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STS Mitral Valve Repair/Replacement (MVRR) Composite Score

CBE ID
3031
1.5 Project
Endorsement Status
1.0 New or Maintenance
1.1 Measure Structure
Previous Endorsement Cycle
Is Under Review
No
Next Maintenance Cycle
Fall 2024
1.6 Measure Description

The STS Mitral Valve Repair/Replacement (MVRR) Composite Score measures surgical performance for isolated MVRR with or without concomitant tricuspid valve repair (TVr), surgical ablation for atrial fibrillation (AF), or repair of atrial septal defect (ASD). To assess overall quality, the STS MVRR Composite Score comprises two domains consisting of six measures:

Domain 1 – Absence of Operative Mortality
Proportion of patients (risk-adjusted) who do not experience operative mortality. Operative mortality is defined as death before hospital discharge or within 30 days of the operation.

Domain 2 – Absence of Major Morbidity
Proportion of patients (risk-adjusted) who do not experience any major morbidity. Major morbidity is defined as the occurrence of any one or more of the following major complications:
1. Prolonged ventilation,
2. Deep sternal wound infection,
3. Permanent stroke,
4. Renal failure, and
5. Reoperations for bleeding, prosthetic or native valve dysfunction, and other cardiac reasons, but not for other non-cardiac reasons.

Outcome data are collected on all patients and from all participants. For optimal measure reliability, participants meeting a volume threshold of at least 36 cases over 3 years (i.e., approximately one mitral case per month) receive a score for each of the two domains, plus an overall composite score. The overall composite score is created by “rolling up” the domain scores into a single number. In addition to receiving a numeric score, participants are assigned to rating categories designated by the following:
1 star – lower-than-expected performance
2 stars – as-expected performance
3 stars – higher-than-expected performance

Measure Specs
General Information
1.7 Measure Type
1.3 Electronic Clinical Quality Measure (eCQM)
1.8 Level of Analysis
1.9 Care Setting
1.20 Types of Data Sources