The same protocol was repeated with doses of 15 and
25 mg/kg twice daily. Hexagonal leads were used for the
obtaining of ECGs and lead 2 (Long II) was studied for
ECG changes. All ECGs were checked for P amplitude
and duration, QRS duration, R amplitude, QT interval, PR
interval, and heart rates. All data were compared with the
control and between groups’ ECGs. Finally, the given data
were examined by one-way ANOVA and Student’s t-test
by SPSS 13.