Successful endoscopic clipping management of a left atrioesophageal fistula after atrial fibrillation catheter ablation: A case report of a young male patient.

Atrioesophageal fistula (AEF) is a rare and serious complication of atrial fibrillation (AF) ablation, forming a connection between the atrium and esophagus. A systematic treatment approach for AEF has not been established to date. Herein, we report the case of a young male patient with left AEF after AF catheter ablation, which was successfully treated with the Over-the-Scope Clip (Ovesco Endoscopy AG, Tübingen, Germany) and conservative management. Despite having a double-orifice mitral valve and tricuspid valve, the patient had no symptoms or valve disease. The patient was readmitted three weeks after the procedure owing to fever, hematemesis, consciousness disturbance, hemiplegia, and systemic convulsions. Indigenous bacteria in the oral cavity were detected in blood culture. Magnetic resonance imaging of the brain showed multiple cerebral infarctions. Chest computed tomography showed mediastinal air, suggesting an AEF diagnosis. Subsequently, an endoscopic closure using the Over-the-Scope Clip was performed, leading to a successful recovery and patient discharge on day 87 after admission. This is the first case report of a successful management of AEF after radiofrequency ablation using the Over-the-Scope Clip system. Although surgery is the main treatment for AEFs, we performed nonsurgical management using the clip, demonstrating a potential treatment option for AEF. Learning objective: Surgical intervention is usually superior to endoscopic intervention and conservative management for treatment of atrioesophageal fistula. To the best of our knowledge, this is the first case to be successfully managed by endoscopic clipping and conservative management.

Over 10 years clinical outcomes in patients with mitral stenosis with unilateral commissural calcification treated with catheter balloon commissurotomy: single-center experience.

OBJECTIVES: Treatment of mitral valve stenosis with catheter balloon commissurotomy (CBC) yields acceptable immediate results even when one commissure shows calcification. However, the long-term outcomes in such cases remain unclear. METHODS: We examined the immediate and long-term (mean: 11+/-5 years) outcomes of 57 patients who underwent 58 CBC procedures. Patients were classified into group A (no commissural calcification, n=44) or group B (unilateral commissural calcification, n=13). From the appearance of the mitral valve just after CBC, commissurotomy was judged to be bilateral, incomplete, or excessive. End points were death, recurrence of congestive heart failure necessitating hospitalization, embolism, repeat CBC, or mitral valve replacement. RESULTS: There were significant numbers of unfavorable mitral valve morphologies evaluated according to Sellors classification, estimated by echocardiograms; Sellors class I: 20 patients in group A vs. none in group B (p<0.05). Class II: 24 in group A vs. 10 in group B. and class III: none in group A vs. 3 in group B (p<0.05). CBC increased the mitral valve area (Gorin formula) from 1.3+/-0.3 to 2.1+/-0.5 cm2 in patients in group A and from 1.1+/-0.2 to 1.8+/-0.4 cm2 in those in group B (p=n.s.). Among the latter, there were significantly more excessive commissurotomies than in group A and no bilateral commissurotomy. The overall or event-free survival rate during the follow-up of group B showed a lower tendency than in group A (overall: group A: 86.2% vs. group B: 84.6%, p, n.s. event-free: 56.8% vs. 46.2%, respectively, p=n.s.). Univariate predictors of all events in group B included post-CBC pulmonary arterial pressure, and the pattern of commissurotomy after CBC (p<0.05). Excessive commissurotomy increased clinical events some years later, after the procedure. CONCLUSIONS: In this study, involving a small number of subjects, long-term outcomes of patients with unilateral commissural calcification receiving CBC showed no significant difference as compared to those with commissural calcification absence. However, it is necessary to perform careful follow-up of CBC patients with unilateral commissural calcium.

Prospective randomized trial comparing a nitinol self-expanding coronary stent with low-pressure dilatation and a high-pressure balloon expandable bare metal stent.

The recent SCORES trial demonstrated that lower dilatation pressures seen with self-expanding (SE) stents may be associated with lower rates of target lesion revascularization (TLR). To determine whether SE stents with low-pressure dilatation are as safe and effective as balloon expandable (BE) stents. We randomly assigned 254 patients with 279 coronary lesions to groups receiving either SE with low-pressure dilatation <12 atm (n = 143) or conventional BE stents (n = 136). Thereafter, acute results and long-term outcomes were compared. Baseline patient and angiographic characteristics were similar in two groups. The incidence of procedural complications, such as slow flow, side branch occlusion, and edge dissection were significantly lower in the SE group than in the BE group (overall: SE, 17; BE, 35; P < 0.01), and the occurrence of myocardial infarction tended to be lower in SE than in BE (SE, 1; BE, 4; not significant). Although acute gain was significantly smaller with SE than BE (SE, 2.21 +/- 0.65 mm; BE, 2.42 +/- 0.62; P < 0.01), probably due to gradual expansion of the SE stent, nearly identical minimum luminal diameters on follow-up angiography (SE, 2.14 +/- 0.92 mm vs. BE, 2.22 +/- 0.93; not significant) and similar angiographic restenosis (SE, 18.1% vs. BE, 20.5%). and TLR rates (SE, 16.1% vs. BE, 14.0%) were apparent. This prospective randomized trial demonstrates that SE stents with low-pressure dilatation is safe and effective strategy for treating coronary arterial stenosis.