Comparison of a computer system evaluation of intrapartum cardiotocographic events and a consensus of clinicians.
To compare between computer analysis of intrapartum cardiotocography (CTG) features by the Omniview-SisPorto 3.5 and a consensus of clinicians.



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.



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%).



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.
Costa
Maria Antónia
MA
Instituto Nacional de Engenharia Biomédica-INEB, Porto, Portugal. cosantonia@gmail.com
Ayres-de-Campos
Diogo
D
Machado
Ana P
AP
Santos
Cristina C
CC
Bernardes
João
J
D000465:Algorithms; D015148:Cardiotocography / Q000295:instrumentation / Q000379:methods*; D003936:Diagnosis, Computer-Assisted / Q000295:instrumentation / Q000379:methods*; D005260:Female; D005318:Fetal Heart / Q000502:physiology; D005323:Fetal Monitoring / Q000295:instrumentation / Q000379:methods*; D006801:Humans; D010820:Physicians; D011247:Pregnancy