Jervell

Jervell is a Norwegian surname. In medical literature, the name is best known through Nils Jervell, a Norwegian physician who, together with Erik Lange-Nielsen, first described a congenital long QT syndrome associated with sensorineural deafness in 1957. The combined eponym Jervell and Lange-Nielsen syndrome (JLNS) remains the standard name for this condition.

JLNS is a rare autosomal recessive disorder characterized by a prolonged QT interval on electrocardiography and congenital bilateral sensorineural deafness. It is caused by biallelic mutations in the KCNQ1 or KCNE1 genes, which encode subunits of cardiac potassium channels that regulate the heart’s electrical repolarization. Diagnosis relies on clinical features, ECG findings, and genetic testing. Management focuses on preventing arrhythmias and sudden cardiac death, often through beta-blocker therapy, avoidance of QT-prolonging drugs, and, in select cases, pacemaker or implantable cardioverter-defibrillator therapy. Early detection and family genetic counseling are important due to the inherited nature of JLNS.

Beyond the medical eponym, Jervell is a surname of Norwegian origin and is relatively uncommon outside Scandinavian contexts. The name is primarily recognized in connection with JLNS within medical literature rather than as a widely represented biographical surname.

Related term: Jervell and Lange-Nielsen syndrome.