Journal of the Medical Association of Thailand Vol 80, No 7:JULY 1997 0125-2208 80 7 1997 Jul Radiofrequency Catheter Ablation in Type I Atrial Flutter : Preliminary Experience of 10 Cases 466 EN Ongkam Raungratanaamporn Kiertijai Bhuripanyo Rungroj Krittayaphong Somkiat Aroonpruksakul Patipam Toomtong Suphachai Chaithiraphan Original Article