Abstract
Between October 1986 and January 1989, 73 percutaneous catheter balloon aortic valvuloplasty procedures were performed in 68 adult patients (32 men and 36 women; mean age, 77 ± 9 years) with severe symptomatic aortic stenosis. Following the procedures, significant improvements were documented in aortic valve area, mean transvalvular pressure gradient, peak-to-peak pressure gradient, left ventricular systolic pressure, radionuclide ejection fraction, and left ventricular end-systolic volume index.
There were no procedure-related deaths, but 2 patients (3%) required emergency surgery for acute aortic regurgitation. During hospitalization, 4 patients had persistent symptoms (3 died; 1 subsequently underwent repeat valvuloplasty and later, valve replacement). Short-term clinical improvement was noted in 59 of 65 patients (91%).
During the follow-up period (mean, 11.6 ± 8.4 months), 22 patients died (including the 3 who died during hospitalization). Sixteen underwent aortic valve replacement (including the 2 who underwent emergency aortic valve replacement); all 16 are alive. A total of 6 patients (1 with an initial balloon aortic valvuloplasty at an outside institution) underwent repeat valvuloplasty; of those, 4 subsequently underwent aortic valve replacement, and 2 died. Of the remaining 30 patients, 27 continue to experience relief of symptoms, and 3 have clinical symptoms that have not improved or have worsened since the valvuloplasty procedure.
Multivariate predictors of clinical outcome (p<0.05) included post-valvuloplasty aortic valve area, pre- and post-valvuloplasty ejection fraction, absence of coronary artery disease, and absolute change in valve area. Overall actuarial and event-free survivals were 83% and 49%, respectively, at 1 year.
Although clinical improvement is frequently noted after balloon aortic valvuloplasty, the procedure is associated with a high recurrence of symptoms and restenosis. Balloon aortic valvuloplasty is at best a palliative procedure; when feasible, surgical valve replacement is the more definitive therapy. (Texas Heart Institute Journal 1990;17:23-30)
Keywords: Aortic stenosis
Keywords: aortic valve replacement
Keywords: balloon aortic valvuloplasty
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Selected References
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