A 73-year-old woman presented on March 22, 2005, for routine evaluation of her VVIR (ventricular ... A rhythm strip showed frequent failure to sense and total failure to capture by the pacemaker ...

P-wave synchronous ventricular pacing (A-sensed V-paced), pseudo second-degree AV block due to failure of atrial sensing. There is a regular rhythm at a rate of 130 beats/min. The QRS complex has ...

151; -- Question: What is a biventricular pacemaker or cardiac resynchronization therapy (also called a CRT device), how is it implanted for heart failure ... irregular heart rhythm that is ...