Obstructive - Nonobstructive hypertrophic cardiomyopathy: differences and predictors.

In multivariate and correlation analyses, ST segment depression ( = 0.29), QT prolongation ( = 0.34), and SAM ( = 0.62) are found as predictors for obstruction (all values < .05). Our study will guide future studies since it has detailed ECG and ECHO comparisons of Obs-HCM and Nonobs-HCM patients over 18 are made.