Percutaneous and surgical treatment of aortic stenosis

Area of Science:

• Cardiovascular Medicine
• Geriatric Cardiology
• Interventional Cardiology

Background:

• Calcific aortic stenosis (AS) is the most prevalent valvular heart disease in the elderly, with increasing incidence due to population aging.
• Evidence links AS progression to atherosclerosis, prompting interest in pharmacological interventions, though recent trials have yielded disappointing results.
• Current primary treatments for AS involve mechanical interventions, with percutaneous techniques offering limited, transient benefits and associated risks.

Purpose of the Study:

• To review the current landscape of aortic stenosis treatment, focusing on mechanical interventions and emerging percutaneous techniques.
• To evaluate the role of aortic valvuloplasty and newer percutaneous valve implantation methods in managing AS.
• To discuss the established efficacy of surgical valve replacement as the definitive treatment for symptomatic AS.

Main Methods:

• Review of existing literature on aortic stenosis pathophysiology, drug therapy trials, and interventional procedures.
• Analysis of outcomes and limitations associated with aortic valvuloplasty.
• Discussion of the nascent percutaneous aortic valve implantation technique and its preliminary findings.
• Examination of current surgical valve replacement strategies, including valve choice and approaches.

Main Results:

• Pharmacological approaches to slow AS progression have been largely unsuccessful in clinical trials.
• Aortic valvuloplasty offers temporary, modest benefits but carries risks of stroke and vascular injury, primarily serving as a bridge to surgery.
• Percutaneous aortic valve implantation is an emerging technique with promising early results but requires further investigation due to limited patient numbers and follow-up.
• Surgical aortic valve replacement remains the gold standard for symptomatic severe AS, with ongoing trends towards earlier use in younger patients and minimally invasive approaches.

Conclusions:

• Mechanical interventions are the mainstay for treating calcific aortic stenosis, with surgical valve replacement being the definitive option.
• Percutaneous techniques, including aortic valvuloplasty and newer valve implantation methods, are evolving but currently play adjunctive or investigational roles.
• Future research should focus on refining percutaneous strategies and evaluating long-term outcomes for AS management.