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A 65-year-old man with ischaemic cardiomyopathy (EF 23%), NYHA class II–III heart failure symptoms and ECG showing LBBB with QRS duration of 150 ms underwent implantation of a Cardiac Resynchronisation Therapy Defibrillator (CRTD). The procedure was uneventful, and the pacing threshold and R wave amplitude during testing of the active dual coil lead were satisfactory.
Figure 1 showed a PA fluoroscopic image (1A), 12-lead ECG recorded during pacing from the defibrillator lead (1B), and injury current recording from the pacing system analyser (1C). Where is …
Contributors The corresponding author wrote the manuscript with the assistance of the other authors.
Competing interests None.
Patient consent Obtained.
Provenance and peer review Not commissioned; internally peer reviewed.