Evaluation of Cardioprotective Effect of 3,5,3′-Tri-iodo-L-thyronine in Isoproterenol-Induced Cardiotoxicity

Table 1

Effect of T₃ on electrocardiogram parameters in ISO-induced cardiac changes.

Group/Dose	(I)/Vehicle control	(II)/ISO (100 mg/kg)	(III)/ISO + T3 (3 μg/kg)	(IV)/T3 (3 μg/kg)
QT interval (ms)	93.33 ± 5.77	146.67 ± 15.28**	100.00 ± 14.52^##	86.33 ± 3.51^##
QRS interval (ms)	40.00 ± 4.15	30.33 ± 3.55*	43.33 ± 5.77	39.00 ± 3.61

Values are presented as Mean ± SD, 𝑛=5, *𝑃<0.05 versus control, **𝑃<0.01 versus control, ^#𝑃<0.05 versus ISO (100 mg/kg), ^##𝑃<0.01 versus ISO (100 mg/kg), SD: Standard Deviation, ECG parameters are expressed in milisecond.