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Clinical Evidence and Methodology

EVIDENCE SYNTHESIS

Clinical Reference Hub

Curated insights • How it Works • Practical Pearls • Evidence Base

CLINICAL INSIGHT

When to Use

When to Use

  • Assessment of Rheumatic Mitral Stenosis (MS) suitability for Percutaneous Mitral Balloon Valvuloplasty (PMBV).
  • To predict the immediate result and long-term durability of the valvuloplasty procedure.

Absolute Contraindications to PMBV

Presence of Left Atrial (LA) thrombus or Moderate-to-Severe Mitral Regurgitation (MR). Even if the Wilkins score is low, these findings preclude the percutaneous approach.

CLINICAL INSIGHT

How it Works

Scoring Components

The score evaluates four specific morphologic features of the mitral valve on a scale of 1 to 4:

Criteria

  • Mobility: Refers to the motion of the leaflets.
  • Subvalvular Thickening: Refers to the thickening and fusion of the chordae tendineae and papillary muscles.
  • Leaflet Thickening: Refers to the thickening of the leaflet tissue itself.
  • Calcification: Refers to the presence and extent of echocardiographic brightness (calcification).

Interpretation

  • Score ≤ 8: High likelihood of success (>90%).
  • Score 9–11: Intermediate likelihood; procedure may be attempted with caution.
  • Score ≥ 12: Low likelihood of success; higher risk of severe MR or technical failure.
CLINICAL INSIGHT

Practical Pearls

Cormier Score Alternative

While the Wilkins score is the international standard, the Cormier score is sometimes used in Europe. It focuses more heavily on the degree of calcification and subvalvular involvement, which are the primary drivers of PMBV failure.

Commissural Calcification

Modern refinements to the Wilkins score suggest that the presence of calcium IN THE COMMISSURES is more predictive of poor outcome than overall leaflet calcium. A "low" Wilkins score with commissural calcium may still lead to procedural failure.

CLINICAL INSIGHT

Evidence Base

Original Validation

The echocardiographic prediction of the anatomic outcome of percutaneous mitral valvuloplasty.

Wilkins GT, Weyman AE, Abascal VM, et al.J Am Coll Cardiol.1988

Wilkins Score

Wilkins Score (Mitral Valvuloplasty): Echocardiographic score used to predict the outcome of PMBV in patients with Rheumatic Mitral Stenosis.

EVIDENCE SYNTHESIS

Clinical Reference Hub

Curated insights • How it Works • Practical Pearls • Evidence Base

CLINICAL INSIGHT

When to Use

When to Use

  • Assessment of Rheumatic Mitral Stenosis (MS) suitability for Percutaneous Mitral Balloon Valvuloplasty (PMBV).
  • To predict the immediate result and long-term durability of the valvuloplasty procedure.

Absolute Contraindications to PMBV

Presence of Left Atrial (LA) thrombus or Moderate-to-Severe Mitral Regurgitation (MR). Even if the Wilkins score is low, these findings preclude the percutaneous approach.

CLINICAL INSIGHT

How it Works

Scoring Components

The score evaluates four specific morphologic features of the mitral valve on a scale of 1 to 4:

Criteria

  • Mobility: Refers to the motion of the leaflets.
  • Subvalvular Thickening: Refers to the thickening and fusion of the chordae tendineae and papillary muscles.
  • Leaflet Thickening: Refers to the thickening of the leaflet tissue itself.
  • Calcification: Refers to the presence and extent of echocardiographic brightness (calcification).

Interpretation

  • Score ≤ 8: High likelihood of success (>90%).
  • Score 9–11: Intermediate likelihood; procedure may be attempted with caution.
  • Score ≥ 12: Low likelihood of success; higher risk of severe MR or technical failure.
CLINICAL INSIGHT

Practical Pearls

Cormier Score Alternative

While the Wilkins score is the international standard, the Cormier score is sometimes used in Europe. It focuses more heavily on the degree of calcification and subvalvular involvement, which are the primary drivers of PMBV failure.

Commissural Calcification

Modern refinements to the Wilkins score suggest that the presence of calcium IN THE COMMISSURES is more predictive of poor outcome than overall leaflet calcium. A "low" Wilkins score with commissural calcium may still lead to procedural failure.

CLINICAL INSIGHT

Evidence Base

Original Validation

The echocardiographic prediction of the anatomic outcome of percutaneous mitral valvuloplasty.

Wilkins GT, Weyman AE, Abascal VM, et al.J Am Coll Cardiol.1988