Structural heart disease with preserved left ventricular systolic function
Mild concentric left ventricular hypertrophy indicates a chronic structural cardiac abnormality, commonly from long-standing pressure overload such as hypertension. [2] A left ventricular ejection fraction (LVEF) of 55–60% represents preserved left ventricular systolic function. [3]
Heart-failure stage implication (ACC/AHA stage)
Concentric left ventricular hypertrophy qualifies as evidence of structural heart disease in the ACC/AHA heart-failure staging framework. [2] This pattern is most consistent with ACC/AHA stage B heart failure (pre–heart failure) when no current or prior heart-failure symptoms or signs are present. [2]
NYHA functional classification implication (symptom-based staging)
Formal New York Heart Association (NYHA) functional classification is used to describe functional capacity for symptomatic heart failure (ACC/AHA stage C or D). [1] Therefore, a clinician’s recommendation for formal NYHA staging indicates presence of heart-failure–type symptoms requiring functional categorization. [1] NYHA class is determined by clinical limitation with activities, where class I indicates no symptoms with ordinary activity and class IV indicates symptoms at rest. [4]
Preserved EF heart-failure phenotype consideration
Preserved EF heart failure is characterized by heart failure symptoms and signs with preserved LVEF. [5] An LVEF of 55–60% falls within the preserved range (and within the typical “normal” EF range cited by major patient-facing guidance). [3][5] If heart-failure symptoms and objective evidence of increased left-sided filling pressures or related abnormalities are present, the clinical syndrome can be classified as HF with preserved ejection fraction (HFpEF). [5]
How these findings fit together clinically
Mild concentric LVH supports chronic pressure-related remodeling and increased future risk for symptomatic heart failure. [2][6] Preserved LVEF indicates that the syndrome is not reduced-EF (HFrEF) by systolic function criteria. [3][5] Recommended formal NYHA staging shifts the focus from “risk” (pre–heart failure) toward quantifying current symptom burden. [1][2]
Targeted clarifications needed to finalize the staging
Heart-failure staging requires separation of:
- Structural disease without current or prior heart-failure symptoms (ACC/AHA stage B). [2]
- Symptomatic heart failure with functional limitation requiring NYHA classification (ACC/AHA stage C or D). [1][2]
Measurement and interpretation anchors
LVEF quantifies the fraction of left ventricular volume ejected each beat, and typical “normal” EF ranges are commonly cited as approximately 55–70%. [3] NYHA functional class is anchored to symptom provocation and activity limitation rather than EF magnitude. [4]
Practical meaning of the reported values
The combination of mild concentric LVH and LVEF 55–60% indicates structural heart disease with preserved systolic function, which aligns with ACC/AHA stage B absent symptoms. [2][3] A recommendation for formal NYHA staging indicates that symptoms are being assessed for possible symptomatic (stage C) heart failure, with preserved EF being a key phenotype given the LVEF result. [1][5]