Concentric LV Remodeling as a Sign of Cardiovascular Disease
Yes, concentric left ventricular remodeling is definitively a sign of cardiovascular disease and represents a pathological cardiac adaptation that independently predicts increased cardiovascular morbidity and mortality.
Definition and Diagnostic Criteria
Concentric LV remodeling is characterized by:
- Normal LV mass (indexed <95 g/m² in women, <115 g/m² in men by linear methods; <88 g/m² in women, <102 g/m² in men by 2D methods) 1
- Increased relative wall thickness (RWT) ≥0.42, calculated as (2 × posterior wall thickness)/(LV internal diameter at end-diastole) 1
- Normal or small LV cavity size with usually increased wall thickness 2
Pathophysiology and Disease Associations
Concentric remodeling represents a late-stage maladaptive response of the left ventricle to chronic hemodynamic stress 2. It is most commonly associated with:
- Longstanding hypertension, especially untreated hypertension 2
- Coronary artery disease as the most common association 2
- Chronic pressure or volume overload 2
- Prior myocardial infarction 2
The greatest inheritable cardiovascular risk among LV geometric patterns was found specifically for concentric remodeling 2.
Prognostic Significance and Cardiovascular Risk
Independent Predictor of Adverse Outcomes
Concentric remodeling independently predicts cardiovascular events even in patients with normal LV mass:
- In hypertensive patients with normal LV mass, concentric remodeling confers a 2.56-fold increased risk of cardiovascular morbid events (95% CI 1.20-5.45, p<0.01) compared to normal geometry, independent of age, gender, diabetes, LV mass index, and blood pressure 3
- Cardiovascular morbidity rates are more than doubled (2.39 vs 1.12 events per 100 patient-years) in patients with concentric remodeling versus normal geometry 3
- In uncomplicated mild hypertension, concentric remodeling shows a 1.78-fold increased risk (95% CI 1.02-3.1, p<0.05) of cardiovascular events compared to normal geometry 4
Associated Vascular and Coronary Disease
Patients with concentric remodeling demonstrate:
- Greater carotid intima-media thickness and pulse wave velocity compared to those with normal geometry 5
- Higher prevalence of coronary stenosis >50% on angiography 5
- Increased coronary plaque burden, with 1.1-1.3 more segments of plaque than normal geometry (p≤0.05) 6
- Two-fold increased odds of having concentric remodeling in patients with extensive coronary plaque (>4 segments) versus no CAD 6
Recent Mortality Data
The most recent high-quality evidence demonstrates:
- In a large cohort (n=67,108), concentric remodeling significantly interacts with supranormal LVEF to predict mortality, particularly in women (p for interaction <0.001) 7
- Among deployed veterans, concentric remodeling rates (12-34%) exceed civilian population rates (8-21%) and are associated with impaired exercise capacity, greater ventilatory inefficiency, and increased heart rate reserve 8
- In moderate aortic stenosis, concentric remodeling progresses to concentric hypertrophy, which independently predicts mortality (HR 1.258,95% CI 1.016-1.558, p=0.035) 9
Clinical Implications
Functional Consequences
Concentric remodeling is associated with:
- Dramatic degradation of diastolic function 2
- Loss of radial and longitudinal myocardial function 2
- Changes in LV shape (more rounded rather than bullet-shaped) 2
- Reduced exercise capacity and abnormal cardiopulmonary exercise testing parameters 8
Risk Stratification
Concentric remodeling should trigger intensified medical therapy and closer surveillance 6. The finding indicates:
- Subclinical cardiovascular disease requiring aggressive risk factor modification
- Need for comprehensive evaluation of coronary artery disease burden
- Indication for optimized antihypertensive therapy targeting LV geometry normalization
- Closer monitoring for progression to overt LV hypertrophy or systolic dysfunction
Important Caveats
One notable exception exists: In the Heart and Soul Study of stable coronary artery disease patients, concentric remodeling was not independently associated with adverse outcomes after multivariate adjustment 10. However, this contrasts with multiple other studies and may reflect the specific population studied (stable CAD rather than hypertension or general populations).
The prognostic significance appears strongest in hypertensive populations and those undergoing evaluation for coronary disease 3, 4, 5, 6.