Why the study?
Does mode switching ON improve cardiovascular symptoms, quality of life, or clinical outcomes compared to mode switching OFF in patients with sinus node dysfunction receiving DDDR pacemakers?
Does mode switching ON improve cardiovascular symptoms, quality of life, or clinical outcomes compared to mode switching OFF in patients with sinus node dysfunction receiving DDDR pacemakers?
Mode switching in DDDR pacemakers for sinus node dysfunction reduces the need for reprogramming due to rapid ventricular pacing but does not significantly improve cardiovascular symptoms or quality of life.
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Supports mode switching ON to minimize reprogramming in DDDR pacemakers; challenges presumed symptom or QOL benefits in sinus node dysfunction.
Sweeney et al. (2004) studied this question.
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