It was reported that a patient underwent a supraventricular tachycardia procedure with a carto 3 system and a noise issue occurred.When the 4mm navistar catheter was connected to the carto 3 system, an eeprom error was seen.The electrocardiogram (ecg) signals became noisy and the catheter would not display.The user tried a new cable and catheter without resolution.The user then reseated the catheter within the map port of the patient interface unit and the issue resolved.The noise was noticed on all ecg channels including intracardiac and body service as well as the anesthesia monitor, carto 3 system and the recording system.There was no ecg signal available for the physician to monitor the patient's heart rhythm.Therefore this event has been assessed as mdr reportable because lack of monitoring of cardiac rhythm while devices are intra-cardiac may lead to potential patient injury.The other issues experienced during the case, eeprom error and catheter visualization issue are not mdr reportable because the potential that it could cause or contribute to a death, serious injury, or other significant adverse event is remote.The awareness date for this record is march 28, 2016 because additional information was received that there was no ecg signal available to monitor the patient's heart rhythm.
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