複数医療機器

2009年8月29日土曜日

Radiofrequency Hot Balloon Catheter

循環器医 佐竹先生のホットバルーンによる心房細動患者100名の治療と
その後の経過について、米国循環器学会誌に最近掲載された。
詳しくは専門誌ご参照
One hundred consecutive patients with drug-resistant atrial fibrillation (63
paroxysmal, 37 persistent) were enrolled. The isolation of the PVs was performed by wedging the
balloon at each PV antrum to create circumferential lesions in each case. Contiguous linear lesions
were also created at the roof between the superior PVs and at the bottom of the posterior LA
between the inferior PVs by dragging the balloon along the endocardium. Complete elimination of
the posterior LA and PV potentials was achieved in all 100 cases, confirmed by either conventional
or electro-anatomic mapping system. The total procedure time was 129±26 minutes, inclusive of
29.9±7.3 minutes of fluoroscopy time. Follow-up during 11.0±4.8 months confirmed that 92
patients (60 paroxysmal, 32 persistent) were free from atrial fibrillation without antiarrhythmic
drugs, and in the remaining patients except for 2 with LA tachycardia, sinus rhythm was maintained
with antiarrhythmic drugs. With precautions of esophageal cooling by irrigation dictated by
temperature monitoring and monitoring phrenic nerve pacing, no LA-esophageal fistula or
permanent phrenic nerve injury occurred.

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