Table 3.

Changes in maternal NYHA cardiac functional classification during the perinatal periods for women with PH diagnosed by echocardiography.

Parameters	Moderate PH (n = 39)		Severe PH (n = 49)		p
	n	%	n	%
Before pregnancy
I	27	69.2	25	51.0
II	12	30.8	22	44.9
III	0	0.0	2	4.1	0.069
At admission
I	11	28.9	6	12.2
II	19	48.7	17	34.7
III	9	23.7	18	36.7
IV	0	0.0	8	16.4	0.002
After delivery
I	11	28.2	6	12.2
II	22	56.4	20	40.8
III	5	12.8	17	34.7
IV	1	2.6	6	12.2	0.002
End of follow-up
I	17	43.6	13	26.5
II	19	48.7	17	34.7
III	2	5.1	6	12.2
IV	1	2.6	13	26.5	0.003
Deteriorated at admission	21	53.8	37	75.5	0.033
Deteriorated at follow-up	13	33.3	30	61.2	0.009

NYHA: New York Heart Association; PH: pulmonary hypertension.