Skip to main content
. 2021 Oct 18;29(6):1874–1894. doi: 10.1007/s43032-021-00749-2

Table 3.

Fetal Reserve Index components

Components of the Fetal Reserve Index
FHR
Baseline variability
Accelerations
Decelerations
Increased uterine activity
Maternal risk factors
Obstetrical risk factors
Fetal risk factors
Each factor scored as 1 if normal and 0 if not
Maximum of 8/8 = 100%
Green zone: > 50%
Yellow zone: 50 to 26%
Red zone: ≤ 25%