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Fetal scalp blood s...
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Stål, IngridGothenburg University,Göteborgs universitet,Institutionen för kliniska vetenskaper, Avdelningen för obstetrik och gynekologi,Institute of Clinical Sciences, Department of Obstetrics and Gynecology
(author)
Fetal scalp blood sampling during second stage of labor - analyzing lactate or pH? A secondary analysis of a randomized controlled trial
- Article/chapterEnglish2022
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2020-03-31
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Informa UK Limited,2022
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LIBRIS-ID:oai:gup.ub.gu.se/292349
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https://gup.ub.gu.se/publication/292349URI
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https://doi.org/10.1080/14767058.2020.1743656DOI
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http://kipublications.ki.se/Default.aspx?queryparsed=id:143364169URI
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
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Background: Cardiotocography (CTG) is a widely used method for assessing fetal wellbeing during labor. It is well-known that CTG has high sensitivity but low specificity. To avoid unnecessary operative interventions, adjunctive methods such as fetal blood sampling (FBS) are used. Few studies have looked into whether FBS can be used during second stage of labor, and in that case, which of the methods (lactate or pH) are preferred. Objective: To evaluate clinical effectiveness of measuring lactate versus pH in preventing birth acidemia when FBS was performed during second stage of labor. Methods: Secondary analysis of a randomized controlled trial . Thousand three hundred and thirty-eight women with a singleton pregnancy, cephalic presentation, gestational age >= 34 weeks, and indication for FBS during second stage of labor were included. Main outcome measures: Metabolic acidemia (pH 12 mmol/l) or pH < 7.00 in cord arterial blood at birth. Secondary outcomes: A composite outcome (metabolic acidemia, pH <7 or Apgar score <4), and rates of operative deliveries. Results: Metabolic acidemia occurred in 4.1% in the lactate versus 5.1% in the pH group (relative risk (RR): 0.80; 95% confidence interval (CI): 0.48-1.35) and pH <7 in 1.4% versus 2.8% (RR: 0.51, 95% CI: 0.23-1.13). Composite outcome was found in 3.8 versus 4.9%, respectively (RR: 0.76; 95% CI: 0.46-1.26). No difference in total operative interventions was found. More cesarean deliveries were performed in the lactate group (16.5 vs. 12.4%; RR: 1.33; 95% CI: 1.02-1.74). Conclusion: When analyzing lactate or pH in fetal scalp blood during second stage of labor neonatal outcomes were comparable. The frequency of total operative interventions was similar but more cesarean deliveries were performed in the lactate group.
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Wennerholm, Ulla-Britt,1948Gothenburg University,Göteborgs universitet,Institutionen för kliniska vetenskaper, Avdelningen för obstetrik och gynekologi,Institute of Clinical Sciences, Department of Obstetrics and Gynecology(Swepub:gu)xwennu
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Nordstrom, L.
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Ladfors, Lars,1951Gothenburg University,Göteborgs universitet,Institutionen för kliniska vetenskaper, Avdelningen för obstetrik och gynekologi,Institute of Clinical Sciences, Department of Obstetrics and Gynecology(Swepub:gu)xladla
(author)
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Wiberg-Itzel, E.Karolinska Institutet
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Göteborgs universitetInstitutionen för kliniska vetenskaper, Avdelningen för obstetrik och gynekologi
(creator_code:org_t)
Related titles
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In:Journal of Maternal-Fetal & Neonatal Medicine: Informa UK Limited35:6, s. 1100-10071476-70581476-4954
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