Propensity matched analysis of performed vaginal delivery versus performed caesarean section
| Vaginal delivery (n=447) | Caesarean section (n=447) | p Value | |
|---|---|---|---|
| Baseline | |||
| Age (years) | 29 | 30 | 0.004 |
| Nulliparous (%) | 52 | 48 | 0.13 |
| Medication pre pregnancy (%) | 27 | 28 | 0.66 |
| Mechanical valve (%) | 3.4 | 3.4 | 1.00 |
| NYHA classification | 0.39 | ||
| NYHA class 1 (%) | 70 | 67 | |
| NYHA class 2 (%) | 26 | 29 | |
| WHO category | 0.060 | ||
| WHO 1 (%) | 16 | 15 | |
| WHO 2 (%) | 40 | 38 | |
| WHO 3 (%) | 41 | 43 | |
| WHO 4 (%) | 2.7 | 3.8 | |
| Heart failure during pregnancy (%) | 10.5 | 11.4 | 0.71 |
| Anticoagulant use | 10.1 | 9.4 | 0.76 |
| Pre-eclampsia (%) | 2.2 | 5.6 | 0.017 |
| Outcome | |||
| Maternal mortality (%) | 0.9 | 0.9 | 1.00 |
| Postpartum heart failure (%) | 4.3 | 7.8 | 0.023 |
| Postpartum haemorrhage (%) | 4.0 | 4.9 | 0.63 |
| Perinatal mortality (%) | 2.7 | 1.1 | 0.14 |
| Neonatal mortality (%) | 0.7 | 0.7 | 1.00 |
| Pregnancy duration | 37 | 38 | 0.003 |
| Birth weight (g)* | 3073 | 2870 | <0.001 |
| Preterm birth (%) | 12.8 | 23.3 | <0.001 |
| APGAR <7 (%) | 10.1 | 11.9 | 0.45 |
*Birth weight corrected for maternal age, gestational age, smoking, preeclampsia, diabetes, fetal sex and nulliparity. NYHA, New York Heart Association.