Abstract 143

Age at index ablation (years) and sexSurgical procedures pre-RFA (date)Location of circuitsPost-RFA proceduresFollow-up (duration) and outcome
38F1. Correction (1970)1. Typical AFlutter (macro) 2. & 3. Crista terminalis AT (focal) 4. Septal His AT (focal)PVR + RA Maze procedure (2/01). AAIR pacemaker (3/06) – atrial standstill + junctional escape rhythm (30 bpm)2 × ATs post-PVR. 1 × AFlutter post pacemaker (metoprolol) but symptomatically improved. FAILURE (14 months)
22M1. Correction (1985)1. IVC septum AT (focal) 2. Coronary sinus os floor AT (focal)PVR + RA microwave ablation (2/04)Recurrent AT post-RFA. No arrhythmia post-PVR (amiodarone). Partial success (31 months)
37M1. Brock (1967) 2. Correction (1971)1. Typical AFlutter (macro) 2. High right atrium/RAA AT (micro) 3. Crista terminalis AT (micro)NilRecurrence of AT post-RFA (suppressed with amiodarone). Partial success (29 months)
37F1. Correction (1975) 2. TVR (1981) 3. Redo TVR (2001)1. Typical AFlutter (macro) 2. Tricuspid valve annulus AT (focal) 3. Multiple non-sustained ATsDDDRP pacemaker (6/05) – sinus node disease. AV node RFA (10/05)Recurrence of AT post-RFA. Fewer palpitations post-pacemaker (no antiarrhythmic therapy). Partial success (lost to follow-up)
39M1. Brock (1968) 2. Correction (1971) 3. Cryosurgery for VT (1992) 4. PVR + RA microwave ablation (8/04)1. Cranial crista terminalis AT (micro)NilIncessant AT post-PVR. No arrhythmia post-RFA (no antiarrhythmic therapy). Complete success (26 months)
43F1. Correction (1969) - post op CHB (paced)1. Posterior IVC AT (focal) 2. Coronary sinus os floor AT (focal) 3. Incisional AT (RAA–base of RA–IVC) (macro)Pacemaker upgrade to DDDRP (12/05)AT post-RFA and post-DDDRP upgrade (suppressed with metoprolol + flecainide). Partial success (1 month)
46F1. Pott’s anastomosis (1955) 2. Brock (1967) 3. Correction (1976)1. Typical AFlutter (macro) 2. Low lateral right AT (focal) 3. Crista terminalis AT (focal) 4. Coronary sinus os AT (focal)RVOT conduit replacement, TVR, debulking of RV + cryoablation (10/02)AT recurred post-RFA (3/02) – asymptomatic. New onset AF 45 months post-surgery (7/06) (started on sotalol). Failure (45 months)
27F1. Brock (1973) 2. Correction (1975) 3. Replacement of RVOT conduit (1986)1. Typical AFlutter (macro) 2. Low crista terminalis AT (focal) 3. Mitral valve annulus AT (focal)DDDRP pacemaker (5/04) – sinus node diseaseRecurrence of AT post-RFA + new paroxysmal AF. No arrhythmia post-pacemaker (atenolol + verapamil). Partial success (28 months)
44F1. Correction (1971)1. Typical AFlutter (macro)DDDRP pacemaker (7/05) – sinus & AV node disease. PVR + cryoablation RVOT (9/05)No arrhythmia post-RFA (metoprolol). Complete success (14 months)
42M1. Correction (1968)1. Typical AFlutter (macro) 2. Crista terminalis AT (macro) 3. Septal AT (macro) 4. RAA AT (focal)NilNo arrhythmia post-RFA (metoprolol). Complete success (19 months)