{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,26]],"date-time":"2026-07-26T02:38:32Z","timestamp":1785033512339,"version":"3.55.0"},"reference-count":24,"publisher":"Hindawi Limited","license":[{"start":{"date-parts":[[2016,1,1]],"date-time":"2016-01-01T00:00:00Z","timestamp":1451606400000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["BioMed Research International"],"published-print":{"date-parts":[[2016]]},"abstract":"<jats:p><jats:italic>Background<\/jats:italic>. There are little comparative data on catheter ablation of paroxysmal atrial fibrillation (AF) using the contact force radiofrequency (CF-RF) catheter versus the second-generation cryoballoon (CB2).<jats:italic>Methods and results<\/jats:italic>. This is a single center, retrospective, nonrandomized study of 98 patients with symptomatic, drug-refractory paroxysmal AF who underwent their first PVI ablation using either the CB2 (<mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M1\"><mml:mi>n<\/mml:mi><mml:mo>=<\/mml:mo><mml:mn fontstyle=\"italic\">40<\/mml:mn><\/mml:math>) or CF-RF (<mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M2\"><mml:mi>n<\/mml:mi><mml:mo>=<\/mml:mo><mml:mn fontstyle=\"italic\">58<\/mml:mn><\/mml:math>). The mean age was 60 years with 63% men, a mean LA size of 42\u2009mm. The procedure duration (<mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M3\"><mml:mn fontstyle=\"italic\">74<\/mml:mn><mml:mo>\u00b1<\/mml:mo><mml:mn fontstyle=\"italic\">17<\/mml:mn><\/mml:math>versus<mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M4\"><mml:mn fontstyle=\"italic\">120<\/mml:mn><mml:mo>\u00b1<\/mml:mo><mml:mn fontstyle=\"italic\">49<\/mml:mn><\/mml:math>minutes<mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M5\"><mml:mi>p<\/mml:mi><mml:mo>&lt;<\/mml:mo><mml:mn fontstyle=\"italic\">0.05<\/mml:mn><\/mml:math>) was shorter for CB2 group; the fluoroscopy time (<mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M6\"><mml:mn fontstyle=\"italic\">14<\/mml:mn><mml:mo>\u00b1<\/mml:mo><mml:mn fontstyle=\"italic\">17<\/mml:mn><\/mml:math>versus<mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M7\"><mml:mn fontstyle=\"italic\">16<\/mml:mn><mml:mo>\u00b1<\/mml:mo><mml:mn fontstyle=\"italic\">5<\/mml:mn><\/mml:math>minutes,<mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M8\"><mml:mi>p<\/mml:mi><mml:mo>=<\/mml:mo><mml:mn fontstyle=\"italic\">0.45<\/mml:mn><\/mml:math>) was similar. Complete PVI was achieved in 96% of patients with RF-CF and 98% with CB2. Phrenic nerve palsies (2 transient and 1 persistent) occurred exclusively in the CB2 group and 1 severe, nonlethal complication (pericardial tamponade) occurred in the CF-RF group. At 24-month follow-up, the success rate, defined as freedom from AF\/atrial tachycardia (AT) after a single procedure without antiarrhythmic drug, was comparable in CF-RF group and CB2 group (65.5% versus 67%, resp., log rank<mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M9\"><mml:mi>p<\/mml:mi><mml:mo>=<\/mml:mo><mml:mn fontstyle=\"italic\">0.54<\/mml:mn><\/mml:math>).<jats:italic>Conclusion<\/jats:italic>. Both the CB2 and the RF-CF ablation appeared safe; the success rate at 2 years was comparable between both technologies.<\/jats:p>","DOI":"10.1155\/2016\/6495753","type":"journal-article","created":{"date-parts":[[2016,5,23]],"date-time":"2016-05-23T17:14:17Z","timestamp":1464023657000},"page":"1-6","source":"Crossref","is-referenced-by-count":19,"title":["Two-Year Follow-Up after Contact Force Sensing Radiofrequency Catheter and Second-Generation Cryoballoon Ablation for Paroxysmal Atrial Fibrillation: A Comparative Single Centre Study"],"prefix":"10.1155","volume":"2016","author":[{"given":"Attila","family":"Kardos","sequence":"first","affiliation":[{"name":"Department of Cardiac Electrophysiology, Gottsegen Gyorgy National Institute of Cardiology, Haller Street 29, Budapest 1096, Hungary"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zsuzsanna","family":"Kis","sequence":"additional","affiliation":[{"name":"Department of Clinical Electrophysiology, Erasmus Medical 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