. Author manuscript; available in PMC: 2016 Dec 1.

Published in final edited form as: Am J Obstet Gynecol. 2015 Aug 15;213(6):830.e1–830.e19. doi: 10.1016/j.ajog.2015.08.028

TABLE 4.

Intrauterine pressure and wall stress associated with balloon inflation

	Before balloon inflation			After balloon inflation
	Intrauterine pressure	Wall stress	Deviation from average wall stress	Intrauterine pressure	Pressure increase	Wall stress	Increase wall stress	Labor within 10 d
Experiment no.	Pa (torr)^a	N/m² × 10³	%	Pa (torr)^a	%	N/m² × 10³	%	Labor within 10 d
1	1600 (12)	134	5.4	2049 (15.4)	28	187	40	No

2	1600 (12)	128	1.1	2112 (15.8)	32	186	45	No

3	1600 (12)	127	0	2398 (18.0)	50	220	73	No

4	1600 (12)	123	–3.2	2500 (18.8)	56	224	83	Yes

5	1600 (12)	123	–2.8	2420 (18.2)	51	215	75	Yes

6	1600 (12)	126	–0.5	2145 (16.1)	34	187	48	Yes

Experiment number in Tables 1 and 3 correspond to same animals to allow for comparison across tables.

Pa is an International System of Units measure of pressure and stress defined as 1 N/m²; torr is a unit of pressure that is approximately equal to 1 mm Hg and is presented as this may be more intuitive for clinician.