Physical and psychological correlates of functioning in patients with chronic obstructive pulmonary disease

The indirect influence of 'invisible' support on pulmonary function among adults with chronic obstructive pulmonary disease

Individuals living with chronic obstructive pulmonary disease (COPD) often require support from family or friends. We examined whether invisible support - support that is provided but goes unnoticed - is related to pulmonary function, and whether this association is mediated by depressive symptoms and illness perceptions. Sixty-six dyads of individuals with COPD and their informal caregivers reported on receipt and provision of support, respectively. Those with COPD completed measures of depressive symptoms, illness perceptions and pulmonary function. Although invisible support was not directly related to pulmonary function, mediation analyses revealed a combined indirect effect through lower depressive symptoms and less negative illness perceptions. Interventions teaching skillful delivery of support to caregivers may reduce depressive symptoms and threatening illness cognitions, which may contribute to improvements in symptom burden among patients with COPD.

Coping, Anxiety, and Pain Intensity in Patients Requiring Thoracic Surgery

Stress, anxiety, and post-surgical chest pain are common problems among patients with thoracic surgical pathology. The way in which psychological distress is managed-the coping style-can influence the postsurgical evolution and quality of life of patients. In our study, we monitored the influence of coping style on patients' anxiety and the intensity of post-operative chest pain. We conducted a cross-sectional study on 90 subjects with thoracic surgical pathology. One month after their surgeries, patients completed the following scales and questionnaires, translated, adapted, and validated for the Romanian population: COPE scale inventory, Generalized Anxiety Disorder-7 Questionnaire, McGill Pain Questionnaire, and Numeric Pain Rating Scale. Anxiety (evaluated using the Generalized Anxiety Disorder-7 Questionnaire) and postoperative thoracic pain intensity (evaluated by means of the Numeric Pain Rating Scale, Number of Words Chosen, and McGill Pain Questionnaire) were significantly higher in patients exhibiting social-focused coping than in patients presenting emotion-focused or problem-focused coping as their main coping style (Kruskal-Wallis, p = 0.028, p = 0.022, p = 0.042, p = 0.007). In our study, there were no differences observed in pain intensity relative to level of anxiety. Coping style is an important concept in the management of anxiety and pain experienced by patients undergoing chest surgery. Therefore, a multidisciplinary approach should be considered in clinical practice.

Impact of patients' attitudes and dynamics in needs and life experiences during their journey in COPD: an ethnographic study

OBJECTIVES

Despite its importance in determining coping behaviors, few studies have assessed the reality of chronic obstructive pulmonary disease (COPD) and its management perceived by patients. This study aimed at an in-depth understanding of this reality to identify COPD patients' attitudes, COPD-shaped experiences, and overlooked needs during their journey.

METHODS

Qualitative ethnographic study including 28 adult patients with moderate and severe COPD and 20 healthcare professionals. Study phases were (1) in-depth individual and (2) ethnographic interviews (qualitative), and (3) online questionnaires (quantitative), including 400 patients. Qualitative data were collected using audio, video, and observation notes. Three ethnographers analyzed data using a template covering different themes: attitudes of COPD patients, COPD-shaped experiences, and overlooked needs.

RESULTS

We identified four attitudinal profiles of COPD patients: 'active controller,' 'naïve minimizer,' 'defeated sufferer,' and 'struggling bon vivant,' which were validated in 400 COPD patients, as well as five stages in the COPD patient journey and overlookedneeds. The 'active controller' profile was associated with slower disease progression compared with the 'defeated sufferer' and 'struggling bon vivant' profiles.

CONCLUSION

Four attitudinal profiles were distinguished and validated in a large sample of COPD patients. Patients' attitudes impacted in COPD-associated experiences, limitations, and unmet needs, which differed among profiles.

Micro-phenomenological approach to explore the patient experience during an initial spirometry examination to diagnose COPD in general practice in France

OBJECTIVES

To explore the patient experience of a spirometry test used to confirm chronic obstructive pulmonary disease (COPD) diagnosis in patients with suspected smoking-related COPD.

DESIGN

This is a qualitative study, performed with open interviews in adults following a routine spirometry test to confirm COPD diagnosis. Data were analysed with a phenomenological-inspired micro-phenomenology approach.

PARTICIPANTS

Eligible patients were recruited through their general practitioner, 10 were interviewed.

