The impact of infarct size on regional and global left ventricular systolic function: a cardiac magnetic resonance imaging study View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2015-04-12

AUTHORS

Alberto Palazzuoli, Matteo Beltrami, Luigi Gennari, A. Ghosh Dastidar, Ranuccio Nuti, Elisa McAlindon, Gianni D. Angelini, Chiara Bucciarelli-Ducci

ABSTRACT

Myocardial infarction (MI) results in myocardial scarring which can have an impact on left ventricular (LV) stiffness and contractile function, ultimately leading to reduced LV systolic function and LV remodelling, However some concerns about the relation between scar extension and segmental wall motion contractility is not enough clear. Thus, the association between myocardial scar, LV regional and global function and LV remodeling should be investigated. We studied the relationship between scar extension, wall motion score index (WMSI), LV dimensions and systolic function in a group of patients with previous MI by cardiac magnetic resonance (CMR). 133 patients with previous (>6 month) MI were retrospectively enrolled in the study. Indexed end-systolic volume (ESVi), indexed end-diastolic volume (EDVi), LV ejection fraction (EF), stroke volume (SV), LV mass were measured using CMR. WMSI and sum scar score (SSS) were also measured following AHA\ACC criteria giving an arbitrary cut-off to distinguish larger from restricted late gadolinium enhancement (LGE) area. A total of 2261 segments were studied: regional wall motion abnormalities were present in 1032 segments (45 %) and 724 (32 %) showed presence of MI (LGE). WMSI correlated significantly with EF (r = −0.87, p < 0.0001) in all patients and in both patients with EF ≥ 40 % (r = −0.77, p < 0.0001) and EF < 40 % (r = −0.68, p < 0.0001). WMSI also correlated significantly with SSS (r = 0.57, p < 0.0001). The correlation between WMSI and SSS was more significant in patients with transmural MI (WMSI 2.1 ± 0.5 and SSS 17 ± 8; r = 0.55, p < 0.0001) than with non transmural MI (WMSI 1.6 ± 0.7 and SSS 6 ± 4; r = 0.34 and p = 0.02). A significant correlation was also found between EF and SSS (r = −0.55 and p < 0.0001) and between SSS and LV indexed volumes (EDVi; r = 0.44, p < 0.0001 and ESVi; r = 0.51, p < 0.0001). Infarct transmurality and extension as expressed as SSS assessed with cardiac MRI has an impact on global and regional systolic function. A multi-parametric score measuring WMSI scar transmurality and extension, could better identify an increased cardiac remodeling after coronary event. More... »

PAGES

1037-1044

References to SciGraph publications

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s10554-015-0657-3

DOI

http://dx.doi.org/10.1007/s10554-015-0657-3

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1032369891

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/25863669


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76 late gadolinium enhancement (LGE) areas
77 left ventricular stiffness
78 left ventricular systolic function
79 magnetic resonance
80 magnetic resonance imaging study
81 mass
82 motion abnormalities
83 motion contractility
84 motion score index
85 multi-parametric score
86 myocardial infarction results
87 myocardial scar
88 myocardial scarring
89 non transmural MI
90 patients
91 presence
92 presence of MI
93 previous MI
94 regional systolic function
95 regional wall motion abnormalities
96 relation
97 relationship
98 remodeling
99 remodelling
100 resonance
101 resonance imaging study
102 results
103 scar
104 scar extension
105 scar score
106 scar transmurality
107 scarring
108 score index
109 scores
110 segmental wall motion contractility
111 segments
112 significant correlation
113 size
114 stiffness
115 stroke volume
116 study
117 systolic function
118 total
119 transmural MI
120 transmurality
121 ventricular stiffness
122 ventricular systolic function
123 volume
124 wall motion abnormalities
125 wall motion contractility
126 wall motion score index
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