Aim and patients: The aim of the present study is to evaluate the additional value of systolic wall thickening to myocardial perfusion in diagnosing myocardial stunning in patients with angiography proven coronary artery disease. We selected 91 ischemic patients (82 males; mean age 59.7 ± 10.3) with CAD documented by angiography. Ischemia was defined as a summed difference score â¥5. All patients underwent a 2-day gated perfusion SPECT protocol. The patients received a dose of 740 MBq of99mTc-tetrofosmin after stress and at rest. Treadmill maximal exercise tests were performed on all patients.Results: The post-stress LVEF was significantly lower than rest LVEF (48.1% ± 10.3% vs 50.3% ± 10.7%; P = .0001). The wall thickening summed difference score was 4.44 ± 4.13 (P = .0001). At a multivariate regression analysis, only WT-SDS as independent variable was significantly correlated with myocardial ischemia (SDS). We also divided patients according to SDS in those with mild (SDS < 8) and severe (SDS ⥠8) ischemia. WT-SDS, but not âLVEF, was significantly different between groups. Conclusions: WT-SDS, more than the depression in the global function (âLVEF) of the left ventricle, correlates with the degree of ischemia and better identifies, when present, the stunning phenomenon.
Additional value of systolic wall thickening in myocardial stunning evaluated by stress-rest gated perfusion SPECT / A. Bestetti, B. Cuko, A. Decarli, A. Galli, F. Lombardi. - In: JOURNAL OF NUCLEAR CARDIOLOGY. - ISSN 1071-3581. - (2017). [Epub ahead of print]
Titolo: | Additional value of systolic wall thickening in myocardial stunning evaluated by stress-rest gated perfusion SPECT |
Autori: | LOMBARDI, FEDERICO (Corresponding) |
Parole Chiave: | cardiac single-photon emission computed tomography; Coronary artery disease; ischemic heart disease; myocardial stunning; Radiology, Nuclear Medicine and Imaging; Cardiology and Cardiovascular Medicine |
Settore Scientifico Disciplinare: | Settore MED/36 - Diagnostica per Immagini e Radioterapia |
Data di pubblicazione: | 2017 |
Rivista: | |
Tipologia: | Article (author) |
Data ahead of print / Data di stampa: | 8-nov-2017 |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1007/s12350-017-1115-5 |
Appare nelle tipologie: | 01 - Articolo su periodico |
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