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Table 1 Baseline characteristics of 980 patients who underwent ECV between October 2007 and June 2012

From: Fetal heart rate abnormalities during and after external cephalic version: Which fetuses are at risk and how are they delivered?

 

Total (n = 980)

CTG-abnormalities during or after ECV (n = 86)

No CTG-abnormalities during or after ECV (n = 894)

P-value

Maternal age (years)

 Mean, standard deviation

31.2 (4.1)

31.2 (3.7)

31.3 (4.2)

0.9

 Range

17–46

21–40

17–46

 

Parity

 Primiparous

626 (64%)

59 (69%)

567 (63%)

0.3

 Multiparous

354 (36%)

27 (31%)

327 (37%)

 

Gestational age at ECV (weeks and days)

 Median

35 + 6

36 + 0

35 + 6

0.4

 Range

34 + 0–41 + 5

34 + 0–38 + 0

34 + 2–41 + 5

 

Type of breech

 Non-Frank

323 (34%)

26 (30%)

297 (34%)

0.5

 Frank

630 (66%)

60 (70%)

570 (66%)

 

Estimated Fetal Weight (EFW in grams)

 Mean, standard deviation

2591 (316)

2505 (276)

2599 (319)

0.009

 Range

1700–4000

1880–3526

1700–4000

 

Fundal height (centimeters)

 Mean, standard deviation

32.8 (1.7)

32.2 (1.2)

32.8 (1.7)

0.01

 Range

26–40

29–35

26–40

 

Engagement

 Breech above pelvic inlet

481 (50%)

35 (41%)

446 (51%)

0.08

 Breech in pelvic inlet

485 (50%)

51 (59%)

434 (49%)

 

Head palpable

 No

64 (7%)

4 (5%)

60 (7%)

0.5

 Yes

912 (93%)

82 (95%)

830 (93%)

 

Placenta location

 Posterior/lateral

582 (60%)

55 (65%)

527 (59%)

0.3

 Anterior

394 (40%)

30 (35%)

364 (41%)

 

Amniotic Fluid Index (AFI in cm)

 > 10

392 (40%)

25 (29%)

367 (41%)

0.03

 ≤ 10

586 (60%)

61 (71%)

525 (59%)

 

Duration ECV (in minutes)

 Median

2.50

4.15

2.45

< 0.001

 Range

0.15–16.05

0.30–16.05

0.15–15.45

 

Number of ECV attempts

 Mean, standard deviation

2.2 (1.4)

2.3 (1.4)

2.2 (1.4)

0.5

 Range

1–7

1–6

1–7

 

ECV success

 Yes

584 (60%)

55 (64%)

529 (59%)

0.4

 No

396 (40%)

31 (36%)

365 (41%)

 

Delivery mode

 Spontaneous vaginal

494 (50%)

48 (56%)

446 (50%)

0.3

 Assisted vaginal and caesarean section

486 (50%)

38 (44%)

448 (50%)

 

Gender newborn

 Boy

440 (45%)

40 (48%)

400 (45%)

0.6

 Girl

537 (55%)

44 (52%)

493 (55%)

 

Birth weight (grams)

 Median

3322

3201

3325

0.009

 Range

1700–4705

1782–4280

1700–4705