Abstract
The type of acidemia (umbilical arterial pH less than 7.2) occurring in newborns with second-stage baseline fetal heart rate (FHR) abnormalities was evaluated in 277 term gestations. Umbilical arterial acidemia occurred in 40% of the neonates with moderate to severe bradycardia (25 of 63), in 30% with mild bradycardia (16 of 53), and in 22% with tachycardia (seven of 32), compared with only 6% (eight of 129) of those with a normal FHR (P < .05 in each of the three comparisons). The majority (31 of 56, 55%) of the acidemic neonates had a mixed respiratory-metabolic pattern, whereas 13 of 56 (23%) had a respiratory pattern and 12 of 56 (21%) had a metabolic pattern. The mean umbilical arterial buffer deficit (mEq/L) was significantly greater (P < .0005) in newborns with metabolic acidemia (-15.9 ± 2.8) than in those with either mixed (-9.6 ± 2.5) or respiratory (-6.4 ± 1.9) acidemia. We conclude that baseline second-stage FHR abnormalities can predict which newborns are at increased risk of having umbilical arterial pH below 7.2 at birth. Selective determination of umbilical arterial pH and blood gas analysis may be useful in assessing intrapartum management retrospectively.
| Original language | English |
|---|---|
| Pages (from-to) | 191-195 |
| Number of pages | 5 |
| Journal | Obstetrics and Gynecology |
| Volume | 70 |
| Issue number | 2 |
| State | Published - 1987 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Obstetrics and Gynecology
Cite this
Second-stage fetal heart rate abnormalities and type of neonatal acidemia. / Gilstrap, L. C.; Hauth, J. C.; Hankins, Gary; Beck, A. W.
In: Obstetrics and Gynecology, Vol. 70, No. 2, 1987, p. 191-195.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Second-stage fetal heart rate abnormalities and type of neonatal acidemia
AU - Gilstrap, L. C.
AU - Hauth, J. C.
AU - Hankins, Gary
AU - Beck, A. W.
PY - 1987
Y1 - 1987
N2 - The type of acidemia (umbilical arterial pH less than 7.2) occurring in newborns with second-stage baseline fetal heart rate (FHR) abnormalities was evaluated in 277 term gestations. Umbilical arterial acidemia occurred in 40% of the neonates with moderate to severe bradycardia (25 of 63), in 30% with mild bradycardia (16 of 53), and in 22% with tachycardia (seven of 32), compared with only 6% (eight of 129) of those with a normal FHR (P < .05 in each of the three comparisons). The majority (31 of 56, 55%) of the acidemic neonates had a mixed respiratory-metabolic pattern, whereas 13 of 56 (23%) had a respiratory pattern and 12 of 56 (21%) had a metabolic pattern. The mean umbilical arterial buffer deficit (mEq/L) was significantly greater (P < .0005) in newborns with metabolic acidemia (-15.9 ± 2.8) than in those with either mixed (-9.6 ± 2.5) or respiratory (-6.4 ± 1.9) acidemia. We conclude that baseline second-stage FHR abnormalities can predict which newborns are at increased risk of having umbilical arterial pH below 7.2 at birth. Selective determination of umbilical arterial pH and blood gas analysis may be useful in assessing intrapartum management retrospectively.
AB - The type of acidemia (umbilical arterial pH less than 7.2) occurring in newborns with second-stage baseline fetal heart rate (FHR) abnormalities was evaluated in 277 term gestations. Umbilical arterial acidemia occurred in 40% of the neonates with moderate to severe bradycardia (25 of 63), in 30% with mild bradycardia (16 of 53), and in 22% with tachycardia (seven of 32), compared with only 6% (eight of 129) of those with a normal FHR (P < .05 in each of the three comparisons). The majority (31 of 56, 55%) of the acidemic neonates had a mixed respiratory-metabolic pattern, whereas 13 of 56 (23%) had a respiratory pattern and 12 of 56 (21%) had a metabolic pattern. The mean umbilical arterial buffer deficit (mEq/L) was significantly greater (P < .0005) in newborns with metabolic acidemia (-15.9 ± 2.8) than in those with either mixed (-9.6 ± 2.5) or respiratory (-6.4 ± 1.9) acidemia. We conclude that baseline second-stage FHR abnormalities can predict which newborns are at increased risk of having umbilical arterial pH below 7.2 at birth. Selective determination of umbilical arterial pH and blood gas analysis may be useful in assessing intrapartum management retrospectively.
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UR - http://www.scopus.com/inward/citedby.url?scp=0023253579&partnerID=8YFLogxK
M3 - Article
VL - 70
SP - 191
EP - 195
JO - Obstetrics and Gynecology
JF - Obstetrics and Gynecology
SN - 0029-7844
IS - 2
ER -