SETTING

Primary care in Centre-Val-De-Loire area, France, in 2018.

RESULTS

Participants reported the spirometry test experience as being unfamiliar but gave meaning to the symptoms they experience. Participants expressed a desire to perform the test well and a willingness to confront their state of health. After the spirometry had been completed and the results announced, participants moved through stages of grief from their pre-spirometry self and symptom perception to a state of acceptance. Overall, participants expressed a narrative of an evolving cognitive and corporeal awareness during this spirometry experience. The verbatim quotes describe a cognitive rupture with their chronic illness usually considered as a 'way of life'.

CONCLUSIONS

A spirometry test goes beyond a diagnostic value, providing patients with an opportunity to gain awareness of their own state of health, reframe their breathlessness-related limitations and thus begin to accept the disease. These awareness gains may be considered as small steps towards health behavioural change. Spirometry may have educative potential and support lifestyle changes.

[Studies on Factors Influencing Influenza Vaccination Rates in Patients with Chronic Obstructive Pulmonary Disease]

BACKGROUND : With low influenza vaccination rates among the chronically ill, approaches to increase these rates among risk patients with chronic obstructive pulmonary disease (COPD) are to be uncovered. METHODS : 120 COPD patients from Magdeburg filled out a questionnaire and were analyzed regarding the influenza vaccination status 2015/2016 or 2016/2017. Vaccinated and unvaccinated were compared in socio-epidemiological factors, the health belief model (HBM), self-efficacy (GESIS-ASKU), anxiety/depression (HADS-D) and disease processing (FKV-LIS). RESULTS : 62.5 % (n = 75) were vaccinated, 31.7 % (n = 38) unvaccinated, 5.8 % (n = 7) made no statement. In over or equal to 60-year-olds 76 % were vaccinated, in under 60-year-olds 42 % were vaccinated. 60 % (n = 72) knew to belong to a risk group. Unvaccinated indicated greater concern about side effects of the vaccination (p = .004) and drew a worse benefit-expense balance (p = .001). Unvaccinated were more often uncertain about the vaccination protection and the severity of influenza (p ≤ .001). Vaccinated were highly motivated to think about vaccination themselves and more often had a positive vaccination history (p = .001). COPD patients showed a lower self-efficacy than the reference group of the German general population (p = .000), vaccinated and unvaccinated did not differ (p = .418). No difference between vaccinated and unvaccinated was found in the processing of the disease and in depression and anxiety, but unvaccinated tended to give higher anxiety values. CONCLUSION : Measures should particularly target COPD patients under 60 years of age with a negative vaccination history and sensitize them as risk patients. Widespread uncertainties about the severity of influenza and vaccination protection should be addressed. It should be communicated that influenza vaccination does not lead to exacerbation. The vaccination recommendation should increasingly be made by pulmonologists.

Illness perception and high readmission health outcomes

This review identified associations between illness perception and health outcomes of patients with a medical diagnosis included in the Hospital Readmissions Reduction Program. Inclusion criteria were English language, use of quantitative methodology, health outcomes specified, and identifiable effect size and statistical significance of the relationship. Most of the 31 studies in this review showed that favorable illness perception has been associated with better health outcomes, while unfavorable illness perception has been associated with worse outcomes. A multifaceted approach might include behavioral, clinical, educational, and psychosocial components to improve one’s illness perception through educative, cognitive-behavioral, or psychodynamic counseling.

Randomized controlled study on the effectiveness of animal-assisted therapy on depression, anxiety, and illness perception in institutionalized elderly

AIM

The aim of this study was to verify dog-assisted therapy's effectiveness on depression and anxiety in institutionalized elderly. Patients' illness perception was examined to identify core beliefs regarding mood, personal control, and illness coherence because they can affect treatment compliance. Subjective perception of pain, social interaction, and setting-bound observable variables were also studied.

METHODS

This study involved a randomized sample of institutionalized patients 65 years of age and older; the treatment group had 17 subjects and the control group had 14 subjects. All patients were administered the Mini-Mental State Examination, 15-item Geriatric Depression Scale, Positive and Negative Affect Schedule, Generalized Anxiety Disorder 7, Illness Perception Questionnaire, and Numeric Pain Rating Scale. Intra- and inter-group data analysis was performed before and after treatment. Over the course of 10 weeks, patients participated in individual 30-min sessions. An observational methodology was developed to record verbal and non-verbal interactions between the elderly, the dog, and the dog handler.

