Type A4 Truncus Arteriosus with Quadricuspid truncal valve (QTV): A rare cause of infantile heart failureDr Sudipta Mondal1, Dr Deepa S Kumar2MD, Senior Resident, Dept. of cardiology, SCTIMST (Sree Chitra Tirunal Institute for Medical Science and Technology)MD, DM Cardiology, Additional professor, Dept. of cardiology, SCTIMSTKeywords: Quadricuspid truncal valve; QTV; Type A4 Truncus; Ductal arch; Truncus ArteriosusWord count: 834Patient consent for publication: Obtained.Conflicts of Interest: NoneData Availability Statement: No new data were generated or analysed in support of this research.Funding: NoneEthical approval statement: Not applicablePermission to reproduce material from other sources : Not applicableClinical trial registration: Not applicable