Left ventricular end-systolic contractile entropy can predict cardiac prognosis in patients with complete left bundle branch block
Background Several patients with complete left bundle branch block (CLBBB) show left ventricular (LV) dyssynchrony and poor cardiac prognosis. However, the prognostic value of LV end-systolic contractile entropy which was measured by single-photon emission computer tomography (SPECT) has not been elucidated in patients with CLBBB. Methods and Results We recruited consecutive 115 sinus-rhythm patients with CLBBB who underwent ECG-gated 201TlCl-SPECT. After 30 days of observation, finally 102 patients (75.2 ± 9.5 years, 62 male) were enrolled and observed retrospectively for a median of 671 days. Twenty-five patients fell into major cardiac events. Multivariate Cox regression analysis showed estimated glomerular filtration rate (eGFR) ≤ 39.35 mL/min and entropy ≥ 79% were significant and independent predictors for major cardiac events (hazard ratio: 4.256 and 7.587, P value = 0.006 and < 0.001, respectively). Machine learning (Random Forest method) revealed eGFR and entropy had higher feature importance than other predictors (0.140 and 0.138, respectively). Kaplan-Meyer curve analysis demonstrated that the group with entropy ≥ 79% and eGFR ≤ 39.36 mL/min had the worst cardiac prognosis (Logrank: P = 0.002). Conclusions Left ventricular end-systolic contractile entropy predicts poor cardiac prognosis in patients with CLBBB, which may be more valuable than the other parameters of SPECT..
| Medienart: |
Artikel |
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| Erscheinungsjahr: |
2019 |
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| Erschienen: |
2019 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:28 |
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| Enthalten in: |
Journal of nuclear cardiology - 28(2019), 1 vom: 13. Mai, Seite 162-171 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Shimizu, Masato [VerfasserIn] |
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| Links: |
Volltext [lizenzpflichtig] |
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| Themen: |
Diagnostic and prognostic application |
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| Anmerkungen: |
© American Society of Nuclear Cardiology 2019 |
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| doi: |
10.1007/s12350-019-01739-3 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
OLC2124087010 |
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| 245 | 1 | 0 | |a Left ventricular end-systolic contractile entropy can predict cardiac prognosis in patients with complete left bundle branch block |
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| 520 | |a Background Several patients with complete left bundle branch block (CLBBB) show left ventricular (LV) dyssynchrony and poor cardiac prognosis. However, the prognostic value of LV end-systolic contractile entropy which was measured by single-photon emission computer tomography (SPECT) has not been elucidated in patients with CLBBB. Methods and Results We recruited consecutive 115 sinus-rhythm patients with CLBBB who underwent ECG-gated 201TlCl-SPECT. After 30 days of observation, finally 102 patients (75.2 ± 9.5 years, 62 male) were enrolled and observed retrospectively for a median of 671 days. Twenty-five patients fell into major cardiac events. Multivariate Cox regression analysis showed estimated glomerular filtration rate (eGFR) ≤ 39.35 mL/min and entropy ≥ 79% were significant and independent predictors for major cardiac events (hazard ratio: 4.256 and 7.587, P value = 0.006 and < 0.001, respectively). Machine learning (Random Forest method) revealed eGFR and entropy had higher feature importance than other predictors (0.140 and 0.138, respectively). Kaplan-Meyer curve analysis demonstrated that the group with entropy ≥ 79% and eGFR ≤ 39.36 mL/min had the worst cardiac prognosis (Logrank: P = 0.002). Conclusions Left ventricular end-systolic contractile entropy predicts poor cardiac prognosis in patients with CLBBB, which may be more valuable than the other parameters of SPECT. | ||
| 650 | 4 | |a Gated SPECT | |
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| 650 | 4 | |a diagnostic and prognostic application | |
| 700 | 1 | |a Iiya, Munehiro |4 aut | |
| 700 | 1 | |a Fujii, Hiroyuki |4 aut | |
| 700 | 1 | |a Kimura, Shigeki |4 aut | |
| 700 | 1 | |a Suzuki, Makoto |4 aut | |
| 700 | 1 | |a Nishizaki, Mitsuhiro |4 aut | |
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