BSA-Indexed Cardiac Chamber Measurements for Adults
For adults with BSA 1.6–2.0 m², use the 2019 European Association of Cardiovascular Imaging reference ranges, which provide comprehensive normal values indexed to BSA for all cardiac chambers measured by CMR, or the 2015 ASE/EACVI guidelines for echocardiographic measurements.
Left Ventricle (LV)
CMR Reference Values (Ages 20-80)
Based on the most robust guideline data 1:
Volumes:
LV end-diastolic volume (EDV)/BSA: 56–96 mL/m² (reference range)
- Mildly abnormal: 97–106 mL/m²
- Moderately abnormal: 107–116 mL/m²
- Severely abnormal: >116 mL/m²
LV end-systolic volume (ESV)/BSA: 14–34 mL/m² (reference range)
- Mildly abnormal: 35–39 mL/m²
- Moderately abnormal: 40–44 mL/m²
- Severely abnormal: >44 mL/m²
Mass:
- LV mass/BSA: 41–81 g/m² (reference range)
- Mildly abnormal: 82–91 g/m²
- Moderately abnormal: 92–101 g/m²
- Severely abnormal: >101 g/m²
Echocardiography Reference Values
For echo measurements, the 2015 ASE/EACVI guidelines 2 provide:
Linear Method:
- LV mass/BSA: 43–95 g/m² (women), 49–115 g/m² (men)
- Upper limit: 95 g/m² (women), 115 g/m² (men)
2D Method:
- LV mass/BSA: 44–88 g/m² (women), 50–102 g/m² (men)
- Upper limit: 88 g/m² (women), 102 g/m² (men)
Right Ventricle (RV)
CMR Reference Values (Ages 20-68)
1:
Volumes:
RV EDV/BSA: 48–112 mL/m² (reference range)
- Mildly abnormal: 113–128 mL/m²
- Moderately abnormal: 129–144 mL/m²
- Severely abnormal: >144 mL/m²
RV ESV/BSA: 12–52 mL/m² (reference range)
- Mildly abnormal: 53–62 mL/m²
- Moderately abnormal: 63–72 mL/m²
- Severely abnormal: >72 mL/m²
Mass:
- RV mass/BSA: 12–28 g/m² (reference range)
- Mildly abnormal: 29–32 g/m²
- Moderately abnormal: 33–36 g/m²
- Severely abnormal: >36 g/m²
Left Atrium (LA)
CMR Reference Values (Ages 20-80)
1:
Volume:
- Maximum LA volume/BSA: 27–53 mL/m² (reference range)
- Mildly abnormal: 54–60 mL/m²
- Moderately abnormal: 61–67 mL/m²
- Severely abnormal: >67 mL/m²
Area (4-chamber view):
- LA area/BSA: 8.4–15.6 cm²/m² (reference range)
- Mildly abnormal: 15.7–17.4 cm²/m²
- Moderately abnormal: 17.5–19.2 cm²/m²
- Severely abnormal: >19.2 cm²/m²
Area (2-chamber view):
- LA area/BSA: 6.2–15.8 cm²/m² (reference range)
- Mildly abnormal: 15.9–18.2 cm²/m²
- Moderately abnormal: 18.3–20.6 cm²/m²
- Severely abnormal: >20.6 cm²/m²
Right Atrium (RA)
CMR Reference Values
1:
Volume (Ages 25-73):
- Maximum RA volume/BSA: 18–90 mL/m² (reference range)
- Mildly abnormal: 91–108 mL/m²
- Moderately abnormal: 109–126 mL/m²
- Severely abnormal: >126 mL/m²
Area (Ages 20-80,4-chamber view):
- RA area/BSA: 8–16 cm²/m² (reference range)
- Mildly abnormal: 17–18 cm²/m²
- Moderately abnormal: 19–20 cm²/m²
- Severely abnormal: >20 cm²/m²
Critical Considerations
Modality Differences: CMR and echocardiography yield different absolute values due to technical differences in spatial resolution, inclusion of appendages in CMR volumes, and geometric assumptions in echo 1. Do not directly compare CMR and echo measurements or apply cutoffs from one modality to the other.
BSA Indexing Limitations: The guidelines acknowledge that BSA indexing may misclassify patients at extremes of body habitus, particularly those with obesity or sarcopenia 1, 3. In obese patients (BSA >2.0 m²), consider that indexed values may underestimate true chamber enlargement. Recent research 3 suggests alternative indexing methods (height^2.7) may reduce sex-based variability, though these lack widespread validation.
Population Variability: These reference ranges derive primarily from European and North American cohorts 1. Research demonstrates that populations with different body habitus (e.g., Asian populations 4, African populations 5) may have systematically different absolute values that normalize when properly indexed to BSA, reinforcing the importance of indexing rather than using population-specific absolute cutoffs.
Age and Sex Effects: While the guidelines provide combined-sex ranges for simplicity, cardiac chamber sizes vary by sex even after BSA indexing 6, 7. Men typically have 10-15% larger indexed volumes than women. Age-related changes include declining ventricular volumes and increasing atrial volumes with advancing age 6, 7.