Pulmonary arterial hypertension (PAH), a rare, progressive and life-threatening blood vessel disorder, affects some 500 to 1,000 new patients each year in the U.S. FDA recently approved Opsynvi, a first-of-its-kind once-daily single-tablet combination therapy from Johnson & Johnson. “With this approval, our portfolio now includes treatments that address all three guideline-recommended pathways,” said a J&J…