During a right-sided atrial mapping procedure, when the catheter was removed from the patient a blood clot was noted on the coupling frame.The catheter irrigation ports performed as expected.The activated clotting time was not monitored and heparin was not administered, however, after the blood clot was noted, a bolus of heparin was administered and the activated clotting time was checked for the remainder of the case, which remained greater than 300.The procedure was still completed and there were no adverse patient consequences.
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