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  • Title: Sensors for rate-adaptive pacing: How they work, strengths, and limitations.
    Author: Trohman RG, Huang HD, Larsen T, Krishnan K, Sharma PS.
    Journal: J Cardiovasc Electrophysiol; 2020 Nov; 31(11):3009-3027. PubMed ID: 32877004.
    Abstract:
    Chronotropic incompetence is the inability of the sinus node to increase heart rate commensurate with increased metabolic demand. Cardiac pacing alone may be insufficient to address exercise intolerance, fatigue, dyspnea on exertion, and other symptoms of chronotropic incompetence. Rate-responsive (adaptive) pacing employs sensors to detect physical or physiological indices and mimic the response of the normal sinus node. This review describes the development, strengths, and limitations of a variety of sensors that have been employed to address chronotropic incompetence. A mini-tutorial on programming rate-adaptive parameters is included along with emphasis that patients' lifestyles and underlying medical conditions require careful consideration. In addition, special sensor applications used to respond prophylactically to physiologic signals are detailed and an in-depth discussion of sensors as a potential aid in heart failure management is provided.
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