Table 3.
Predictive scoring model for deliveries before labor during vaginal birth after cesarean
| Variable | Points | Variable | Points |
|---|---|---|---|
|
Maternal age at delivery (years) <35 ≥ 35 |
2 0 |
IT diameter (cm) > 9.0 8.0–9.0 7.5 7.0 < 7.0 |
3 2 1 0 -1 |
|
Previous vaginal delivery yes no |
4 0 |
Maternal pre-delivery BMI (Kg/m2) < 30 ≥ 30 and <50 ≥ 50 |
2 1 0 |
|
Interdelivery interval (years) 2–4 <2 or >4 |
2 0 |
Gestational age at delivery (weeks) <34 ≥ 34 and <37 37–40 ≥ 41 |
3 2 1 0 |
|
TOL during prior CD yes no |
1 0 |
Estimated fetal weight (g) <1750 2000 ± 250 2500 ± 250 3000 ± 250 3500 ± 250 4000 ± 250 >4250 |
5 4 3 2 1 0 -1 |
|
Dystocia as prior CD indication no yes |
1 -1 |
Hypertensive disorders no GH or CH Preeclampsia Severe Preeclampsia Eclampsia |
3 2 1 0 -3 |
VBAC vaginal birth after cesarean; IT Intertuberous; BMI body mass index (at delivery, kg/m2); GH gestational hypertension; CH chronic hypertension