Journal of cardiology · 2024
Associations of adipose tissue depots with cardiac resynchronization therapy response and clinical outcomes: A CRT-HF Clinic substudy.
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Volk Maximilian C, Mirzai Saeid, Persits Ian, Sarnaik Kunaal S, Moennich Laurie Ann, Chen Po-Hao, Rickard John, Tang W H Wilson
Аннотация
BACKGROUND: The region of adipose deposition is an important determinant in the outcomes of patients with heart failure (HF). However, the impact of regional adiposity on HF patients undergoing cardiac resynchronization therapy (CRT) remains unclear.
METHODS: A retrospective cohort analysis was conducted on 95 patients from a single-center study, assessing post-CRT outcomes. Multi-slice body composition measurements of chest computed tomography before CRT placement were used for adipose quantification. Patients were stratified based on subcutaneous adiposity, intramuscular adiposity, and hepatic steatosis.
RESULTS/CONCLUSION: Subcutaneous adiposity correlated with higher CRT response rates (44.4 % in subcutaneous adiposity vs 16.7 % in subcutaneous adipopenia, p = 0.009), while intramuscular adiposity was associated with increased pre-frailty (adjusted OR 14.17, 95 % CI 2.24-89.57, p = 0.005). The higher response to CRT in patients with subcutaneous adiposity may be secondary to preferred subcutaneous over ectopic adipose fat deposition, which is potentially protective against cardiomyocyte dysfunction. Thus, intramuscular adiposity could potentially serve as a prognostic tool for frailty in HF patients.
METHODS: A retrospective cohort analysis was conducted on 95 patients from a single-center study, assessing post-CRT outcomes. Multi-slice body composition measurements of chest computed tomography before CRT placement were used for adipose quantification. Patients were stratified based on subcutaneous adiposity, intramuscular adiposity, and hepatic steatosis.
RESULTS/CONCLUSION: Subcutaneous adiposity correlated with higher CRT response rates (44.4 % in subcutaneous adiposity vs 16.7 % in subcutaneous adipopenia, p = 0.009), while intramuscular adiposity was associated with increased pre-frailty (adjusted OR 14.17, 95 % CI 2.24-89.57, p = 0.005). The higher response to CRT in patients with subcutaneous adiposity may be secondary to preferred subcutaneous over ectopic adipose fat deposition, which is potentially protective against cardiomyocyte dysfunction. Thus, intramuscular adiposity could potentially serve as a prognostic tool for frailty in HF patients.