A clustering analysis was performed, considering the assessed cardiac functional parameters (LVEF, LVFS, LVSD, LVDD, LVSV, and LVDV), in order to identify sample groups in an unsupervised fashion.
In particular, they presented a significant reduction in LVEF and LVFS, a strong increase in LVSV and LVDV, and a moderate rise in LVDD and LVDV.
Cardiac functional parameters: LVEF: left ventricular ejection fraction; LVFS: left ventricular fractional shortening; LVDD: left ventricular diastolic diameter; LVSD: left ventricular systolic diameter; LVDV: left ventricular diastolic volume; LVSV: left ventricular systolic volume.
[1] Nonstandard abbreviations: ECG, electrocardiogram; EBCT, electron beam computed tomography; MR, magnetic resonance; CT, computed tomography; LV, left ventricular; RV, right ventricular; EDV, end-diastolic volume; ESV, end-systolic volume; SV, stroke volume; EF, ejection fraction;
LVSV, left ventricular stroke volume; RVSV, right ventricular stroke volume; EFP, electromagnetic flow probe; and CO, cardiac output.