Clinical Applications of Pacemakers in Patients with Bradycardia and Other Specific Conditions
نویسندگان
چکیده
This chapter explains the foundations for permanent pacing and proposes a rational and critical approach about the indications for stimulation which are supported by current scientific evidence. We also review stimulation mode selection in different clinical scenarios, technical aspects of implantation, and outline a follow-up program for patients who carry stimulation devices. We consider convenient mentioning the initials used to designate the stimulation mode for pacemakers. The first letter refers to the paced chamber (could be 0=none, A=atrium, V=ventricle, D=dual), the second letter refers to the sensed chamber (could be 0=none, A=atrium, V=ventricle, D=dual), and the third letter to the type of response the pacemaker will have when detecting an intrinsic beat (could be 0=none, I=inhibitory, T=trigger, D=dual). There is a forth letter which confirms the presence of a sensor which modulates heart rate in to response physical activity (R=rate response). Thus, a VVI mode pacemaker paces and senses only the right ventricle, and it is inhibited if sensing an intrinsic beat. A DDD pacemaker paces and senses both chambers (right atrium and ventricle) and both leads can be inhibited by an intrinsic beat.
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