Which beta-blockers are used for coronary computed tomography angiography (CCTA)?

Updated: Dec 21, 2017
  • Author: Eugene C Lin, MD; Chief Editor: Eugene C Lin, MD  more...
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Answer

Answer

Metoprolol is a frequently used beta blocker for coronary CT angiography (CCTA). The effects of an oral dose are seen within 1 hour after administration, with peak plasma concentration at 90 minutes. [60] IV-push metoprolol has a peak effect 5-10 minutes after administration.

There are many different protocols for metoprolol administration. An oral dose of 50-100 mg can be administered 60-90 minutes before the study. [60, 61] If this does not lower the heart rate to the desired level, 5-mg doses of IV metoprolol can be administered at 3- to 5-minute intervals, up to a total dose of 15-30 mg. [60, 61]

Atenolol [61] and esmolol [62] have also been successfully used.


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