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Fetal electrocardiogram ST‐segment analysis and prediction of neonatal acidosis
Author(s) -
Vayssiere C.,
Haberstich R.,
Sebahoun V.,
David E.,
Roth E.,
Langer B.
Publication year - 2007
Publication title -
international journal of gynecology and obstetrics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.895
H-Index - 97
eISSN - 1879-3479
pISSN - 0020-7292
DOI - 10.1016/j.ijgo.2007.01.003
Subject(s) - medicine , acidosis , fetus , fetal monitoring , cardiology , obstetrics , pregnancy , genetics , biology
Objective : To determine the diagnostic value of fetal ST‐segment analysis (STAN) in predicting neonatal acidosis. Methods : The STAN S21® was used to monitor singleton fetuses in labor with abnormal FHR. Physicians later reviewed tracings to identify any ST events dictating intervention. Outcome measures were umbilical artery pH ≤ 7.15 and pH ≤ 7.05 at birth. The sensitivity, specificity, PPV, and NPV of a significant ST event to predict both outcomes were calculated. Results : Analysis included 411 women. Sensitivity of a significant ST event for screening pH ≤ 7.15 (21.9%) was 38% (41/108), specificity 83% (252/303), PPV 45% (41/92) and NPV 79% (252/319), and for pH ≤ 7.05, it was (3.4%), 62.5% (10/16), 79% (313/395), 11% (10/92), and 98% (313/319), respectively. Conclusion : In a population with abnormal FHR in labor, STAN sensitivity is moderate (almost 40%) for predicting pH ≤ 7.15 and better (almost 60%) for more severe acidosis (pH ≤ 7.05).