PMC5152991_01
Internal electrocardiogram retrieved from ICD memory showing one of the TdP episodes. Report of the number of the TdP and VF episodes.
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Within 1 day preceding the indexed admission, numerous high-energy therapies for ventricular tachycardias were recorded in the memory of the ICD VR (202 adequate therapies, including 149 high-energy therapies) (Figure 1).
ECG on admission. LBBB with broadening of the QRS complex to 160 ms. Elongated corrected QT interval (Bazett's formula) to 0,61 s.
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The ECG showed prolonged corrected QT interval of 0,61 s (Bazett's formula) with a LBBB and widened QRS complex of 160 ms (Figure 2).
Follow-up ECG. Narrowed QRS complexes to 120 ms and shortened corrected QT interval to 480 ms.
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III to class I and remained stable in time during next 12 months. In ECGs, a narrowing of QRS complexes to 120 ms was seen (Figure 3).
Follow-up ECG. Noticeable ventricular arrhythmia (ventricular pairs) just after switching-off of resynchronizing pacing.
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