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JAMA. 2010 Jan 27;303(4):333-40. doi: 10.1001/jama.2009.2029.

Comparison of antiarrhythmic drug therapy and radiofrequency catheter ablation in patients with paroxysmal atrial fibrillation: a randomized controlled trial.

Collaborators (186)

Wilber D, Akar J, Santucci P, Schneck M, Finn C, Pappone C, Augello G, Sala S, Neuzil P, Reddy V, Coling L, Kanova M, Kralovec S, Kruger A, Kupec J, Petru J, Sediva L, Sidova M, Skoda J, Taborsky M, de Paola A, Brito Rde J, da Costa PA, Dalegrave C, Dietrich C, Ferro CR, Hernandes V, Horbach SJ, Marchlinski F, Bala R, Cooper J, Dixit S, Garcia F, Gerstenfeld E, Gnap M, Hsia H, Killian T, Lin D, Russo A, Schott G, Verdino R, Zado E, Natale A, Wazni O, Bhargava M, Arruda M, Burkhardt JD, Chung M, Cross J, Dressing T, Elliott K, Fariello C, Castle LW, Cummings JE, Holmes D, Jaeger FJ Jr, Jarosz M, Kanj M, Koepp S, Martin DO, Marrouche N, Mays J, Pryce J, Rozich R, Saliba W, Schweikert R, Sullivan JM, Sweeney DK, Semenec T, Spencer S, Tchou PJ, Wilkoff B, Macle L, Badra M, Barrero M, Bertrand G, Brugada R, Creo H, David D, Demoniere F, Dubuc M, Dumont F, Gagne P, Guerra P, Katsouras G, Khairy P, Lemola K, Mansour R, Proietti A, Rivard L, Roux JF, Roy D, Sylvain L, Talajic M, Thibault B, Daoud E, Augostini R, Chumita R, Dawson G, Hummel J, Kalbfleisch S, Daoud E, Augostini R, Bremer J, Chumita R, Dawson G, Crow K, Hummel J, Kalbfleisch S, Ryan J, Weiss R, Calkins H, Avara K, Berger R, Hawes C, Henrickson C, Marine J, Robinson E, Robinson G, Stack J, Hall B, Daubert J, Huang D, Patterson C, Pyykkonen K, Rosero S, Schrack J, Yeager C, Deville B, Weaver T, Williams D, Worley T, Hao S, Bartek L, Beheiry S, Bernier E, Carnam J, Hongo R, Im G, Voskyul J, Watanabe D, Weiss R, Swarup V, Arroyo N, Bahu M, Bodner G, Cataldo R, Ellingson N, Khanna P, Krebsbach A, Mattioni T, Ning A, Riggio D, Scrivano S, Tendler D, Williams C, Vandermate B, Fausett L, Steinberg J, Arshad A, Cotiga D, Ehlert F, Knox R, Pierce W, Friehling T, Bell MH, Blake M, Doctor A, Durrani SA, Del Negro AA, Strouse DA, Wish MH, Pollack S, Goodwin L, Harrison S, Monir G, Stastny C, John RM, Byrne JM, Hook BG, Martin DT, Michaud GF, Parrella FM, Wharton M, Clarke E, Schultz M.

Author information

1
Cardiovascular Institute, Department of Medicine, Loyola University Medical Center, 2160 S First Ave, Bldg 110, Room 6232, Maywood, IL 60153, USA. dwilber@lumc.edu

Abstract

CONTEXT:

Antiarrhythmic drugs are commonly used for prevention of recurrent atrial fibrillation (AF) despite inconsistent efficacy and frequent adverse effects. Catheter ablation has been proposed as an alternative treatment for paroxysmal AF.

OBJECTIVE:

To determine the efficacy of catheter ablation compared with antiarrhythmic drug therapy (ADT) in treating symptomatic paroxysmal AF.

DESIGN, SETTING, AND PARTICIPANTS:

A prospective, multicenter, randomized (2:1), unblinded, Bayesian-designed study conducted at 19 hospitals of 167 patients who did not respond to at least 1 antiarrhythmic drug and who experienced at least 3 AF episodes within 6 months before randomization. Enrollment occurred between October 25, 2004, and October 11, 2007, with the last follow-up on January 19, 2009.

INTERVENTION:

Catheter ablation (n = 106) or ADT (n = 61), with assessment for effectiveness in a comparable 9-month follow-up period.

MAIN OUTCOME MEASURES:

Time to protocol-defined treatment failure. The proportion of patients who experienced major treatment-related adverse events within 30 days of catheter ablation or ADT was also reported.

RESULTS:

At the end of the 9-month effectiveness evaluation period, 66% of patients in the catheter ablation group remained free from protocol-defined treatment failure compared with 16% of patients treated with ADT. The hazard ratio of catheter ablation to ADT was 0.30 (95% confidence interval, 0.19-0.47; P < .001). Major 30-day treatment-related adverse events occurred in 5 of 57 patients (8.8%) treated with ADT and 5 of 103 patients (4.9%) treated with catheter ablation. Mean quality of life scores improved significantly in patients treated by catheter ablation compared with ADT at 3 months; improvement was maintained during the course of the study.

CONCLUSION:

Among patients with paroxysmal AF who had not responded to at least 1 antiarrhythmic drug, the use of catheter ablation compared with ADT resulted in a longer time to treatment failure during the 9-month follow-up period.

TRIAL REGISTRATION:

clinicaltrials.gov Identifier: NCT00116428.

PMID:
20103757
DOI:
10.1001/jama.2009.2029
[Indexed for MEDLINE]

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