Global longitudinal strain (GLS) at rest (R= −0.42, P= 0.011) and during exercise (R= −0.36, P= 0.034) correlated with postoperative LVEF. When normalized for LV end-systolic diameter, GLS during exercise was more closely correlated with postoperative LVEF and was its best predictor based on a multivariate linear regression model. At a cut-off of −5.7%/cm, sensitivity was 0.83, specificity 0.70, negative predictive value 0.64, and positive predictive value 0.86 for predicting a 6-month postoperative LVEF of <50%.
Conclusion In patients undergoing surgery for severe organic MR, GLS normalized for LV end-systolic diameter at submaximal exercise may be used as a predictor of postoperative LVEF.
O Strain longitudinal pode ajudar no paciente com refluxo mitral significativo.
É inacreditável a evolução no número de publicações envolvendo o Strain.