1. Fetal Heart Rate Tracing Category II: A Broad Category in Need of Stratification
- Author
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Alexander G. Shilkrut, Richard Hsu, and Aleksandr M. Fuks
- Subjects
medicine.medical_specialty ,Cardiotocography ,Tracing ,Child health ,03 medical and health sciences ,Fetus ,0302 clinical medicine ,Pregnancy ,030225 pediatrics ,medicine ,Humans ,030212 general & internal medicine ,Cesarean delivery ,Intensive care medicine ,Clinical scenario ,Broad category ,Labor, Obstetric ,Cesarean Section ,business.industry ,Infant, Newborn ,Heart Rate, Fetal ,Category II Tracing ,Fetal heart rate ,Neonatal outcomes ,Pediatrics, Perinatology and Child Health ,Female ,business - Abstract
Fetal heart rate (FHR) tracings are classified into 3 categories per the National Institute of Child Health and Human Development guidelines. There exists broad consensus on the recognition and management of categories I and III. However, a category II FHR tracing is considered “indeterminate” and cannot be classified as either reassuring or non-reassuring. Absence of variability and high frequency and increased depth of decelerations are the key determining factors that make a category II tracing non-reassuring and are associated with fetal metabolic acidosis. Periodic category II tracing is present in the majority of normal laboring patients. In the setting of a category II tracing, an initial attempt should be made for in utero resuscitation of the fetus. If the tracing fails to improve over a period of 1 to 2 hours, or the fetal tracing gradually deteriorates, a decision should be made for operative vaginal or cesarean delivery. Category II tracing management algorithms can aid in decision-making in this uncertain clinical scenario. Team training and simulation may improve team performance and have a positive impact on neonatal outcomes.
- Published
- 2021
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