NPPB and pulmonary arterial hypertension: Additionally, there was also no significant difference for NT-proBNP between patients with pre-tricuspid shunts (1868 ± 1875 ng/L), other shunt lesions (1219 ± 2430 ng/L), and PAH-CHD associated with complex CHD (1618 ± 1955 ng/L, p = 0.091).