BackgroundLeft ventricular remodeling (LVR) after AMI characterizes a factor of poor
prognosis. There is little information in the literature on the LVR analyzed with
three-dimensional echocardiography (3D ECHO). ObjectiveTo analyze, with 3D ECHO, the geometric and volumetric modifications of the left
ventricle (VE) six months after AMI in patients subjected to percutaneous primary
treatment. MethodsProspective study with 3D ECHO of 21 subjects (16 men, 56 ± 12 years-old),
affected by AMI with ST segment elevation. The morphological and functional
analysis (LV) with 3D ECHO (volumes, LVEF, 3D sphericity index) was carried out up
to seven days and six months after the AMI. The LVR was considered for increase
> 15% of the end diastolic volume of the LV (LVEDV) six months after the AMI,
compared to the LVEDV up to seven days from the event. ResultsEight (38%) patients have presented LVR. Echocardiographic measurements (n = 21
patients): I- up to seven days after the AMI: 1- LVEDV: 92.3 ± 22.3 mL; 2- LVEF:
0.51 ± 0.01; 3- sphericity index: 0.38 ± 0.05; II- after six months: 1- LVEDV:
107.3 ± 26.8 mL; 2- LVEF: 0.59 ± 0.01; 3- sphericity index: 0.31 ± 0.05.
Correlation coefficient (r) between the sphericity index up to seven days after
the AMI and the LVEDV at six months (n = 8) after the AMI: r: 0.74, p = 0.0007;
(r) between the sphericity index six months after the AMI and the LVEDV at six
months after the AMI: r: 0.85, p < 0.0001. ConclusionIn this series, LVR has been observed in 38% of the patients six months after the
AMI. The three-dimensional sphericity index has been associated to the occurrence
of LVR.