Table 1. Summaries of clinical characteristics of pregnancies complicated by congenital myotonic dystrophy.
| Case | Age | ART | Maternal symptom | Prenatal ultrasonographic findings | Mode of delivery | GA at birth | Birth weight (g) | Apgar score | NICU hospital day | Mortality | No. of CTG repeats | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Polyhydramnios | GA at detection | Maximum AFI | Decreased FM | 1-min | 5-min | Maternal | Neonatal | |||||||||
| 1 | 37 | IVF | Foot drop | + | 32+5 | 37 | + | CS | 34+6 | 2,058 | 2 | 4 | 397 | - | NA | 2,700 |
| 2 | 29 | - | Grip myotonia | + | 30+4 | 66 | + | CS | 36+6 | 2,985 | 5 | 6 | 29 | - | 1,000 | 1,300 |
| 3 | 29 | NA | - | NA | NA | + | CS | 38+0 | 3,600 | NA | NA | 20 | - | 166 | 1,100 | |
| 4 | 31 | IUI | - | NA | NA | - | CS | 38+2 | 3,140 | 9 | 9 | 21 | - | 670 | 1,300 | |
| 5 | 33 | NA | - | NA | NA | NA | CS | 29+1 | 1,380 | 2 | 2 | 260 | - | 350 | 1,000 | |
| 6 | 30 | - | - | - | 22 | - | CS | 38+5 | 3,450 | 8 | 9 | 24 | - | 300 | 700 | |
| 7 | 34 | - | - | + | 30+0 | 43 | - | CS | 31+5 | 1,710 | 1 | 4 | 91 | - | NA | 1,700 |
| 8 | NA | NA | - | NA | NA | NA | CS | 40+0 | 3,200 | NA | NA | + | - | NA | NA | |
| 9 | 29 | NA | - | NA | NA | NA | CS | 37+0 | 2,850 | 8 | 9 | 5 | - | 400 | 1,270 | |
| 10 | 40 | IVF | - | + | 30+2 | 45 | - | CS | 31+0 | 1,640 | 4 | 6 | 45 | + | NA | 2,000 |
| 11 | 33 | IVF | - | - | 24 | - | CS | 34+5 | 2,100 | 2 | 6 | 75 | - | 500 | NA | |
ART, assisted reproductive technology; AFI, amniotic fluid index; GA, gestational age; FM, fetal movement; NICU, neonatal intensive care unit; CTG, cytosine-thymine-guanine; IVF, in vitro fertilization; CS, cesarean section; NA, not available; IUI, intrauterine insemination.