Introduction: Little is known about reverse cardiac remodeling (CRR) under the low-dose S/V therapy. Methods: In 37 patients (mean age 64.5±17.5 years, five females) 24/26mg S/V BID was started. After one month of observation, the following CRR parameters improved: LVEDD (-∆2,9±2.6mm, p<0.01), LVESD (-∆ 2,4±2.5mm, p<0.01), LVEDV(-∆14.6±33.1ml, p=0.04), LVESV (-∆13.4±30.6ml, p=0.04), LAVI (-∆8.7±37.7ml/m2, p<0.01), and EROA (-∆ 0.09 ± 0,01cm2; p=0.03). In opposite to LVEF global longitudinal strain (GLS) changed from -6.6% to -7.9% (absolute improvement of 16%, p <0.001). Walked distance in 6-MWT ( +∆65.4 ± 75.8 m, p <0.001), and the quality of life (MLHFQ 22 vs 16 scores, p<0.01) improved. Decreasing NT-proBNP (-∆ 1,203,1±3,121,4pg/ml, p=0.03) and troponin T (-∆ 4.7±9.4pg/ml, p=0.004) were observed. Correlation between GLS and LVESV (r = -0,43, p = 0.027) was found. ROC curve analysis showed that GLS cut-off value -8% is a good predictor of clinical improvement (6MWT: AUC 0.69 p=0.04) and CRR (MRvol: AUC:0.74 p=0.01; LAVI: AUC 0.71 p=0.04). Conclusion: One-month, low-dose (24/26 mg BID) S/V therapy initiates CRR. GLS’s ability to evaluate LV function is better than LVEF’s. S/V should be started early as patients with symptomatic HFrEF and less impaired LV systolic function (GLS <-8%) are more likely to develop CRR and clinical improvement.

The diagnosis of acute myocarditis (AM) remains challenging because of its diverse clinical manifestations. Thus, a wide range of diagnostic tests may be warranted. Although cardiac magnetic resonance (CMR) is the preferred imaging technique, it may not be applicable in the acute AM phase. Our case report highlights the usefulness and diagnostic accuracy of echocardiographic examination. In the first 2-dimensional echocardiography, the focal echobright was presented. A reduced value of global longitudinal strain, and regional disturbances of segmental myocardial strain, both longitudinal and circumferential, in the epicardial layer, were detected with a good correlation with CMR results.