The Impact of Gratitude on Biology and Behavior in Persons With Heart Disease

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

212 participants

Study Classification

OBSERVATIONAL

Study Start Date

2012-09-30

Study Completion Date

2014-08-31

Brief Summary

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Overall, the investigators aim to recruit 150 subjects during their hospitalization for an acute coronary syndrome (ACS). At two weeks post-ACS, the investigators will assess levels of gratitude and optimism, draw blood for baseline levels of biomarkers, gather baseline information about health behaviors critical to cardiac health, and obtain baseline measures of symptoms and function. Finally, the investigators will repeat assessments of biomarkers, behavior, and function at 6 months to allow us to assess the impact of gratitude and optimism on these outcomes; the investigators will also have an objective measure of physical activity via accelerometer (step counter) at 6 months.

Specific Aim #1: To prospectively assess the association between gratitude/optimism 2 weeks after ACS and improvement in biological markers of cardiac health at 6 months post-ACS.

Hypothesis: Higher levels of gratitude/optimism at 2 weeks will be associated with greater reductions in levels of biomarkers associated with negative heart health between 2 weeks and 6 months.

Specific Aim #2 (\*primary aim\*): To assess the association between gratitude/optimism 2 weeks after ACS and subsequent adherence to health behaviors known to improve post-ACS prognosis at 6 months.

Hypothesis: Higher levels of gratitude/optimism at 2 weeks will be associated with greater amounts of physical activity (measured by accelerometer) at 6 months (primary study outcome measure), and greater improvements in self-reported adherence to health behaviors (activity, diet, and medication) between 2 weeks and 6 months.

Specific Aim #3: To assess the association between gratitude/optimism at 2 weeks and non-elective cardiac rehospitalizations (and other clinical outcomes) at 6 months.

Hypothesis: Higher levels of gratitude/optimism at 2 weeks will be associated with greater improvements in depression, health-related quality of life, function, cardiac symptoms, and possibly readmissions, between 2 weeks and 6 months.

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Detailed Description

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Enrollment Patients will be enrolled during their acute admission for an ACS. At this visit, patients will be introduced to the study and given a follow-up study visit at the MGH Heart Center 2 weeks following their ACS. We will also ask them about their physical activity levels in the time before their ACS.

On the date of enrollment, study staff will estimate baseline physical activity using the Stanford 7-day Physical Activity Recall Scale (PAR). Additionally, contact information (address, phone number, email) will be obtained from the subject along with his/her social security number in order to provide a check for compensation.

Initial Evaluation:

After enrollment, subjects will have a visit 2 weeks post-ACS in the MGH Heart Center. Several procedures will occur during this visit.

1. Baseline assessments. Subjects will complete self-report measures to assess the following:

* Gratitude will be assessed using the Gratitude Questionnaire-6 (GQ-6). The GQ-6 is a brief, validated six-item measure of dispositional gratitude.
* Optimism will be measured using the Life Orientation Test-Revised (LOT-R), a short 6-item rating scale.
* Baseline adherence to health behaviors will be measured using items from the MOS Specific Adherence Scale (SAS) that ask about diet and medication adherence.
* Baseline medical and functional status will be measured using the MOS Short Form-12 (SF-12). The SF-12 is a cardiac symptom scale adapted from the Women and Ischemia Syndrome Evaluation (WISE) study, and the Duke Activity Symptom Index (DASI) for function.
* Depression will be measured using the Patient Health Questionnaire-9,which is a 9-item scale.
* Anxiety will be measured using the anxiety subscale of the Hospital Anxiety and Depression Scale (HADS-A). The HADS-A is a 7-item scale.
2. Biomarker collection. Subjects will also have a single blood draw (2 tablespoons or 10 ml/cc) for the following biological factors that are important to cardiac health and may be modified by psychological states. A total of 15 ml/cc of blood will be drawn.
3. Chart review for baseline variables. We will review subjects electronic medical record to gather data on sociodemographic variables (age, gender), medical information (severity of initial ACS), and overall cardiac function.

3 month phone call:

Three months after enrolling in the study, we will call participants to help them test the accelerometer. We will also schedule their 6-month study visit and repeat all self-report measures. Finally, we will remind them to wear the accelerometer for 14 days prior to their 6-month visit and record their physical activity each day for 14 days. We will schedule this call at a convenient time for the participant (on a weekday, weeknight, or weekend).

Provision of accelerometer:

One month before their six-month visit, we will mail the Pebble uniaxial accelerometer (Fitlinxx, Shelton, CT) to the participant, along with an instruction sheet and technical support contact information. We will contact subjects shortly after to make sure the accelerometer arrived, and we will have them wear the devices for several days to ensure that there are no troubles with fit, operation, or remembering to use the devices.

6 month assessment:

Finally, subjects will return to the MGH Heart Center Clinic 6 months post-ACS. At this assessment, we will repeat all self-report measures, collect accelerometers, draw blood (2 tablespoons or 10 ml/cc) for biomarkers, and inquire about readmissions since enrollment. We will gather additional information about readmissions from participants' physicians and medical records for this exploratory outcome.

Conditions

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Myocardial Infarction Unstable Angina

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Study Groups

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Enrolling by invitation

No interventions assigned to this group

Eligibility Criteria

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Inclusion Criteria

* Adult patients admitted to cardiac units at MGH with a primary admission diagnosis of ACS (eligible patients must meet World Health Organization criteria for myocardial infarction or criteria for unstable angina \[new-onset angina within 2 months, exacerbation of previous angina with rest pain or with minimal exercise, or angina within 2 weeks of MI\]). ACS diagnosis will be clarified with the inpatient care team and adjudicated by co-investigator cardiologist Dr. Januzzi as needed.

Exclusion Criteria

* 'Periprocedural' ACS (ACS that occurs in the setting of another medical procedure; such events may occur in the absence of structural heart disease and likely represent a different pathophysiology, course and prognosis than those with 'endogenous' ACS).
* Conditions likely to alter biomarkers of interest (renal failure requiring hemodialysis, inflammatory disease \[e.g., systemic lupus erythematosus\])
* Condition likely to lead to death within 6 months (e.g. cancer).
* Inability to complete physical activity due to unrelated medical condition (e.g., severe arthritis)
* Inability to complete self-report evaluations due to inability to speak or write in English or due to cognitive deficits (assessed using an established six-item screen).

Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No