The implantable cardioverter defibrillator (ICD) has become the standard treatment for patients at risk for sudden cardiac death. When it detects a life-threatening arrhythmia the ICD delivers a shock to normalize cardiac activity. While medically effective, up to 88% of patients who receive an ICD experience some form of anxiety symptoms. Potentially relevant factors that have been implicated in the development and maintenance of anxiety include fear of anxiety (i.e., anxiety sensitivity; AS), fear of pain (FP), and fear of being shocked (i.e., shock anxiety; SA) as well as avoidant coping (i.e., attempts to regulate fear and prevent anxiety by reducing the probability of exposure). The purpose of this longitudinal study was to test a cognitive-behavioral model in which effects of specific fears on anxiety severity in ICD patients are magnified by avoidant coping behavior. Forty-two ICD recipients completed the Anxiety Sensitivity Index, the Florida Shock Anxiety Scale, the Pain Anxiety Symptoms Scale, an Avoidant Coping Scale, and the Beck Anxiety Inventory, at the time of an electrophysiology visit and at a 12-week follow up. As hypothesized, there was a significant interaction between AS and avoidant coping, as well as between FP and avoidant coping, such that avoidant coping strengthened associations linking higher baseline AS and FP to increased 12-week anxiety severity. A significant interaction between SA and avoidant coping was not of the predicted form. Overall, these findings help to clarify the role of specific fears and avoidant coping in the maintenance of anxiety and may facilitate the tailoring of nonpharmacologic interventions designed to controvert the exacerbation of anxiety among ICD patients.
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Psychology
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Rutgers University Electronic Theses and Dissertations
Rutgers University. Graduate School - New Brunswick
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