Marc R. Moon

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The bicuspid aortic valve affects 1 to 2% of the population and may be complicated by aortic stenosis or aortic insufficiency and infective endocarditis. The bicuspid aortic valve is associated with abnormalities of the aortic wall such as coarctation of the aorta, aortic dissection, and aortic aneurysm. Most patients with a bicuspid aortic valve will(More)
BACKGROUND It remains unknown whether there is any important clinical advantage to the use of either a bioprosthetic or mechanical valve for patients with native or prosthetic valve endocarditis. METHODS Between 1964 and 1995, 306 patients underwent valve replacement for left-sided native (209 patients) or prosthetic (97 patients) valve endocarditis.(More)
BACKGROUND Excellent outcomes after aortic valve replacement (AVR) in elderly patients can be achieved, yet some practitioners are reticent to refer elderly patients for surgery. This study analyzed risk factors for mortality in patients aged 80 years and older undergoing AVR with or without concomitant coronary artery bypass grafting (CABG). METHODS A(More)
BACKGROUND The purpose of this study was to identify patient subgroups in which prosthesis-patient mismatch most influenced late survival. METHODS Over a 12-year period, 1,400 consecutive patients underwent bioprosthetic (933 patients) or mechanical (467) aortic valve replacement. Prosthesis-patient mismatch was defined as prosthetic effective orifice(More)
BACKGROUND The surgical treatment of mitral valve regurgitation (MR) at the time of aortic valve replacement (AVR) remains controversial. The purpose of this study was to evaluate the change in severity of MR following isolated AVR, and to determine survival benefit. METHODS Between 1991 and 2001, 250 patients underwent isolated AVR; 196 patients had(More)
OBJECTIVES The Cox maze III procedure achieved high cure rates and became the surgical gold standard for the treatment of atrial fibrillation. Because of its invasiveness, a more simplified ablation-assisted procedure, the Cox maze IV procedure, has been performed at our institution since January 2002. The study examined multiple preoperative and(More)
PURPOSE To review our experience with the use of percutaneous methods to manage the ischemic complications of type-B aortic dissection. MATERIALS AND METHODS Retrospective review of our interventional radiology database identified 11 patients with acute type-B aortic dissection who underwent 13 endovascular procedures to attempt revascularization of 23(More)
BACKGROUND Increased mortality in patients with chronic pulmonary hypertension has been associated with elevated right atrial (RA) pressure. However, little is known about the effects of chronic right ventricular (RV) pressure overload on RA and RV dynamics or the adaptive response of the right atrium to maintain RV filling. METHODS AND RESULTS In 7 dogs,(More)
BACKGROUND The purpose of this study was to compare operative mortality and midterm outcome of patients with ischemic mitral regurgitation (MR) undergoing either coronary artery bypass grafting (CABG) alone or CABG with mitral valve (MV) repair. METHODS From 1996 to 2001, 51 consecutive patients underwent CABG with MV repair for ischemic MR. All patients(More)
BACKGROUND A successful left ventricular assist device (LVAD) long-term support in an outpatient setting demands that device-related complications are reduced to a minimum. We hypothesized that late onset driveline infections have serious implications on the anticipated application of LVAD as permanent therapy. METHODS Between 1996 and 2005, 73 patients(More)