Balloon Mitral valvuloplasty
is a viable alternative for patients with non-calcific mitral stenosis
and is equivalent to closed mitral commisurotomy (a more invasive surgical
procedure. Patients with certain mitral valve characteristics are not
candidates for this procedures and should undergo mitral valve replacement
instead. Unlike mitral valvuloplasty, balloon aortic valvuloplaty is only
indicated in patients with severe aortic stenosis who are not candidates
for aortic valve replacement (due to age, co-morbid condition, )
and is only a palliative procedure or can be performed as a bridge to
valve surgery in critically ill patients. Both procedures are performed
percuatneouly by positioning a balloon across the valve and inflating
it to dilate the valve architecture. The Beth Israel Deaconess Medical
Center offers both procedures and has pioneered the use of these procedures.
Mitral stenosis is a disabling and eventually lethal
disease. If untreated, significant symptoms (eg, dyspnea and fatigue) and serious
complications (eg, pulmonary edema, systemic arterial embolism, and pulmonary
hypertension) occur. Medical therapy can relieve symptoms but do not affect
the obstruction to flow. Surgical commissurotomy and open valvuloplasty were,
for many years, the only methods by which mitral stenosis could be corrected,
However, the development of percutaneous balloon valvuloplasty has revolutionized
the treatment of this disorder and largely replaced surgery for mitral stenosis.
A balloon is advanced from the venous circulation to the right atrium, across
the interatrial septum to the left atrium, and across the stenotic mitral valve.
Inflation and rapid deflation of the balloon opens the stenotic valve.