Donner Birgit C, Marschall Christoph, Schmidt Klaus G
Department of Paediatric Cardiology and Pneumology, University Childrens' Hospital, Duesseldorf, Germany.
Cardiol Young. 2012 Jun;22(3):360-3. doi: 10.1017/S1047951111001831. Epub 2011 Nov 9.
A 12-year-old girl presented with a first prolonged syncope. She was successfully resuscitated by external defibrillation after recording torsade de pointes tachycardia. Repeated electrocardiograms and a 12-channel Holter monitoring showed an intermittent prolongation of the QT interval. Genetic analysis identified a heterozygous point mutation in the KCNH2 gene, which is thought to be associated with a rather mild clinical phenotype of the long QT syndrome.
一名12岁女孩首次出现长时间晕厥。记录到尖端扭转型室性心动过速后,通过体外除颤成功复苏。多次心电图检查和12导联动态心电图监测显示QT间期间歇性延长。基因分析确定KCNH2基因存在杂合点突变,该突变被认为与长QT综合征相对较轻的临床表型有关。