Accelerations
An acceleration corresponds to a sudden rise in the FHR (≥ 15 bpm) with an abrupt slope (< 30 s), lasting 15 seconds or more and less than 10 minutes. If gestational age is less than 32 weeks, an acceleration ≥ 10 bpm AND ≥ 10 s is taken into account (CNGOF 2007[2], Ayres de Campos 2015b[1]).
- Spontaneous accelerations unrelated to uterine contractile activity are called sporadic.
- Accelerations associated with uterine contractions are called periodic.
- An acceleration is said to be prolonged if it lasts between 2 and 10 minutes; beyond 10 minutes, it is considered a rise in the baseline rate.
References
- Ayres-de-Campos D., Spong C. Y., et Chandraharan E. FIGO consensus guidelines on intrapartum fetal monitoring: Cardiotocography. International Journal of Gynecology & Obstetrics, 131 (1): 13–24, 2015b. ISSN 0020-7292. doi: 10.1016/j.ijgo.2015.06.020. ↩
- CNGOF. Recommandations pour la pratique clinique : Modalités de surveillance fœtale pendant le travail, 2007. ↩
- Langer B., Vayssière C., Haberstich R., Langer B., et Nisand I. Adaptation du fœtus au travail. Encycl Méd Chir, Obstétrique (5-006-A-15): 1–5, 2017.
- Van Lierde M. et Béliard A. Physiopathologie des altérations du rythme cardiaque fœtal. Références en gynécologie obstétrique, 1 (6): 528–536, 1993. ISSN 1244-8168.