Table 7.
Sonographic cesarean section (CS) scar measurement and localization at 12‐month follow up and relation to cervical dilation at time of delivery. Characteristics are presented as mean ± SD for normally distributed variables, median and interquartile range for non‐normally distributed variables
| Parameter | Closure technique | P | |
|---|---|---|---|
| Single‐layer (n = 149) | Double‐layer (n = 175) | ||
| CS scar description | |||
| Scar measurements and localization | |||
| Total myometrial thickness (mm) | 10.0 (8.5‐11.5) | 10.0 (8.6‐11.7) | 0.777b |
| Residual myometrial thickness (mm) | 4.6 (±1.9) | 5.2 (±2.2) | 0.019a |
| Width of the defect (mm) | 4.8 (3.2‐6.6) | 4.0 (3.0‐5.4) | 0.002b |
| Scar‐external cervical os distance (mm) | 33.0 (29.0‐37.0) | 30.0 (25.7‐34.7) | 0.002b |
| Residual myometrial thicknes <2.5 mm | 18 (12.2) | 12 (6.8) | 0.019a |
| CS scar description and relation to vaginal finding at CS indication | |||
| Total myometrial thickness | |||
| No cervical dilation | 10.5 (±2.6) | 10.1 (±2.0) | 0.533c |
| Partial cervical dilation | 10.2 (±2.1) | 10.2 (±1.8) | |
| Full cervical dilation | 8.8 (±2.4) | 9.9 (±2.4) | |
| Residual myometrial thickness | |||
| No cervical dilation | 4.8 (±1.7) | 5.7 (±2.1) | 0.010c |
| Partial cervical dilation | 4.7 (±2.0) | 5.0 (±1.9) | |
| Full cervical dilation | 4.3 (±2.2) | 5.0 (±2.5) | |
| Width of the defect | |||
| No cervical dilation | 5.6 (±2.8) | 4.3 (±2.1) | 0.001c |
| Partial cervical dilation | 4.7 (3.2‐6.0) | 4.0 (3.2‐5.5) | |
| Full cervical dilation | 4.0 (2.9‐7.3) | 4.0 (3.1‐5.3) | |
| Scar‐external cervical os distance | |||
| No cervical dilation | 35.5 (29.3‐37.0) | 33.0 (29.0‐39.0) | 0.000c |
| Partial cervical dilation | 33.6 (±6.1) | 30.1 (±5.5) | |
| Full cervical dilation | 28.9 (±9.0) | 27.0 (±5.8) | |
Student′s t test.
Wilcoxon‐Mann‐Whitney test.
Two‐way ANOVA (with interaction).