Labor dystocia and oxytocin augmentation before or after six centimeters cervical dilatation, in nulliparous women with spontaneous labor, in relation to mode of birth

Table 1 Maternal and obstetric characteristics of the study population

Cervix dilatation at diagnosis of dystocia and start of oxytocin infusion	≤ 5 cm n = 203	6–10 cm n = 183	Fully dilated n = 202	P-value
Age (years) mean [SD]	28.5 [4.8]	28.9 [4.3]	29.4 [4.3]	0.177
Smoking during pregnancy n (%)	5 (3)	5 (3)	1 (0.5)	0.202
Height (cm) mean [SD]	164.8 [6.0]	166.2 [6.0]	167.6 [6.1]	< 0.001
BMI (kg/m²) mean [SD]	25.7 [5.1]	25.8 [5.2]	24.5 [4.1]	0.013
Asthma/lung disease n (%)	21 (11)	8 (4)	18 (9)	0.075
Gestational age in days mean [SD]	283 [7.1]	282 [7.4]	281 [7.0]	0.14
Risk assessment on admission n (%)				< 0.001
Low risk	59 (29)	78 (43)	105 (52)
Medium risk	144 (71)	105 (57)	97 (48)
High risk	0	0	0
Active phase of first stage of labor in minutes, median [IQR]	736 [515–958]	790 [619–968]	604 [451–764]	< 0.001
Second stage of labor in minutes, median [IQR]	36 [21–49]	31,5 [21–50]	37 [24–57]	0.114

Data is presented as mean and [standard deviation] or median and [inter quartile range] for continuous variables and number and (percent) for categorical variables. Percent was calculated within dilatation groups. p < 0.05 was considered statistically significant
BMI Body mass index, IQR Inter quartile range

ISSN: 1471-2393