Comparison of Dilapan-S and laminaria for cervical priming before surgical pregnancy termination at 17–22 weeks’ gestation

Figures & data

Table 1 Minimum millimeter (mm) cervical dilatation required at each gestation before osmotic dilator insertion on the morning of Day 2 and before dilatation and evacuation (D&E) procedure

Gestation in weeks	17	18	19	20	21	22
Cervical dilatation in mm before osmotic dilator insertion on Day 2	15	16	17	18	19	20
Cervical dilatation in mm before D&E operation	18	20	22	24	26	28

Table 2 Proportion of women undergoing dilatation and evacuation (D&E) on the morning of Day 2 and mean theater time in each of two laminaria tent cohorts and one Dilapan-S cohort by parity

Cohort	Nulliparous women			Parous women
	Cohort A 151 women laminaria	Cohort B 52 women laminaria	Cohort C 151 women Dilapan-S	Cohort A 151 women laminaria	Cohort B 52 women laminaria	Cohort C 151 women Dilapan-S
D&E morning Day 2	30 of 78 (38%)	10 of 34 (29%)	27 of 80 (34%)	40 of 71 (56%)	8 of 16 (50%)	27 of 71 (38%)
Mean D&E theater time	19.2 mins (n = 78)	17.6 mins (n = 34)	16.6 mins (n = 80)	19.0 mins (n = 71)	17.4 mins (n = 16)	17.0 mins (n = 71)

Figure 1 Dilapan-S before and after hydration.

Figure 2 Laminaria tents before and after hydration.