disease has feature Arrhythmia intrinsic cardiomyopathy heart conduction disease syndromic disease long QT syndrome https://github.com/monarch-initiative/mondo/issues/10434 https://www.malacards.org/card/long_qt_syndrome UMLS:C0023976 ICD10CM:I45.81 ventricular arrhythmia associated with long QT syndrome A cardiac rhythm disease characterized by prolongation of the corrected QT (QTc) interval on the surface electrocardiogram, associated with precipitation of torsade de pointes (TdP), a polymorphic ventricular tachycardia that may cause sudden death. It is characterized by episodes of fainting (syncope) and varying degree of ventricular arrhythmia. It may be congenital or, more frequently, acquired. The inherited forms are caused by mutation of genes encoding cardiac ion channel proteins. MESH:D008133 NANDO:2200228 GARD:0027044 long QT syndrome NANDO:2100053 DOID:2843 NCIT:C34786 MONDO:0002442 ICD9:426.82 MEDGEN:44193 congenital heart disease torsades de pointes cardiac rhythm disease