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CASE REPORT
Year : 2016  |  Volume : 5  |  Issue : 2  |  Page : 9

Automatic Mode Switch (AMS) causes less synchronization


1 Cardiology Department, Shiraz University of Medical Science, Shiraz, IR Iran
2 Cardiovascular Research Center, Cardiology Department, Shiraz University of Medical Science, Shiraz, IR Iran

Correspondence Address:
Mohammadhossein Nikoo
Cardiovascular Research Center, Cardiology Department, Shiraz University of Medical Science, Shiraz
IR Iran
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Source of Support: None, Conflict of Interest: None


DOI: 10.5812/cardiovascmed.31604

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Introduction: Cardiac resynchronization devices are part of modern heart failure management. After implantation, we analyze and program devices in an attempt to ensure their success. Biventricular pacing should be 98% or more for the lowest mortality and best symptom improvement. Case Presentation: In this case series, we present a combination of far field sensing and automatic mode switching (AMS) in six patients. It is found that this combination causes ventricular sensing (VS) episodes with wide QRS and no synchronization. We turn off the AMS and alleviate the problem. Conclusions: Switching AMS off may increase biventricular pacing in some patients.


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