Boston scientific received information that this field clinical representative contacted boston scientific technical services.The technical service consultant was informed that this patient was presented back to the electrophysiology laboratory on (b)(6) 2019 for a scheduled device replacement procedure due to normal battery depletion.The field clinical representative reported that the chronic device was successfully interrogated prior to the start of the replacement procedure.At that time, the patient was stable and had an underlying rhythm.Device function was normal with stable sensing, impedance and thresholds.The pocket was opened and the psa cables were connected to the left ventricular lead.Diagnostic testing of the left ventricular lead was performed which confirmed that the lead was in a stable position.The left ventricular lead was paced asynchronously.The chronic leads were inserted into the ports of the replacement device.It was confirmed that the replacement device was successfully connected to the leads following stable lead diagnostic measurements.During pocket closure, the patient respiratory status started to decline associated with a drop in blood pressure.Emergency intervention including cardiopulmonary resuscitation was initiated.After approximately 30 minutes, the patient could not be stabilized and the patient was pronounced deceased.
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