Coronary artery disease and depression
Michael J Zellweger1, Remo H Osterwalder, Wolf Langewitz
1Cardiology Department, University Hospital, University of Basel, Petersgraben 4, CH-4031 Basel, Switzerland. mzellweger@uhbs.ch
Insights
Coronary artery disease (CAD) and depression are common, impacting quality of life and healthcare costs. While depression treatment improves patient well-being, its effect on cardiovascular prognosis requires further large-scale clinical trials.
Area of Science:
- Cardiology
- Psychiatry
- Pharmacology
Background:
- Coronary artery disease (CAD) and depression are highly prevalent, significantly reducing patient quality of life and imposing economic burdens.
- Depression is linked to CAD development and poorer outcomes due to factors like poor medication adherence, endothelial dysfunction, and altered heart rate variability.
- Emerging evidence suggests depression is an independent risk factor for cardiac events in both general and established CAD populations, especially post-myocardial infarction.
Purpose of the Study:
- To review the relationship between depression and coronary artery disease (CAD).
- To evaluate the impact of depression treatment on cardiovascular prognosis.
- To discuss pharmacological options for treating depression in patients with comorbid CAD.
Main Methods:
- Literature review of studies investigating the link between depression and CAD.
- Analysis of evidence regarding the effect of depression treatment on cardiovascular outcomes.
- Assessment of antidepressant medication safety and efficacy in CAD patients.
Main Results:
- Depression treatment improves quality of life but has not definitively improved cardiovascular prognosis in CAD patients.
- Selective serotonin reuptake inhibitors (SSRIs) are generally preferred over tricyclic antidepressants for comorbid CAD due to better tolerability and fewer cardiovascular side effects.
- Hypericum perforatum (St. John's wort) may interact dangerously with cardioactive drugs, necessitating caution.
Conclusions:
- Depression is an independent risk factor for cardiac events, underscoring the need for integrated care.
- While depression treatment enhances quality of life, its impact on cardiovascular prognosis remains uncertain, warranting large-scale clinical trials.
- Careful selection of antidepressants, favoring SSRIs and cautioning against St. John's wort interactions, is crucial for managing comorbid depression in CAD patients.
Abstract:
Coronary artery disease (CAD) as well as depression are both highly prevalent diseases. Both cause a significant decrease in quality of life for the patient and impose a significant economic burden on society. There are several factors that seem to link depression with the development of CAD and with a worse outcome in patients with established CAD: worse adherence to prescribed medication and life style modifications in depressive patients, as well as higher rates in abnormal platelet function, endothelial dysfunction and lowered heart rate variability. The evidence is growing that depression per se is an independent risk factor for cardiac events in a patient population without known CAD and also in patients with established diagnosis of CAD, particularly after myocardial infarction. Treatment of depression has been shown to improve patients' quality of life. However, it did not improve cardiovascular prognosis in depressed patients even though there is open discussion about the trend to better outcome in treated patients. Large scale clinical trials are needed to answer this question. Selective serotonin reuptake inhibitors seem to be preferable to tricyclic antidepressants for treatment of depressive patients with comorbid CAD because of their good tolerability and absence of significant cardiovascular side effects. Hypericum perforatum (St. John's wort), an increasingly used herbal antidepressant drug should be used with caution due to severe and possibly dangerous interaction with cardioactive drugs.
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