Based on the information received, the cause of the reported arrhythmia was user related.The device history record was reviewed to ensure that each manufacturing and inspection operation was performed.Further information provided suggested the event occurred due to the settings being incorrectly chosen during the procedure.The sync check box was selected in the user settings, when it was thought to be unselected.According to the ifu the system was not able to pace because "with the sync function on, each stimulus will be produced after a trigger is detected".
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During a procedure, ventricular pacing was not delivered following adenosine administration.An error message was displayed on the windows "no sense interval - turn sync off".The sync was already turned off and pacing was not able to be completed.After 30 second of asystole and attempting to pace, the windows error was closed and pacing continued.The procedure was completed and the patient was stable.It was indicated the event was user error and there were no performance issues with any abbott device.
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