Clinical trial NCT00627263: Stress Reduction to Reduce Risk for Arrhythmia in ICD Patients (The RISTA Study)
Official title: Reducing Vulnerability to ICD Shock Treated Ventricular Arrhythmias
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Arrhythmias, Cardiac
Keywords: ICD
Cardiac Arrhythmia
Arrhythmia
Stress
Anger
Lead sponsor: Yale University
Sponsor class: OTHER
Collaborators: name: National Heart, Lung, and Blood Institute (NHLBI)
First posted: 2008-03-03
Enrollment: 314
Sex: ALL
Minimum age (years): 21
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: PREVENTION

Brief summary: An implantable cardioverter defibrillator (ICD) is a small device that is implanted in the chest and uses electrical shocks to control arrhythmias, which are abnormal heart rhythms. Arrhythmias can be caused by many factors, including stress and anger. This study will evaluate the use of a stress reduction treatment (SRT) program aimed at reducing the occurrence of arrhythmias that require treatment with an ICD shock.

Detailed description: An ICD is a device designed to quickly detect a life-threatening, rapid heartbeat. Through a process called defibrillation, the ICD tries to convert an abnormal heart rhythm back to normal by delivering an electrical shock to the heart. The ICD continuously monitors heartbeats to ensure that they are normal, and it only delivers a shock to the heart when it senses a life-threatening arrhythmia. Because of the recent funding approval by Medicaid, it is now estimated that more than 500,000 people will receive ICDs annually. Although ICDs are life-saving medical devices, some people may experience anxiety, depression, and impaired quality of life as a result of the repeated ICD shocks. Additionally, increased mental and emotional stress and anger may increase the likelihood of experiencing more arrhythmias requiring an ICD shock. SRT programs that encourage people to manage their emotions may decrease the frequency of arrhythmias. Furthermore, SRT programs have been shown to be successful at reducing other stress-related heart conditions. The purpose of this study is to evaluate the effectiveness of an SRT program at reducing the incidence of ICD shock-treated arrhythmias among people with newly implanted ICDs.

This study will enroll people who have recently received an ICD. Initially, participants will complete questionnaires about mood and attitudes. Next, at a baseline study visit, participants will complete a mental stress exercise in which they will perform math problems and describe an experience that made them angry. During this exercise, participants will undergo blood pressure measurements, blood collection, and an electrocardiogram (EKG) to measure electrical activity of the heart. Participants will also wear a monitor for 24 hours after the study visit to record heart activity. Participants will then be randomly assigned to either take part in the SRT group and receive usual care or only receive usual care. For 10 weeks, participants in the SRT group will attend 8 group sessions that will focus on learning and applying stress reduction techniques to everyday living. All participants will attend a 3-month follow-up visit for repeat baseline testing. At Months 6, 12, and 24, participants will complete questionnaires during routine doctor's visits or by mail.

Eligibility criteria: Inclusion Criteria:

* Receiving an ICD or currently have an ICD and have recieved appropriated ICD shock therapy in the 6 months before study entry
* Ischemic cardiomyopathy or non-ischemic (dilated) cardiomyopathy
* Fluent in spoken and written English
* Able to participate in the SRT program

Exclusion Criteria:

* Unable to comply with the study or participate in SRT treatment, if assigned
* Incapacitating illness (e.g., stage IV congestive heart failure) that would interfere with study participation
* Life expectancy of less than 2 years (e.g., due to metastatic cancer)
* Uncommon etiologies of arrhythmia (e.g., long QT syndrome, hypertrophic cardiomyopathy, Brugada syndrome)
* Cognitive impairment, based on Mini-Mental Status Exam (MMSE) and educational level. If education level is less than 8th grade, then people with an MMSE score of less than 17 will not be enrolled; if education level is greater than 8th grade, then people with an MMSE score of less than 24 will not be enrolled.

Primary outcomes:
measure: ICD shock-treated ventricular arrhythmia event-free survival
timeFrame: Measured at Month 24
Secondary outcomes:
measure: Laboratory stress-provoked arrhythmogenic changes in the heart rhythm
timeFrame: Measured at Baseline and Month 6
measure: 24-hour heart rate variability
timeFrame: Measured at Baseline and Month 6
measure: Quality of life
timeFrame: Measured at Month 24
Other outcomes:
Locations:
city: New Haven
country: United States
facility: Yale University Medical School
state: Connecticut
Study officials:
affiliation: Yale University
name: Matthew M. Burg, PhD
role: PRINCIPAL_INVESTIGATOR
References:
citation: Donahue RG, Lampert R, Dornelas E, Clemow L, Burg MM; RISTA Investigators. Rationale and design of a randomized clinical trial comparing stress reduction treatment to usual cardiac care: the Reducing Vulnerability to Implantable Cardioverter Defibrillator Shock-Treated Ventricular Arrhythmias (RISTA) trial. Psychosom Med. 2010 Feb;72(2):172-7. doi: 10.1097/PSY.0b013e3181c932d4. Epub 2009 Dec 22.