Prolongation of the QT interval and post-extrasystolic augmentation of the TU-wave during emotional stress.
We present a case of a 25-year-old woman with multiple blackouts and no structural heart disease, with abnormal T-U waves and borderline QT interval on her resting electrocardiogram. During emotional stress she developed frequent monomorphic ventricular premature beats, with characteristic changes of the sinus complexes immediately following the premature beats, namely augmentation and greater degree of merging of the T and U waves and QTc interval prolongation. The changes alert about the possibility of congenital long QT syndrome, specifically genotype 2 or 1.
Batchvarov
Velislav N
VN
Division of Cardiac and Vascular Sciences, St. George's University of London, London, United Kingdom. vbatchva@sgul.ac.uk
Bajpai
Abhay
A
Behr
Elijah
E