All tables are from Parer and Ikeda, AJOG 2007
TABLE 5: Risk categories for fetal acidemia related to FHR variability, baseline rate and presence of recurrent decelerations
MODERATE (NORMAL) VARIABLILTY
| No | Early | Mild VD | Mod VD | Sev VD | Mild LD | Mod LD | Sev LD | Mild PD | Mod PD | Sev PD | |
| Tachy | B | B | B | Y | O | Y | Y | O | Y | Y | O |
| Normal | G | G | G | B | Y | B | Y | Y | Y | Y | O |
| Mild Brd | Y | Y | Y | Y | O | Y | Y | O | Y | Y | O |
| Mod Brd | Y | Y | O | O | O | O | |||||
| Sev Brd | O | O | O | O | O |
MINIMAL VARIABILITY
| No | Early | Mild VD | Mod VD | Sev VD | Mild LD | Mod LD | Sev LD | Mild PD | Mod PD | Sev PD | |
| Tachy | B | Y | Y | O | O | O | O | R | O | O | R |
| Normal | B | B | Y | O | O | O | O | R | O | O | R |
| Mild Brd | O | O | R | R | R | R | R | R | R | R | R |
| Mod Brd | O | O | R | R | R | R | |||||
| Sev Brd | R | R | R | R | R |
ABSENT VARIABILITY
| No | Early | Mild VD | Mod VD | Sev VD | Mild LD | Mod LD | Sev LD | Mild PD | Mod PD | Sev PD | |
| Tachy | R | R | R | R | R | R | R | R | R | R | R |
| Normal | O | R | R | R | R | R | R | R | R | R | R |
| Mild Brd | R | R | R | R | R | R | R | R | R | R | R |
| Mod Brd | R | R | R | R | R | R | |||||
| Sev Brd | R | R | R | R | R |
| Sinusoidal | R |
| Marked Variability | Y |
VD = variable deceleration
LD = late deceleration
PD = prolonged deceleration
Brd = bradycardia
Tachy = tachycardia
G= green; B=blue; Y=yellow; O=orange; R=Red
Table 4: Proposed management of the color-coded categories (will vary depending on institution).
Conservative techniques | Operating Room | Obstetrician | Anesthestist | Newborn Resuscitator | Location of Patient | |
| Green | No | - | - | - | - | - |
| Blue | Yes | Available | Informed | |||
| Yellow | Yes | Available | At bedside | Informed | Informed | |
| Orange | Yes | Immediately Available | At bedside | Present | Immediately Available | OR |
| Red | Yes | Open | At bedside | Present | Present | OR |
Table 2: Risk of acidemia, evolution to a more serious pattern, recommended action
| Risk of acidemia | Risk of evolution | Action | |
| Green | 0 | Very low | None |
| Blue | 0 | Low | CT and begin preparation |
| Yellow | 0 | Moderate | CT and increased surveillance |
| Orange | Borderline/acceptaby low | High | CT and prep for urgent delivery |
| Red | Unacceptaby high | Not a consideration | Deliver |
CT = conservative techniques:
Position change
Hyperoxia
Correct hypotension
Adequate intravascular volume
Correct excessive contractions (e.g. decrease oxytocin)
Avoid constant pushing
Tocolysis
Amnioinfusion to correct amniotic fluid deficit