Echocardiography overestimates LV mass in the elderly as compared to cardiac CT


Autoři: Joshua Stokar aff001;  David Leibowitz aff002;  Ronen Durst aff002;  Dorith Shaham aff003;  Donna R. Zwas aff002
Působiště autorů: Division of Endocrinology, Hadassah University Medical Center, Jerusalem, Israel aff001;  Division of Cardiology, Hadassah University Medical Center, Jerusalem, Israel aff002;  Division of Radiology, Hadassah University Medical Center, Jerusalem, Israel aff003
Vyšlo v časopise: PLoS ONE 14(10)
Kategorie: Research Article
doi: 10.1371/journal.pone.0224104

Souhrn

Purpose

Echocardiographic studies have shown an increase in LV mass with advanced age. However, autopsy and MRI studies demonstrate that with aging, LV mass is unchanged or slightly decreased, with a decrease in LV volume and an increase in wall thickness consistent with concentric remodeling. LV structural remodeling with aging may lead to an overestimation of LV mass in older adults when using standard echocardiography measurements and calculations. This study compared CT and echocardiographic LV mass calculation in younger and older patients and parameters associated with age-related LV remodeling.

Methods

Same subject modality comparison of echocardiographic and cardiac CT LV measurement with derivation of LV mass was performed retrospectively. Echocardiographic measurements were performed by a single observer in accordance with European Association of Cardiovascular Imaging (EACI)/American Society of Echocardiography (ASE) guidelines. CT measurements were performed in end-diastole on multiplanar reformatted image planes corresponding to those typically used in echocardiography. Calculated CT measurements were based on automatic segmentation of heart chambers via edge-tracing algorithms.

Results

129 patients were identified. In patients age 65 and older, LV mass was significantly higher when calculated using echocardiographic measurements compared to CT. Patients 65 years of age and older were found to have increased average wall thickness measurements with echocardiography but not with CT. The discrepancy between calculated echo and CT LV mass was reduced when using the mid-septal instead of proximal wall width for the EACI convention.

Conclusion

In the elderly, increased echo-derived LV mass may reflect remodeling rather than a true increase in LV mass.

Klíčová slova:

Age groups – Aging – Computed axial tomography – Echocardiography – Elderly – Geriatrics – Heart – Magnetic resonance imaging


Zdroje

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