RESULTS

A large effect size and a statistically significant decrease in 15-item Geriatric Depression Scale scores were identified in the treatment group. No significant differences were detected in the Generalized Anxiety Disorder 7, Positive and Negative Affect Schedule, and Numeric Pain Rating Scale. However, the Positive and Negative Affect Schedule and the Numeric Pain Rating Scale showed a moderate decrease. The Illness Perception Questionnaire's timeline (acute/chronic) and treatment control subscales showed a clinically relevant, large effect size.

CONCLUSIONS

Dog-assisted therapy has proved to be effective in reducing symptoms of depression in institutionalized elderly. The increase in verbal interactions with the handlers throughout the study suggests the dog acts as a facilitator of social interaction, eliciting positive emotional responses. Dog-assisted therapy shows promising results in the perception of illness timeline and treatment control, indicating potential enhancement of the sense of treatment-related empowerment. However, further study is required.

Cognitive and Perceptual Factors, Not Disease Severity, Are Linked with Anxiety in COPD: Results from a Cross-Sectional Study

PURPOSE

Guided by the Transactional Model of Stress and Coping, the purpose of this cross-sectional study was to examine clinical factors-demographics, chronic obstructive pulmonary disease (COPD) severity, cognitive/perceptual variables (appraisal and coping)-and their relationship to clinically elevated symptoms of anxiety in a sample of veterans with COPD.

METHOD

Participants included a sample of veterans with COPD, with or without comorbid congestive heart failure, and clinically significant symptoms of anxiety (n = 172, mean age = 65.3, SD = 8.1), who previously presented to an outpatient VA setting. Participants completed questionnaires examining COPD severity (respiratory impairment and dyspnea- and fatigue-related quality of life); perceptions of a stressor (COPD illness intrusiveness); perceptions of control (locus of health control, mastery over COPD, self-efficacy); coping strategies (adaptive and maladaptive); and anxiety and depressive symptoms.

RESULTS

Multivariable linear regressions revealed that anxiety was positively associated with more maladaptive coping and locus of control (attributed to other people), above and beyond disease severity, demographics, and depressive symptoms.

CONCLUSION

These findings suggest that cognitive and perceptual factors are concurrent with anxiety; however, longitudinal investigations are needed to fully understand this relationship. Future research should also focus on identifying optimal assessment and treatment procedures when evaluating and treating patients with COPD and symptoms of anxiety.

TRIAL REGISTRATION

NCT01149772.

COPD patient education and support - Achieving patient-centredness

BACKGROUND

The art of medicine is undergoing a dramatic shift in focus, evolving to focus on patient involvement as partners in care, transforming the traditional, prescriptive, reactive practice of healthcare into a proactive discipline. The personal and societal burden of chronic diseases is burgeoning and unsustainable in current systems, novel approaches are required to address this.

DISCUSSION

Although considerable progress has been made in the development of diagnostics, therapeutics and care guidelines for patients with chronic obstructive pulmonary disease (COPD), questions remain surrounding the implementation of best practice education and support. Current educational programmes, personal limitations and preferences and patient-clinician communication in modification of coping styles and behaviour are discussed. A novel holistic model, the Kaleidoscope Model of Care is proposed to address the barriers to optimal self-care behaviours.

CONCLUSION AND PRACTICE IMPLICATIONS

Holistic approaches are essential for optimal self-management and improved outcomes. Guidance on personalised goals for patients to help meeting their therapy priorities is needed to aid healthcare professionals (HCPs) and funders to minimise healthcare burden and costs. The novel KALMOD approach may optimise patient empowerment, exploring whole-life factors that impact COPD care and improve interactions between patients and HCPs for optimised outcomes.

Psychological distress in patients with obstructive sleep apnoea: The role of hostility and coping self-efficacy

We aimed to assess whether hostility and coping self-efficacy are associated with psychological distress in obstructive sleep apnoea patients. Furthermore, we examined whether coping self-efficacy mediates the association between hostility and psychological distress. We included 150 obstructive sleep apnoea patients (Apnoea-Hypopnoea Index ⩾5; 68% male; mean age: 48.9 ± 9.5 years). Regression models showed that hostility and poor coping self-efficacy were strongly associated with psychological distress in obstructive sleep apnoea patients. All assessed coping self-efficacy dimensions mediated the association between hostility and psychological distress. Coping self-efficacy for stopping unpleasant emotions and thoughts showed the strongest association with a lower level of psychological distress.

