Dear Sir / Madam
Thanks for writing to us.
1. Inappropriate sinus tachycardia
(IST) is something which is not very well understood by cardiology fraternity. Generally we look for the secondary causes of sinus acceleration like anxiety, coffee , tea, alcohol, tobacco, cocaine, hyperthyroid state, anemia, pain or any stress.
2. Drug therapy is indicated only in symptomatic patients. Drug therapy is not very effective in all the patients. Ivabradine
(coralan) has been found to be most effective. Thereafter beta-blockers (inderal or propanolol) are indicated. It will be better than tambocor
for you because you have migraine
also and you find your BP on higher side too. Discuss with your Cardiologist before you start a new drug.
3. If your diagnosis has been made carefully and you surely do not have POTS (a syndrome where heart rate
increases when you stand) & you have debilitating symptoms because if IST, ablation of abnormal focus is another option (but only after discussing with your cardiologist.)
Feel free to discuss more.