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Inappropriate rate response in a leadless pacemaker due to automatic rate profile optimization
Chu-Pak Lau1, Kathy Lai-Fun Lee1, Hung-Fat Tse1,2,3
1Cardiology Division, Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong SAR, China.
Abstract:
A three-axis accelerometer sensor is incorporated in a leadless pacemaker (MicraTM , MedtronicInc ) for rate adaptation. Three sensor setpoints at lower rate (LR), activity of daily living rate (ADLR), and upper rate (UR) are used to convert detected acceleration to a desired rate response. We describe inappropriate rate acceleration at rest and during chest physiotherapy in a sedentary elderly patient with leadless pacemaker. The underlying mechanism and various programming options are discussed.
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