Abstract
Background
Recently, triglyceride deposit cardiomyovasculopathy (TGCV) with defective intracellular lipolysis was found to be a disease that causes heart failure. As a diagnostic criterion for TGCV, an Iodaine-123-β-methyl iodophenyl-pentadecanoic acid washout rate (BMIPP WOR) of < 10% is used, but its clinical significance in patients with heart failure remains to be clarified.
Methods
In 62 hospitalized patients with chronic heart failure, 123I-BMIPP myocardial single-photon emission computed tomography (SPECT) was performed predischarge state. The prevalence of TGCV was investigated. Subsequently, follow-up was conducted for ≥ 90 days (mean: 724.6 ± 392.7 days), and the association between the BMIPP WOR and cardiac events was examined, establishing all-cause mortality and admission due to heart failure as endpoints.
Results
Of the 62 patients, the WOR was < 10% in 41 (66.1%). Of these, 26 (41.9%) were diagnosed with definite TGCV. Furthermore, cardiac events were noted in 12 patients (19.4%). Analysis with Cox proportional hazards models showed that the BMIPP WOR < 4.5% was a significant event-predicting factor [HR 4.29, 95% CI: 1.20–16.87; p = 0.0245]. On a Kaplan–Meier curve, the WOR was 4.5%; there was a significant difference in the incidence of events (p = 0.0298).
Conclusion
In the predischarge state of heart failure, 123I-BMIPP myocardial SPECT was performed. In approximately 40% of the patients, a diagnosis of TGCV was made. The results suggested that the BMIPP WOR is useful for predicting the prognosis of chronic heart failure patients regardless of TGCV.
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Data availability
The datasets during and analyzed during the current study are available from the corresponding author on reasonable request.
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We would like to thank Editage (www.editage.com) for English language editing.
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This research was supported by Nihon Medi-Physics Co. Ltd.
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The study was approved by the Juntendo University Ethics Committee (16–224 on 24/01/2017). All patients received informed consent for the study and publication.
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Dr. Fujimoto and Dr. Hirano have a research agreement with Nihon Medi-Physics Co. Ltd. Dr. Minamino has a scholarship grant with Nihon Medi-Physics Co. Ltd. All other authors declare no competing interests.
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Aoshima, C., Fujimoto, S., Kudo, A. et al. Clinical significance of 123I-BMIPP washout rate in patients with uncertain chronic heart failure. Eur J Nucl Med Mol Imaging 49, 3129–3139 (2022). https://doi.org/10.1007/s00259-022-05749-1
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DOI: https://doi.org/10.1007/s00259-022-05749-1