Why the study?
What are the spatial characteristics of T wave alternans in patients with idiopathic long QT syndrome as assessed by body surface mapping?
Population
2 patients with idiopathic long QT syndrome
Design
Case_series
Key result
Body surface mapping in two patients with idiopathic long QT syndrome revealed that T wave alternans were related to alternate heterogeneous prolongation of action potential duration in the left frontal chest.
Authors
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Supports hypothesis of regional APD heterogeneity in idiopathic LQTS; leaves open whether body surface mapping aids risk stratification.
Case Report (n=2)
What are the spatial characteristics of T wave alternans in patients with idiopathic long QT syndrome as assessed by body surface mapping?
Body surface mapping demonstrates that T wave alternans in idiopathic long QT syndrome is related to alternate heterogeneous prolongation of the action potential duration in the left frontal chest.
Shimizu et al. (1996) conducted a case report in Idiopathic long QT syndrome (n=2). Body surface mapping was evaluated on T wave alternans morphology and polarity changes. Body surface mapping in two patients with idiopathic long QT syndrome revealed that T wave alternans were related to alternate heterogeneous prolongation of action potential duration in the left frontal chest.