Is Superior to Ventricular Pacing.
or ventricular backup pacing in patients with an implantable defibrillator: the Dual Chamber and VVI Implantable Defibrillator (DAVID) Trial.
Indications of dual-chamber pacing
were not selected a priori for enrollment.
Murphy, "Carotid sinus hypersensitivity: beneficial effects of dual-chamber pacing
," The American Journal of Cardiology, vol.
They are not suitable for those who would benefit from dual-chamber pacing
, which more closely mimics normal electrical activity in the heart and may have advantages in active individuals or in the setting of heart muscle dysfunction.
And if they do not get the TAVI, they would probably die within one or two years." Still he suggested "that dual-chamber pacing
that resynchronizes the heart might be better for such patients,"
Implant techniques, single- and dual-chamber pacing
, rate-responsive pacing, follow-up, troubleshooting, and advanced feature are some of the chapter topics.
Rather than a single transvenous electrode, a dual-chamber pacing
system incorporates two electrodes which sense and pace the right atrium and ventricle respectively mimicking the natural sequence of chamber contraction.
What is known is that, at least initially, only patients who require pacing in one chamber of the heart will be candidates for the leadless pacemakers--many patients needing pacemakers today require dual-chamber pacing
. Still, experts anticipate that, as the technology advances, the leadless devices will grow to handle multi-chamber pacing and other functions.
[sup] However, rate adaptive pacing, the main therapy for chronotropic incompetence, [sup] wasn't proved to be clinically beneficial in improving the functional status or quality of life of patients with a bradycardia indication for dual-chamber pacing
in large trials, [sup], though some small-sample studies reported positive results.
Single-chamber versus dual-chamber pacing
for high-grade atrioventricular block.