Case 115: A 61 Year-Old Woman in the Defibrillator Clinic
A 61 year old woman with a longstanding history of non-ischemic cardiomyopathy is seen in defibrillator clinic for routine follow-up. She states that she has been somewhat more short of breath in the last several weeks.
AV sequential pacing with adequate atrial sensing but no atrial capture, normal ventricular capture
Comment: Boxed “P” indicates underlying sinus rhythm P-waves and boxed “AP” indicates atrial pacing spikes which are not followed by a P waves, thus confirming loss of atrial capture. Third and 8th paced QRS complexes occur early after a sensed P-wave confirming adequate atrial sensing.