Comparison of wall thickening and ejection fraction by cardiovascular magnetic resonance and echocardiography in acute myocardial infarction

Autor: Müller Silvana, Bartel Thomas, Köhler Almut, Klug Gert, Pedarnig Kathrin, Mayr Agnes, Schocke Michael, Nowosielski Martha, Trieb Thomas, Pachinger Otmar, Metzler Bernhard
Jazyk: angličtina
Rok vydání: 2009
Předmět:
Zdroj: Journal of Cardiovascular Magnetic Resonance, Vol 11, Iss 1, p 22 (2009)
Druh dokumentu: article
ISSN: 1532-429X
1097-6647
DOI: 10.1186/1532-429X-11-22
Popis: Abstract Objectives The purpose of this study was to compare cardiovascular magnetic resonance (CMR) and echocardiography (echo) in patients treated with primary percutaneous coronary intervention (PCI) for acute myocardial infarction (AMI) with emphasis on the analysis of left ventricular function and left ventricular wall motion characteristics. Methods We performed CMR and echo in 52 patients with first AMI shortly after primary angioplasty and four months thereafter. CMR included cine-MR and T1-weighted first-pass and late-gadolinium enhancement (LGE) sequences. Global ejection fraction (EFCMR, %) and regional left ventricular function (systolic wall thickening %, [SWT]) were determined from cine-MR images. In echo the global left ventricular function (EFecho, %) and regional wall motion abnormalities were determined. A segment in echo was scored as "infarcted" if it was visually > 50% hypokinetic. Results EFecho revealed a poor significant agreement with EFCMR at baseline (r: 0.326; p < 0.01) but higher correlation at follow-up (r: 0.479; p < 0.001). The number of infarcted segments in echocardiography correlated best with the number of segments which showed systolic wall thickening < 30% (r: 0.498; p < 0.001) at baseline and (r: 0.474; p < 0.001) at follow-up. Improvement of EF was detected in both CMR and echocardiography increasing from 44.2 ± 11.6% to 49.2 ± 11% (p < 0.001) by CMR and from 51.2 ± 8.1% to 54.5 ± 8.3% (p < 0.001) by echocardiography. Conclusion Wall motion and EF by CMR and echocardiography correlate poorly in the acute stage of myocardial infarction. Correlation improves after four months. Systolic wall thickening by CMR < 30% indicates an infarcted segment with influence on the left ventricular function.
Databáze: Directory of Open Access Journals
Externí odkaz: