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Ablation of haemodynamically unstable right ventricular outflow tract ventricular tachycardia guided by non-contact mapping
  1. J W H Fung,
  2. H C K Chan,
  3. J E Sanderson
  1. jesanderson{at}

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A 60 year old man presented with recurrent near syncope preceded by fast palpitation for six months. Investigations showed normal left and right ventricles. Programmed electrical stimulation (PES) was able to induce clinical arrhythmia of cycle length 250 ms with left bundle branch block pattern and inferior axis, suggesting right ventricular outflow tract (RVOT) ventricular tachycardia (VT). Blood pressure dropped to 60/40 mm Hg during tachycardia with notable dizziness. Overdrive pacing was successful in terminating the arrhythmia. The clinical arrhythmia was …

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