What is the difference between valve repair and valve replacement?

Repair reconstructs and preserves the patient's own valve, while replacement removes the diseased valve and inserts a mechanical or biological prosthesis. The two strategies differ in durability, the need for long-term anticoagulation, and the lesions to which they are suited; the trade-offs are discussed in the repair-versus-replacement topic entry.

Is all valve surgery open-heart surgery?

No. Many valves are still treated through open or minimally invasive surgery on cardiopulmonary bypass, but transcatheter techniques now allow some valves — most established for the aortic valve — to be implanted through a catheter without opening the chest.

Valvular Heart Disease Surgery

Valvular heart disease surgery is the branch of cardiothoracic surgery concerned with the operative treatment of the four cardiac valves — mitral, aortic, tricuspid and pulmonary — when stenosis (obstruction), regurgitation (leakage), or a combination of the two impairs the heart's function. It encompasses both valve repair, which preserves and reconstructs the native valve, and valve replacement with a mechanical or biological prosthesis, performed through conventional open, minimally invasive, or transcatheter approaches.

Definition

Valvular heart disease surgery comprises the surgical and transcatheter procedures used to repair or replace a diseased cardiac valve in order to relieve stenosis or regurgitation and restore unidirectional blood flow.

Scope

This area orients the reader to the surgical management of valvular disease as a whole: the lesions that bring a valve to operation, the central choice between repairing and replacing a valve, the prostheses available, and the procedural routes from open sternotomy to transcatheter implantation. It links to the detailed topic entries on the mitral and aortic valves, prosthetic valves, and repair-versus-replacement strategy. It is a reference overview of the discipline, not operative or patient-management guidance.

Sub-topics

Core questions

Which valve lesions warrant surgical intervention and at what point in their natural history?
When can a native valve be repaired rather than replaced?
How does the choice of prosthesis and surgical approach affect durability, anticoagulation needs, and outcome?

Key concepts

Valvular stenosis and regurgitation
Valve repair versus replacement
Mechanical and bioprosthetic valves
Transcatheter valve implantation
Heart-team decision making
Cardiopulmonary bypass and myocardial protection

Mechanisms

A diseased valve disturbs the heart's pressure-volume relationships: stenosis imposes a pressure overload that drives concentric hypertrophy, while regurgitation imposes a volume overload that drives chamber dilatation. Left untreated, both can progress to irreversible ventricular dysfunction, which is why timing of intervention is a recurring theme across the topic entries. Surgery aims to remove the obstruction or eliminate the leak — by reconstructing the native leaflets and annulus (repair) or by excising the valve and seating a prosthesis (replacement) — thereby unloading the affected ventricle and re-establishing competent, unidirectional flow. Most procedures are performed on cardiopulmonary bypass with the heart arrested, although transcatheter techniques now allow some valves to be implanted on the beating heart.

Clinical relevance

Valvular surgery is one of the highest-volume domains of adult cardiac surgery, and modern guidelines frame valve management around a multidisciplinary heart team that weighs valve anatomy, ventricular function, surgical risk, and patient preference. This entry describes the discipline and the evidence that informs it; it does not provide thresholds for operating on an individual patient or recommend a specific procedure.

Epidemiology

Valvular heart disease is common and its burden rises with age; degenerative (calcific aortic stenosis and degenerative mitral regurgitation) lesions predominate in higher-income settings, while rheumatic disease remains a major cause worldwide. The expansion of transcatheter aortic valve replacement has substantially changed the population treated for aortic stenosis over the past two decades.

History

Surgical treatment of heart valves began with closed mitral commissurotomy in the mid-twentieth century, was transformed by the advent of cardiopulmonary bypass and the first successful prosthetic valves around 1960, and matured with Alain Carpentier's systematic techniques of valve reconstruction. The twenty-first century brought transcatheter valve therapy, beginning with aortic implantation, which has progressively broadened the range of patients who can be treated.

Key figures

Alain Carpentier
Albert Starr
Tirone David
Alec Vahanian

Seminal works

vahanian-2022
otto-2021

Frequently asked questions

What is the difference between valve repair and valve replacement?: Repair reconstructs and preserves the patient's own valve, while replacement removes the diseased valve and inserts a mechanical or biological prosthesis. The two strategies differ in durability, the need for long-term anticoagulation, and the lesions to which they are suited; the trade-offs are discussed in the repair-versus-replacement topic entry.
Is all valve surgery open-heart surgery?: No. Many valves are still treated through open or minimally invasive surgery on cardiopulmonary bypass, but transcatheter techniques now allow some valves — most established for the aortic valve — to be implanted through a catheter without opening the chest.