I am on 300mg cardizem for MATs that are symptomatic (SOB). I was on 180mg, but increased due to excessive MATs again. If this dose doesn t work, what are the next steps. This is all recent (3wks) with thorough work up and no underlying cause found.
Hello.... As You are suffering from Multifocal Atrial Tachycardia (MAT). And you are taking Tab Diltiazem and that is not responding. Ideally. Recent guideline says that the treatment of choice for MAT is Selective beta blocker that is Metoprolol then Calcium channel blocker that is Diltiazem. So in my opinion, kindly start with Tab Metoprolol extended release 50 mg once a day and see the response then gradually increase the dose up to 100-200 mg or simultaneously take Tab Diltiazem along with Metoprolol. Thank You