Reversibility of Tachycardiomyopathy After Successful Radiofrequency Catheter Ablation : Intermediate Results

ONGKARN RAUNGRATANAAMPORN,M.D.*, KIERTUAI BHURIPANYO, M.D.*, RUNGROJ KRITTAYAPHONG,M.D.**, CHAN SRIRATANASATHAVORN,M.D.*, SUCHADA RAUNGRATANAAMPORN, MNS (Nursing)**, CHARUW AN KANGKAGATE, MS (Biostat)*, KOONLA WEE NADEMANEE, M.D.***, SUPHACHAI CHAITHIRAPHAN, M.D.*

Affiliation : * Her Majesty Cardiac Centre, ** Division of Cardiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand. ** * Division of Cardiology, Department of Medicine, University of Southern California School of Medicine, Los Angeles, U.S.A.

AbstractLeft ventricular function in patients with tachycardia induced cardiomypopathy can improve after cessation of the arrhythmia. We reported the intermediate results of 10 patients, 6 men and 4 women, with tachycardiomyopathy who successfully underwent radiofrequency catheter ablation (RFCA) for incessant tachycardia. Three had right atrial tachycardia, 5 ventricular tachycardia (2 and 3 from the right and left ventricles, respectively), 1 atrial flutter and 1 right accessory pathway. During the mean follow-up period of 19 months (range 11-38 months), one patient, right atrial tachycardia, had recurrence and reablation was successfully done without recurrence.
Left ventricular ejection fraction, endsystolic and diastolic diameters from echocardio graphy gradually improved from 35 per cent, 51 and 61 mm to 58 per cent, 36 and 52 mm, respectively (p

Keywords : Tachycardia, Cardiomyopathy, Ablation

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