Background: Exercise induced hypertension is a well known problem after surgical repair of coarctation of the aorta (CoA). The cause of this complication is still uncleare. Comparison of two methods: Bruce treadmill stress test (TT) and dobutamine echo stress test (DT) was performed to assess the results of surgical repair of CoA. Methods: Twenty nine patients (pts) ): 20 male and 9 female aged from 4,5 to 18 (mean 12) years were included in the study. All of them had both TT and DT performed with assessment of such parameters as systolic blood pressure (SBP), residual gradient (RG) through the isthmus and the heart rate (HR) at the peak of exercise/dobutamine test. Results: Positive correlation between both tests was documented in case of SBP and RG (see table I - Legend: Mean value and range(in brackets) are presented, r - coefficients of Pearson correlation, NS - difference not significant statistically.) Conclusion: Dobutamine echo stress test is useful for evaluation of the results of surgical repair of CoA in children.