Strategies for phrenic nerve preservation during ablation of inappropriate sinus tachycardia

摘要: Background Radiofrequency (RF) ablation can alleviate drug-refractory inappropriate sinus tachycardia (IST). However, phrenic nerve (PN) injury and other complications limit its use. Objective The purpose of this study was to characterize the maneuvers used avoid PN long-term clinical outcomes. Methods consisted a retrospective analysis consecutive patients who underwent for IST. Results RF performed on 13 female with Eleven exhibited capture at desired sites. In 1 patient, not continuous throughout respiratory cycle ventilation holding sufficed injury. 10 patients, pericardial access (PA) balloon insertion required. Initially (n = 4) posterior PA used, which replaced by an anterior in subsequent 6 cases. optimal positioning time significantly lower vs (16.3 ± minutes 58 21.3 minutes, P .01), as fluoroscopy (15.66 16.72 min 35.9 1.8 min, .03). successfully reduced rate Conclusion Ventilation and/or are frequently warranted IST ablation. Anterior appears facilitate procedure over PA.