PDE4iphosphodiesterase-4 inhibitor(English)a drug used to block the degradative action of phosphodiesterase 4AAT, ABT, BVR, COPD, CPPS, ETS, ICS, LABA, LVRS, NCC, NIVPulmonologyhttps://doi.org…507/bp.2013.039« PDE3aPDE5 »