Validity of short term variation (STV) in detection of fetal acidemia
| Autor: | Juan Piazze, Angelo Ruozi-Berretta, Maurizio M. Anceschi, Erich Cosmi, Luca Maranghi, Ermelando V. Cosmi, A. Cerekja |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
medicine.medical_specialty
Cardiotocography Gestational Age Sensitivity and Specificity Pregnancy medicine.artery Heart rate Medicine Humans Observer Variation Fetus medicine.diagnostic_test business.industry Obstetrics Singleton Cesarean Section Computers Obstetrics and Gynecology Gestational age Reproducibility of Results Umbilical artery Heart Rate Fetal Hydrogen-Ion Concentration medicine.disease Fetal Blood Fetal Diseases Anesthesia Pediatrics Perinatology and Child Health Gestation Female Blood Gas Analysis business Acidosis |
| Zdroj: | Journal of perinatal medicine. 31(3) |
| ISSN: | 0300-5577 |
| Popis: | We aimed to establish a cut-off for short term variation (STV) in msec in electronic FHR tracings as a single parameter for the prediction of neonatal acidemia and hypercarbia at birth.195 consecutive cases of singleton pregnancies between 26 to 42 weeks' gestation delivered by cesarean section, with an antepartum tracing performed within 4 hours from birth and umbilical artery gas analysis (UBGA) available at birth.A positive correlation (r = 0.27, p0.0001) was found when STV was regressed against gestational age. We also found significant correlations between STV and UBGA parameters (pH [r = 0.12, p0.05] and pCO2 [r = -0.17, p0.01]). In order to evaluate the influence of gestational age on STV values, we subdivided patients into three subgroups (34 weeks: n = 31; 35-37 weeks: n = 37, and37 wks: n = 127). Only in the subgroup34 wks, STV5.1 msec was a significant predictor of acidemia (pH7.0), (sensitivity: 100%, specificity: 61%, p0.05); in the same subgroup STV4.9 msec predicted pCO260 mmHg with a sensitivity: 71.4% and a specificity: 62.5% (p0.02).In cases34 weeks' gestation, STV values below 4.9 msec and 5.1 msec are able to predict umbilical artery pH7.0 and PCO260 mmHg, respectively. |
| Databáze: | OpenAIRE |
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