Comparison of a computer system evaluation of intrapartum cardiotocographic events and a consensus of clinicians
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Maria Antónia Costa
Abstract
Aims: To compare between computer analysis of intrapartum cardiotocography (CTG) features by the Omniview-SisPorto® 3.5 and a consensus of clinicians.
Methods: Agreement study using 50 consecutively acquired tracings (206 h of signals) with >60 min duration, <10% signal loss and recorded in labor at term by internal fetal heart rate (FHR) monitoring. Tracings were divided into 10-min segments and independently analyzed by three experienced clinicians, in order to estimate the FHR baseline and identify periodic events. A consensus was reached using a three round Delphi procedure. Results were compared with the analysis provided by the Omniview-SisPorto® 3.5 system.
Results: For baseline estimation, agreement between the computer and the consensus was high [intraclass correlation coefficient (ICC)=0.85; 95% confidence interval (CI) 0.46–0.93], with a mean difference of 3.7 bpm (limits of agreement –4.4–11.9 bpm), and 99% of differences under 15 bpm. A concordant identification was observed in 71% of accelerations (95% CI: 69%–73%), 68% of decelerations (95% CI: 66%–70%), and 87% of uterine contractions (95% CI: 85%–89%).
Conclusions: A high agreement was observed between the Omniview-SisPorto® 3.5 and a consensus of clinicians in evaluation of intrapartum CTG baseline, accelerations, decelerations and uterine contractions.
©2010 by Walter de Gruyter Berlin New York
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- A template for defining the perinatal care of monochorionic twins: the Istanbul international ad hoc committee
- Recommendations and guidelines for perinatal practice
- Guidelines for the management of postterm pregnancy
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