Evaluation of umbilical cord pH and its relationship with Apgar score in term newborn infants
| Autor: | Daniela Kersting, Denise N. Pereira, Adriana Cardozo, Jaqueline N. Lubianca, Vera Lúcia L. Rocha, Renato S. Procianoy, Rita C. M. Azeredo |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
Asphyxia
congenital hereditary and neonatal diseases and abnormalities medicine.medical_specialty business.industry Obstetrics medicine.disease Umbilical cord Group B Perinatal asphyxia medicine.anatomical_structure Cord blood Pediatrics Perinatology and Child Health medicine Arterial pH Apgar score medicine.symptom Vein business reproductive and urinary physiology |
| Zdroj: | Jornal de Pediatria. 72:139-142 |
| ISSN: | 0021-7557 |
| DOI: | 10.2223/jped.598 |
| Popis: | The value of the Apgar score as an index of birth asphyxia has been recently questioned. The purpose of the present study is to evaluate the relationship between cord blood pH and Apgar score in term newborn infants.A cross-sectional study involving 76 term newborn infants was performed from March through September 1995 at the Obstetric Unit of Hospital de Clínicas de Porto Alegre. The blood samples were obtained from umbilical cord artery and vein at the moment of delivery. Infants were divided in three different groups according to the Apgar score: Group A (n=60):or=7 at one and five minutes; Group B (n=13):7 at one minute andor=7 at five minutes; Group C (n=3):7 at one and five minutes. The frequency of acidemia in Group A was 18.3% (11 newborn infants) considering arterial pH7.20 and 5% considering arterial pHor= 7.10. Three newborn infants (23%) of Group B had arterial pHor= 7.20 and nine (56.2%) had arterial pH7.10. None of the newborn infants in Group C had arterial pH7.10. The sensitivity and specificity values for Apgar score less than 7 at one minute for detection of fetal acidemia were, respectively, 54.1% and 94.1%. This study confirms a poor correlation between Apgar score and umbilical blood cord pH, even in a term newborn, and emphasizes the importance of obtaining umbilical cord pH to consider the diagnosis of perinatal asphyxia. |
| Databáze: | OpenAIRE |
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