Clinical impacts of scar reduction on gated myocardial perfusion SPECT after cardiac resynchronization therapy.
J Nucl Cardiol
; 29(5): 2571-2579, 2022 Oct.
Article
em En
| MEDLINE
| ID: mdl-34414552
ABSTRACT
BACKGROUND:
It had not been reported that myocardial scar shown on gated myocardial perfusion SPECT (GMPS) might reduce after cardiac resynchronization therapy (CRT). In this study, we aim to investigate the clinical impact and characteristic of scar reduction (SR) after CRT. METHODS ANDRESULTS:
Sixty-one heart failure patients following standard indication for CRT received twice GMPS as pre- and post-CRT evaluations. The patients with an absolute reduction of scar ≥ 10% after CRT were classified as the SR group while the rest were classified as the non-SR group. The SR group (N = 22, 36%) showed more improvement on LV function (∆LVEF 18.1 ± 12.4 vs 9.4 ± 9.9 %, P = 0.007, ∆ESV - 91.6 ± 52.6 vs - 38.1 ± 46.5 mL, P < 0.001) and dyssynchrony (ΔPSD - 26.19 ± 18.42 vs - 5.8 ± 23.0°, P < 0.001, Δ BW - 128.7 ± 82.8 vs - 25.2 ± 109.0°, P < 0.001) than non-SR group (N = 39, 64%). Multivariate logistic regression analysis showed baseline QRSd (95% CI 1.019-1.100, P = 0.006) and pre-CRT Reduced Wall Thickening (RWT) (95% CI 1.016-1.173, P = 0.028) were independent predictors for the development of SR.CONCLUSION:
More than one third of patients showed SR after CRT who had more post-CRT improvement on LV function and dyssynchrony than those without SR. Wider QRSd and higher RWT before CRT were related to the development of SR after CRT.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Imagem de Perfusão do Miocárdio
/
Terapia de Ressincronização Cardíaca
/
Insuficiência Cardíaca
Tipo de estudo:
Prognostic_studies
Limite:
Humans
Idioma:
En
Revista:
J Nucl Cardiol
Assunto da revista:
CARDIOLOGIA
Ano de publicação:
2022
Tipo de documento:
Article
País de afiliação:
Taiwan