A rare autosomal dominant form of heart-hand syndrome, first described in members of a Slovenian family, that is characterized by adult onset, progressive cardiac conduction disease, tachyarrhythmias that can lead to sudden death, dilated cardiomyopathy and brachydactyly, with the hands less severely affected than the feet. Muscle weakness and/or myopathic electromyographic findings have been observed in some cases. The disease is MONDO_0012417 (heart-hand syndrome, Slovenian type). Also known as: Cardiac conduction disease-dilated cardiomyopathy-brachydactyly syndrome, atriodigital dysplasia, Slovenian type.