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==References==
==References==
{{Reflist|2}}
{{Reflist|2}}
[[Category:Cardiology]]
[[Category:Electrophysiology]]
[[Category:Arrhythmia]]

Latest revision as of 21:32, 20 August 2013

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

Sensor induced at tachycardia occurs when limb movement during exercise, rapid breathing or acidosis causes the sensor of a modern pacemaker to fire at an inappropriately rapid rate.

Pathophysiology

There have been advances in the technology of modern pacemakers such that these pacemakers can increase the heart rate in response to metabolic demands such as acidemia or hypercapnea as well as physiologic stimuli such as exercise or tachypnea. Sensor induced tachycardia occurs when these pacemaker sensors misinterpret stimuli and misfire.

Causes

Sensor induced tachycardia occurs when these pacemaker sensors misinterpret stimuli and misfire. Stimuli that may cause the pacemaker to misfire include the following:

Differential Diagnosis

Sensor induced tachycardia must be differentiated from pacemaker mediated tachycardia. The rate associated with pacemaker mediated tachycardia is usually slower at around 120 to 130 beats per minute while the heart rate associated with sensor induced tachycardia is more rapid at a rate of 162 180 beats per minute.

Diagnosis

Electrocardiogram

The ventricular rate is at the upper limit of the pacemakers range at 162 180 bpm.

Treatment

Placement of the magnet on the patient will terminate the tachycardia.

References