26 January 2023 January 2023 PVRI Community Call with Daphne Moutsoglou In this Community Call, we discussed: Validity of echocardiographic tricuspid regurgitation gradient to screen for new definition of pulmonary hypertensionPulmonary Arterial Hypertension Patients Have a Proinflammatory Gut Microbiome and Altered Circulating Microbial Metabolites Community Calls