Which cardiac findings are characteristic of atrial flutter (AFL)?

Updated: Nov 18, 2019
  • Author: Lawrence Rosenthal, MD, PhD, FACC, FHRS; Chief Editor: Jeffrey N Rottman, MD  more...
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Answer

The heart rate is often approximately 150 beats/min because of a 2:1 AV block. (This depends on the atrial firing rate, which may be influenced by medications as well as by intrinsic cardiac factors.) The venous pulsations may be more rapid at the rate of the flutter. Because the AV block may be variable, the pulse may be regular or slightly irregular. Hypotension is possible, but normal blood pressure is more commonly observed.


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