disease has feature Arrhythmia intrinsic cardiomyopathy syndromic disease long QT syndrome https://www.malacards.org/card/long_qt_syndrome UMLS:C0023976 ICD10CM:I45.81 ventricular arrhythmia associated with long QT syndrome MESH:D008133 NANDO:2200228 GARD:0027044 A condition that is characterized by episodes of fainting (syncope) and varying degree of ventricular arrhythmia as indicated by the prolonged QT interval. The inherited forms are caused by mutation of genes encoding cardiac ion channel proteins. The two major forms are Romano-Ward syndrome (also known as long QT syndrome 1) and Jervell-Lange Nielsen syndrome. long QT syndrome NANDO:2100053 DOID:2843 NCIT:C34786 MONDO:0002442 ICD9:426.82 MEDGEN:44193 congenital heart disease torsades de pointes