nitinol and Chest-Pain

An anomalous systemic artery originating from the descending thoracic aorta supplying the normal basal segments of the lower lobe of the left lung without sequestration is a rare congenital anomaly. The published surgical treatments include lobectomy, segmentectomy, anastomosis, and ligation. In addition, endovascular treatment with coils has been reported. A second-generation occluder, the Amplatzer Vascular Plug II (AVP II), has a central plug and two occlusion disks and a finer, more densely woven nitinol wire, thus enabling faster embolization. This published case is the first successful occlusion of an aneurysm of an anomalous systemic artery with the AVP II and fibered coils, with 10 months of follow-up.

Topics: Alloys; Aneurysm; Angiography; Aorta, Thoracic; Chest Pain; Embolization, Therapeutic; Equipment Design; Follow-Up Studies; Humans; Lung; Male; Middle Aged; Pulmonary Artery; Pulmonary Embolism; Septal Occluder Device; Tomography, Spiral Computed; Treatment Outcome

Esophageal stenting is a popular form of treatment of esophageal strictures in adults but is not widely used in children. The aim of the current study was to investigate whether esophageal stents could be used safely and effectively in the treatment of esophageal stenosis in children.. Covered retrievable expandable nitinol stents were placed in 8 children with corrosive esophageal stenosis. The stents were removed 1 to 4 weeks after insertion.. The stents were placed in all patients without complications and were later removed successfully. After stent placement, all patients could take solid food without dysphagia. Stent migration occurred in one patient and so the insertion procedure was repeated to reposition the stent. During the 3-month follow-up period after stent removal, all children could eat satisfactorily. After 6 months, 2 children required balloon dilation (3 times in one and 5 times in the other). The dysphagia score improved in all patients.. The use of the covered retrievable expandable stent is an effective and safe method in treating childhood corrosive esophageal stenosis.

Topics: Alloys; Burns, Chemical; Catheterization; Caustics; Chest Pain; Child; Child, Preschool; Conscious Sedation; Deglutition Disorders; Device Removal; Esophageal Stenosis; Female; Fluoroscopy; Follow-Up Studies; Foreign-Body Migration; Humans; Hydrochloric Acid; Hydrogen Peroxide; Male; Pliability; Radiography, Interventional; Severity of Illness Index; Sodium Hydroxide; Stents; Sulfuric Acids; Temperature; Treatment Outcome; Vomiting