Canadian Respiratory Journal

Research Article

Transition from Ambrisentan to Bosentan in Pulmonary Arterial Hypertension: A Single-Center Prospective Study

Table 5

Baseline and follow-up data of pericardial effusion and WHO FC.
 Baseline1 year2 year
BosentanAmbrisentanBosentanAmbrisentanBosentanAmbrisentan
Pericardial effusion (n)211010
WHO FC (N, 2/3/4)5/2/19/3/05/2/111/1/05/2/111/1/0
WHO FC, World Health Organization function class; n, the number of patients who have pericardial effusion; N, the number of patients of WHO FC II, III, and IV.