IMPORTANCE Depression and inadequate self-care are common and interrelated problems that increase the risks of hospitalization and mortality in patients with heart failure (HF).OBJECTIVE To determine the efficacy of an integrative cognitive behavior therapy (CBT) intervention for depression and HF self-care. DESIGN, SETTING, AND PARTICIPANTS Randomized clinical trial with single-blind outcome assessments. Eligible patients were enrolled at Washington University Medical Center in St Louis between January 4, 2010, and June 28, 2013. The primary data analyses were conducted in February 2015. The participants were 158 outpatients in New York Heart Association Class I, II, and III heart failure with comorbid major depression. INTERVENTIONS Cognitive behavior therapy delivered by experienced therapists plus usual care (UC), or UC alone. Usual care was enhanced in both groups with a structured HF education program delivered by a cardiac nurse.
MAIN OUTCOMES AND MEASURESThe primary outcome was severity of depression at 6 months as measured by the Beck Depression Inventory. The Self-Care of Heart Failure Index Confidence and Maintenance subscales were coprimary outcomes. Secondary outcomes included measures of anxiety, depression, physical functioning, fatigue, social roles and activities, and quality of life. Hospitalizations and deaths were exploratory outcomes.
RESULTSOne hundred fifty-eight patients were randomized to UC (n = 79) or CBT (n = 79). Within each arm, 26 (33%) of the patients were taking an antidepressant at baseline. One hundred thirty-two (84%) of the participants completed the 6-month posttreatment assessments; 60 (76%) of the UC and 58 (73%) of the CBT participants completed every follow-up assessment (P = .88). Six-month depression scores were lower in the CBT than the UC arm on the Beck Depression Inventory (
Context
There has been little research on the treatment of depression after coronary artery bypass surgery.
Objective
To test the efficacy of 2 nonpharmacological interventions for depression after coronary artery bypass surgery compared with usual care.
Design
A 12-week, randomized, single-blind clinical trial with outcome evaluations at 3, 6, and 9 months.
Setting
Outpatient research clinic at Washington University School of Medicine, St Louis, Missouri.
Patients
One hundred twenty-three patients who met the DSM-IV criteria for major or minor depression within 1 year after surgery.
Intervention
Twelve weeks of cognitive behavior therapy or supportive stress management. Approximately half of the participants were taking nonstudy antidepressant medications.
Main Outcome Measure
Remission of depression, defined as a score of less than 7 on the 17-item Hamilton Rating Scale for Depression.
Results
Remission of depression occurred by 3 months in a higher proportion of patients in the cognitive behavior therapy (71%) and supportive stress-management (57%) arms than in the usual care group(33%) (
normalχ22=12.22, P = .002). Covariate-adjusted Hamilton scores were lower in the cognitive behavior therapy (mean [standard error], 5.5 [1.0]) and the supportive stress-management (7.8 [1.0]) arms than in the usual care arm (10.7 [1.0]) at 3 months. The differences narrowed at 6 months, but the remission rates differed again at 9 months (73%, 57%, and 35%, respectively;
normalχ22=12.02, P=.003). Cognitive behavior therapy was superior to usual care at most points on secondary measures of depression, anxiety, hopelessness, stress, and quality of life. Supportive stress management was superior to usual care only on some of the measures.
Conclusions
Both cognitive behavior therapy and supportive stress management are efficacious for treating depression after coronary artery bypass surgery, relative to usual care. Cognitive behavior therapy had greater and more durable effects than supportive stress management on depression and several secondary psychological outcomes.
Trial Registration
clinicaltrials.gov Identifier: NCT00042198
The finding that fibrinogen and IL-6 are moderately related to HRV suggests a link between these factors in depressed CHD patients. The relationship between ANS function and inflammatory and coagulant processes should be investigated in larger mechanistic studies of depression and cardiac morbidity and mortality.
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