Alan Zajarias Archives - Clinical Tree

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Balloon-Expandable Transcatheter Aortic Valve Replacement Systems

Key Points Balloon aortic valvuloplasty is used to palliate the symptoms of severe aortic stenosis and as a bridge to more definitive therapy when benefit is uncertain. Transcatheter aortic valve replacement (TAVR) provides a survival and symptomatic advantage for patients…

Percutaneous Closure of Patent Foramen Ovale and Atrial Septal Defect

Key Points Although patent foramen ovale (PFO) and atrial septal defect (ASD) both involve an abnormal communication across the interatrial septum, their causes are different. PFO results from lack of fusion between the septum primum and the septum secundum, whereas…

Transcatheter Aortic Valve Replacement: Edwards SAPIEN Valve

Aortic stenosis (AS) remains the most common form of adult acquired valvular heart disease in developed countries, increasing in prevalence with age. As noted by Ross and Braunwald, the natural history of symptomatic AS carries a poor prognosis. Medically treated…