Table 2.
Categories (documented by discharge summaries, medical records or ECG) | No. (%) | Prolonged QTc documented in records | QTc measured on ECG |
---|---|---|---|
Possible TdP/LQTS*– all | 40 | 28 (70%) | 24 (60%) |
Polymorphic ventricular tachycardia or fibrillation (PVT)† | 19 | 11 (58%) | 9 (47%) |
Possible torsades is syncope plus either premature ventricular contraction or PVT plus LQT.
Documented in medical records or on ECG recording.