Conclusion: The supraventricular tachycardia attack were more common in female more than male patients, the likehood of having AVNRT was higher than the AVRT attacks, the mean age of AVNRT and AVRT attack were the elderly patients more than the young patients, the rate of atrial fibrilation-flutter was relatively common in the SVT attacks and in elderly patients group, WPW syndrome was associated with the SVT attacks in clinical, and ECG of out of attacks in the elderly group having AVRT attack was higher than the young patients group.