OBJECTIVE: To determine the frequency of ST-changes in the fetal electrocardiogram (ECG) both during normal and abnormal fetal heart (FHR) traces and to study relations with characteristics of pregnancy and delivery. STUDY DESIGN: Retrospective analysis of 563 FHR+ECG-recordings. ST-changes were counted for all recordings with respect to their FHR pattern. Relationships between the occurrence of ST-events and characteristics of pregnancy and delivery were determined for the recordings with a completely normal FHR tracing during the first stage. RESULTS: ST-events were present during 51.7% of recordings in the first stage of labour and during 24.3% of the recordings in the second stage. Surprisingly, events occurred during the first stage at a similar incidence during normal and abnormal FHR-patterns. During the second stage of labour events also occurred in a similar percentage of normal, intermediary and abnormal recordings, but - if present - events were more numerous during the abnormal FHR traces. In the subgroup of cases with a normal FHR pattern more events per hour occurred in babies born at 36-37 weeks of gestation and in boys. CONCLUSION: ST-events are a frequent finding during normal FHR tracings.
OBJECTIVE: To determine the frequency of ST-changes in the fetal electrocardiogram (ECG) both during normal and abnormal fetal heart (FHR) traces and to study relations with characteristics of pregnancy and delivery. STUDY DESIGN: Retrospective analysis of 563 FHR+ECG-recordings. ST-changes were counted for all recordings with respect to their FHR pattern. Relationships between the occurrence of ST-events and characteristics of pregnancy and delivery were determined for the recordings with a completely normal FHR tracing during the first stage. RESULTS: ST-events were present during 51.7% of recordings in the first stage of labour and during 24.3% of the recordings in the second stage. Surprisingly, events occurred during the first stage at a similar incidence during normal and abnormal FHR-patterns. During the second stage of labour events also occurred in a similar percentage of normal, intermediary and abnormal recordings, but - if present - events were more numerous during the abnormal FHR traces. In the subgroup of cases with a normal FHR pattern more events per hour occurred in babies born at 36-37 weeks of gestation and in boys. CONCLUSION: ST-events are a frequent finding during normal FHR tracings.
Authors: Rik Vullings; Kim M J Verdurmen; Alexandra D J Hulsenboom; Stephanie Scheffer; Hinke de Lau; Anneke Kwee; Pieter F F Wijn; Isis Amer-Wåhlin; Judith O E H van Laar; S Guid Oei Journal: PLoS One Date: 2017-04-14 Impact factor: 3.240
Authors: Peter Andriessen; Alex Zwanenburg; Judith O E H van Laar; Rik Vullings; Ben J M Hermans; Hendrik J Niemarkt; Reint K Jellema; Daan R M G Ophelders; Tim G A M Wolfs; Boris W Kramer; Tammo Delhaas Journal: PLoS One Date: 2018-04-16 Impact factor: 3.240
Authors: Alexandra D J Hulsenboom; Kim M J Verdurmen; Rik Vullings; M Beatrijs van der Hout-van der Jagt; Anneke Kwee; Judith O E H van Laar; S Guid Oei Journal: PLoS One Date: 2019-03-26 Impact factor: 3.240