How Depression And Anxiety Affect Patient Adherence

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Author(s): 
Nancy R. Megas MSN, CRNP

   Keicolt-Glaser, et al., reported similar findings in their investigation of wound healing among patients stressed by their roles as caregivers versus a control group. Wound healing took significantly longer in the stressed group than the control (an average of 48.7 days versus 39.3 days) and stressed patients produced less interleukin-1 beta than the control group. Research has shown that interleukin-1 beta regulates the production, release and activation of metalloproteinases, which play an important role in the formation of the connective tissue matrix.11

   Finally, Broadbent studied the effect of stress on surgical wound healing by analyzing wound fluid for the levels of specific cytokines and used regression analysis to quantify the effect of stress on those levels. The study correlated perceived stress with lower levels of IL-1 and MMP-9, indicating that stress impairs the inflammatory responses and matrix degradation processes that one sees in the early stages of normal wound healing.12

   In addition to an increased incidence of anxiety and depression, patients with diabetes also face cognitive and behavioral impairments related to the effect of prolonged hyperglycemia on the brain. Specifically, diabetes impairs hippocampus-dependent memory, perforant path synaptic plasticity and adult neurogenesis.13

   Hyperglycemia triggered excesses of the adrenal glucocorticoids appear to play a role in these adverse effects.14 Impaired hippocampal synaptic plasticity ultimately results in impaired cognitive and behavioral functioning.13,14 Additionally, oxidative stress and reactive oxygen species are increased in patients with diabetes and both reduce the activity of a variety of proteins that are crucial to neuronal homeostasis.15

Strategies For Improving Patient Adherence

   Recognizing these less frequently discussed complications of diabetes suggests several ways we can strengthen our practices. Now more than ever, we must insist on tight glycemic control. No diabetic patient should ever leave our office without at least two staff members asking about the patient’s most recent hemoglobin A1c. Patients failing to achieve the American Diabetes Association (ADA) 2009 target of 7 or lower need to hear how critical it is to lower their levels. Explaining the damaging effect of hyperglycemia on brain function should now be a part of that discussion. One should also refer these patients to diabetes support services and encourage them to pursue new glycemic control strategies with their primary care provider.

   Secondly, as much as we would rather leave it up to primary care, we should screen our patients for depression and anxiety. There is a significant under-detection of these disorders among primary care physicians, and the majority of individuals with depression and anxiety do not access effective treatment.16 When it comes to this under-detection among primary care physicians, many of us may be affected by provider perceived stigma concerning emotional issues and the avoidance of asking questions for fear of harming the relationship.16 The link between emotional illness and poor wound healing behooves us to get past our discomfort and develop a non-threatening, expeditious way to screen for the problem.

   There are several accurate depression and anxiety screening tools available that use a quick self-assessment questionnaire. One can distribute these tools at patient registration and a staff member can score them before one sees the patient.17,18 The Hospital Anxiety and Depression Scale (HADS) and the Generalized Anxiety Disorder (GAD-7) scale are two such tools that have been used effectively in primary care settings.17,18

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Petersays: October 20, 2010 at 10:54 am

Great article! I couldn’t agree more with the concept that too many physicians overlook the possibility of anxiety and depression as major contributing factors in certain symptoms experienced by their patients.

I guess that our education is still too classical in that it doesn’t encourage us to see the clear-cut causality between mental states and physical phenomena. Hopefully, articles such as this will help people realize that even their wounds will heal faster if they nourish a happy and content state of being.

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