Cardiovascular magnetic resonance‐assessed fast global longitudinal strain parameters add diagnostic and prognostic insights in right ventricular volume and pressure loading disease conditions

Table 4 Clinical characteristics in PAH with low, intermediate and high risks

Variables	Low risk (n = 28)	Intermediate risk (n = 34)	High risk (n = 13)
WHO class (> 1), n (%)	25 (89 %)	31 (91 %)	13 (100 %)
6MWD, m	461 ± 68	403 ± 97*	344 ± 103*
NT-proBNP, pg/ml	140 (60, 308)	605 (223, 1820)*	3475 (1678, 7344)*^#
Maximal RA area, cm²	17 ± 6	24 ± 7*	42 ± 17*^#
RA pressure, mmHg	5.8 ± 2.8	6.1 ± 3.6	16.8 ± 8.4*^#
Cardiac index, l/min/m²	3.6 ± 2.7	2.5 ± 1.0*	2.1 ± 0.6*
RVEF, %	50 ± 10	39 ± 13*	32 ± 11*

Data are presented as mean ± SD, median (IQR) or n (%)
6MWD six-minute walking distance, EF ejection fraction, NT-proBNP N-terminal pro-brain natriuretic peptide, RA right atrial, RV right ventricular, WHO World Health Organization
*Significant difference compared to low risk; ^#significant difference compared to intermediate risk

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