Clinical and Instrumental Characteristics of Newly Diagnosed Patients with Various Forms of Pulmonary Hypertension according to the Russian National Registry

Table 5

Risk factors in patients with PAH and CTEPH.

Factors	Patient groups
	PAH	IPAH	PAH-CTD	PAH-CHD	PoPH	CTEPH
Association with pregnancy	43 (8.8%)	22 (11.1%)^1,4,5	1 (1.1%)	17 (9.5%)^3,4,5	0 (0%)	6 (2.9%)
Onset connection with acute respiratory infection	43 (8.8%)	28 (14.1%)^1,2	3 (3.3%)	6 (3.4%)	1 (11.1%)	24 (11.7%)
Onset connection with the past stress	43 (32.4%)^4	98 (49.2%)^1,2,4	21 (22.3%)	35 (19.6%)^4	1 (11.1%)	20 (9.7%)
Onset connection with the pulmonary embolism	0 (0%)^4	0 (0%)^4	0 (0%)^4	0 (0%)^4	0 (0%)^4	56 (27.2%)

Note: 1: ; 2: ; 3: ; 4: vs. CTEPH ; 5: vs. .