Boston scientific received information that this cardiac resynchronization therapy pacemaker (crt-p) is being used as an external temporary pacer.Initially, the patient had a temporary lead implanted in the right groin and connected to this external crt-p, but loss of capture was observed.Therefore a different temporary lead was implanted in the right internal jugular and connected to this crt-p.The lead safety switch was programmed on and the lower rate limit was set to 80 beats per minute (bpm).The physician then called the representative to change the lower rate limit from 80 bpm to 50 bpm to see if the patient had an intrinsic rhythm present.It was determined the patient did not have an intrinsic rhythm at 50 bpm.The decision was made to program the lead safety switch off and the sensitivity was changed to 10 mv.The duration of loss of capture remains unknown.Both temporary leads were non-boston scientific leads.At this time, this crt-p remains in service as an external temporary pacer, and there were no adverse patient effects reported.This device was implanted in a different patient previously, and is now being used as an external temporary pacer in this patient.The current patient's information, however; remains unavailable.
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