate tracing. We determined gestational age, parity, Apgar score. RESULTS: There was a significant decline correlation between gestational age and umbilical artery pH (P=0.018). In acidemia, the odds ratio was increasing from 37 weeks to 41 weeks but there was no association between normal Apgar score and pH less than 7.10 with increasing gestational age. We evaluated the umbilical artery pH level in different delivery mode. In uncomplicated normal vaginal delivery, negative significant correlation was found (P=0.022), and elective cesarean section case did not show a statistically significant level. CONCLUSION: Our data suggested that umbilical artery pH has a negative relation with gestational age during term period.