A modified risk score in one-year survival rate assessment of group 1 pulmonary arterial hypertension

BMC Pulmonary Medicine

Table 1 The modified risk assessment score of PAH

Determinants of prognosis	Score 0	Score 1	Score 2
WHO functional class	I, II	III	IV
6MWD	> 440 m	165-440 m	< 165 m
NT-proBNP	NT-proBNP < 300 ng/l	NT-proBNP 300–1400 ng/L	NT-proBNP > 1400 ng/L
Echocardiography	RA area < 18 cm²	RA area 18–26 cm²	RA area > 26 cm²
Total score	0–2 → Low-risk stratum → One-year survival rate 95–100%
	3–5 → Intermediate-risk stratum→One-year survival rate 90–95%
	6–8 → High-risk stratum→One-year survival rate < 90%

PAH pulmonary arterial hypertension, WHO world health organization, 6MWD 6-min walking distance, BNP brain natriuretic peptide, RA right atrial

ISSN: 1471-2466