A nurse is teaching a client who has mitral valve stenosis that has not responded to pharmacological therapies about other treatment options. Which of the following statements should the nurse include in their teaching?

Choice A rationale The description of advancing a catheter to dilate a narrowed or occluded artery refers to percutaneous transluminal coronary angioplasty (PTCA). This procedure is specifically used to treat coronary artery disease by improving blood flow to the myocardium. It does not address the structural mechanical issues of a stenosed mitral valve. Mitral valve stenosis involves a narrowing of the valve orifice itself, requiring a procedure that targets the valvular apparatus rather than the coronary arteries. Choice B rationale Heparin is an anticoagulant used to prevent the formation or extension of blood clots but it is not a primary treatment for the mechanical narrowing found in mitral valve stenosis. While patients with mitral stenosis may receive anticoagulation to prevent systemic emboli if they are in atrial fibrillation, a heparin bolus and infusion will not physically widen the stenotic valve. Pharmacological therapies are indicated here to manage symptoms, whereas the question asks for other mechanical treatment options. Choice C rationale Pentoxifylline is a hemorheologic agent that improves blood flow by decreasing blood viscosity and increasing erythrocyte flexibility. It is primarily used to treat intermittent claudication in peripheral vascular disease. It does not have a role in the mechanical dilation of a stenosed mitral valve. It acts on the properties of the blood cells rather than the valvular tissue. Thus, it is an inappropriate teaching point for a client seeking non-pharmacological treatment for mitral valve stenosis. Choice D rationale This statement accurately describes a percutaneous balloon valvuloplasty. In this procedure, a balloon-tipped catheter is inserted through the femoral vein, advanced to the heart, and passed through the atrial septum to reach the mitral valve. Inflation of the balloon splits the fused commissures of the stenotic valve, thereby increasing the valve area and improving blood flow from the left atrium to the left ventricle. This is a common non-surgical intervention for symptomatic mitral valve stenosis.