Unusual cause of desynchronization in a cardiac resynchronization device.
This report describes a new cause of desynchronization encountered in a cardiac resynchronization device functioning in the VVIR mode. Left ventricular stimulation was inhibited when the sensor-driven rate exceeded the programmed left ventricular (LV) maximum trigger rate. With these devices, it is important to program the LV maximum trigger interval (essentially equivalent to a LV upper interval) to a value equal or faster than the sensor-driven upper rate.
Florida Heart Rhythm Institute, Tampa General Circle, 33606, Tampa, FL, USA. ssbarold@aol.com
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Barold
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Steiner
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Kucher
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Stroobandt
D000368:Aged; D001145:Arrhythmias, Cardiac / Q000209:etiology* / Q000517:prevention & control*; D058406:Cardiac Resynchronization Therapy / Q000009:adverse effects*; D058409:Cardiac Resynchronization Therapy Devices / Q000009:adverse effects*; D004868:Equipment Failure; D006801:Humans; D008297:Male