Valvular Heart Disease

Valvular heart disease refers to disorders of one or more of the heart's four valves, in which a valve either fails to open fully (stenosis) or fails to close completely (regurgitation), disturbing blood flow through the heart. It can lead to heart failure and arrhythmias and is increasingly treated with both surgical and catheter-based procedures. For nurses, this means assessment of murmurs and symptoms, peri-procedural care, and follow-up after valve repair or replacement.

Definition

Heart valve diseases (MeSH descriptor Heart Valve Diseases) are structural or functional disorders of the cardiac valves causing either stenosis (restricted opening and obstructed forward flow) or regurgitation (incomplete closure and backward leakage), most often affecting the aortic and mitral valves.

Scope

This topic covers what valvular heart disease is, the distinction between stenosis and regurgitation, the haemodynamic consequences, and the guideline framework for management including surgical and transcatheter treatment. It frames the nursing relevance of assessment and peri-procedural care in reference terms, without prescribing individualized assessment or treatment.

Core questions

• What is the difference between valvular stenosis and regurgitation?
• How does valve dysfunction lead to heart failure and other complications?
• How do surgical and transcatheter options fit within guideline-based management?

Key concepts

• Stenosis versus regurgitation
• Aortic and mitral valve disease
• Heart murmurs and auscultation
• Pressure and volume overload
• Surgical valve repair and replacement
• Transcatheter valve interventions
• Anticoagulation after prosthetic valves

Mechanisms

Each heart valve normally ensures one-way blood flow. In stenosis, a valve becomes narrowed or stiffened so that the chamber upstream must generate higher pressure to drive blood through, producing pressure overload and hypertrophy. In regurgitation, a valve fails to close fully so that blood leaks backward, producing volume overload and chamber dilatation. Over time these stresses can lead to heart failure, atrial arrhythmias, and reduced exercise tolerance (Vahanian et al., 2021; Otto et al., 2021). Disease may be degenerative, congenital, infective, or rheumatic in origin.

Clinical relevance

Valvular disease is an important cause of murmurs, heart failure, and cardiac procedures, and nursing roles include symptom and murmur assessment, peri-procedural care for surgical and transcatheter interventions, and follow-up including anticoagulation education after prosthetic valves. This entry describes the condition and its guideline framework for reference and education and is not a basis for individualized diagnosis or treatment.

Epidemiology

Valvular heart disease becomes more common with age, with calcific aortic stenosis and degenerative mitral regurgitation being frequent in older populations, while rheumatic valve disease remains an important cause in many regions; the guidelines note its growing burden as populations age (Vahanian et al., 2021; Otto et al., 2021).

Evidence & guidelines

Management is structured by the 2021 ESC/EACTS guidelines and the 2020 ACC/AHA guideline for valvular heart disease, which define assessment by echocardiography, severity grading, the timing of intervention, and the choice between surgical and transcatheter treatment, alongside the monitoring and education roles in which nurses participate (Vahanian et al., 2021; Otto et al., 2021).

Seminal works

• vahanian-2021
• otto-2021

Frequently asked questions

What is the difference between valve stenosis and regurgitation?

Stenosis is a valve that does not open fully, obstructing forward blood flow, whereas regurgitation is a valve that does not close fully, allowing blood to leak backward; both disturb cardiac haemodynamics and can lead to heart failure.

How is valvular heart disease treated?

Depending on the valve, severity, and patient factors, management ranges from monitoring to surgical repair or replacement and increasingly to transcatheter interventions; current ESC/EACTS and ACC/AHA guidelines describe how these options are selected.