Statistical analysis:
Statistical analysis was approved with the SPSS statistical package
(Version 25; SPSS Inc., Chicago, IL, USA). Quantitative data were stated
as mean ± standard deviation (SD), and Qualitative data were displayed
using numbers and percentages. The Kolmogorov-Smirnov test was used to
confirm the normality of distribution. Comparative data between the two
groups, the Senning patients and the controls were assessed using the
unpaired t-test. Changes in hemodynamic and echocardiographic parameters
between rest and dobutamine stress were compared using a paired Student
t-test. A P-value < 0.05 was considered statistically
significant at a confidence interval of 95%.