The heart has
its electrical conducting system that controls the rate and the
rhythm. Electrical signals or impulses originate from the
sinoatrial (SA) node and travel down an electrical pathway into the
ventricles causing an organized atrial-ventricular contraction. The
point of where electrical signals/impulses originated is known as
the natural
heartpacemaker.
The electrical signal must travel down a specific pathway to the
ventricles for the heart to beat properly. However, in some cases,
the sinoatrial nodes may be defected causing the heart to beat too
fast, too slow or irregular. There may have been a blockage in the
heart electrical pathways. If these were ever the cases, a device
might need to the put in place to help regulate the
heart
rateand
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It is implanted
in the right ventricle. Nanostim leadless pacemaker is intended to
be used as a single chamber rate response pacemaker. It is
indicated for patient with significant bradycardia, A-V block or
sinus arrest, chronic atrial fibrillation and severe physical
disability. It is also indicated for patients with chronotropic
incompetence, and for those who would benefit from increased
stimulation rates concurrent with physical activity (St. Judes
Medical,
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Jude Medical,
as the name indicates, the Nanostim leadless pacemaker "does not
need a connector, pacing lead, or pulse generator pocket" (Reddy et
al., 2015). An overview of the device finds a distal
non-retractable, single-turn helix affixes the Nanostim leadless
pacemaker to the endocardium. Near the helix and the external can
of the Nanostim is where sensing, pacing, and communication with
the external programmer occur (Reddy et al., 2014). The pacemakers
proximal end has a feature that enables it to docked to delivery
and retrieval catheters, which provides for repositioning and
retrieval
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