hereditary disease patent ductus venosus https://rarediseases.info.nih.gov/diseases/10483/patent-ductus-venosus https://www.malacards.org/card/patent_ductus_venosus Patent ductus venosus (PDV) is an extremely rare form of congenital portosystemic shunt that results in the diversion of portal blood into the systemic circulation. Failure of DV closure after birth leads to PDV. PDV results in portal venous blood bypassing the liver and directly entering the systemic circulation, decreasing hepatic blood flow and increasing blood volume and toxic substances in the systemic circulation. MESH:C562830 ICD9:747.49 SCTID:253330006 MONDO:0011089 patent ductus venosus PSVS OMIM:601466 UMLS:C0344688 MEDGEN:91033 GARD:0027126 PDV congenital portosystemic shunt