LOINC long common name : Heart rate 10 minutes mean Fetus;
LOINC short name : Fet 10M Mean Heart rate;
LOINC description : In the early stages of development the fetal heart rate (FHR) is controlled by the
sympathetic nervous system and arterial chemoreceptors. As gestation continues, the
FHR decreases and its variability increases due to the maturation of the parasympathetic
nervous system. The National Institute of Child Health and Human Development have
recommended the adoption of standardized guidelines for the interpretation of FHRs.
The following parameters of the fetal heart tracing should be systematically evaluated
with both qualitative and quantitative descriptions: 1. Baseline rate 2. Baseline
FHR 3. Presence of accelerations 4. Periodic or episodic decelerations 5. Changes
or trends of FHR over time 6. Frequency and intensity of uterine contractions The
baseline FHR is determined by measuring the heart rate for ten minutes that is rounded
to the nearest 5 minute interval, and excludes stretches with significant FHR variability,
periodic or episodic changes, and segments of baseline that vary by greater than 25
beats per minute. The baseline must last a minimum of two minutes, and if it is less
than two minutes it will be considered indeterminate. A change in the baseline FHR
is defined as a decrease or increase of heart rate that persists for more than ten
minutes.[http://perinatology.com/Fetal%20Monitoring/Intrapartum%20Monitoring.htm];
Has component