Exploring the nature of illness perceptions in people with end-stage kidney disease

BACKGROUND

Diagnosis and treatment for End-Stage Kidney Disease (ESKD) results in vast lifestyle changes. Despite the high prevalence of depression in people with ESKD, the psychosocial impacts of ESKD are still often overlooked. Illness perceptions enable people to make sense of their illness and are closely associated with depression. Due to the high levels of depression within ESKD, this study sought to understand the nature of illness perceptions in people with ESKD.

METHODOLOGY

In this qualitative study, eleven participants were identified through hospital and online patient support groups. Semi-structured interviews were audio-taped, transcribed and analysed using grounded theory techniques.

RESULTS

Three themes emerged from the data: Renal Conflicts, Forced Adjustment and Coping. The main dimensions of illness perception discussed by participants were Consequences, Control, Timeline and Identity.

CONCLUSION

The results of this study have practical implications for informing practitioners about the psychosocial effects of ESKD diagnosis and treatment.

A qualitative interpretation of challenges associated with helping patients with multiple chronic diseases identify their goals

Background

Patients with multiple chronic diseases are usually treated according to disease-specific guidelines, with outcome measurements focusing mostly on biomedical indicators (e.g. blood sugar levels or lung function). However, for multimorbidity, a goal-oriented approach focusing on the goals defined by the individual patient, may be more suitable. Despite the clear theoretical and conceptual advantages of including patient-defined goals in clinical decision-making for multimorbidity, it is not clear how patients define their goals and which aspects play a role in the process of defining them.

Objective

To explore goal-setting in patients with multimorbidity.

Design

Qualitative analysis of interviews with 19 patients diagnosed with chronic obstructive pulmonary disease and comorbidities.

Results

Patients do not naturally present their goals. Their goals are difficult to elicit, even when different interviewing techniques are used. Four underlying hypotheses which may explain this finding were identified from the interviews: (1) patients cannot identify with the concept of goal-setting; (2) goal-setting is reduced due to acceptation; (3) actual stressors predominate over personal goal-setting; and (4) patients may consider personal goals as selfish.

Conclusions

Our findings advocate for specific attention to provider skills and strategies that help patients identify their personal goals. The hypotheses on why patients may struggle with defining goals may be useful to prompt patients in this process and support the development of a clinical method for goal-oriented care.

Illness perceptions and coping determine quality of life in COPD patients

Background

A key goal of chronic obstructive pulmonary disease (COPD) care is to improve patients’ quality of life (QoL). For outcomes such as QoL, illness perceptions and coping are important determinants.

Aim

The primary aim was to assess the associations between illness perceptions, coping and QoL in COPD patients. A secondary aim was to compare illness perceptions and coping of patients with reference values derived from the literature.

Patients and methods

A total of 100 patients were included in the study. Patients were asked to complete the Brief Illness Perception Questionnaire (B-IPQ), the Utrecht Proactive Coping Competence scale (UPCC), and a QoL item. Correlations and linear regression models were used to analyze the data. Student’s t-tests were used to compare patients with COPD with reference values derived from the literature.

Results

Patients with better understanding of COPD utilized more proactive coping strategies (P=0.04). A more intense emotional response to COPD was related to less proactive coping (P=0.02). Patients who reported using more proactive coping techniques also reported to have a better QoL (P<0.01). Illness perceptions were also related to QoL: more positive illness perceptions were related to a better QoL (all P<0.05). Patients with COPD reported more negative illness perceptions than people with a common cold or patients with asthma (all P<0.01), but reported similar perceptions compared with patients with diabetes.

Conclusion

Patients with COPD reported a moderate QoL, but appeared to be proficient in proactive coping. Illness perceptions, coping, and QoL were all associated with each other. Patients reported more strongly affected illness perceptions compared to people with a cold and patients with asthma. We postulate that a self-management intervention targeting patients’ illness perceptions leads to improved QoL.

Evaluating illness representations in heart transplant patients

The aim was to see whether qualitative analysis improved quantitative measurement of illness perception after heart transplant. Two methods of evaluating illness representations were compared: one quantitative (administration of the Illness Perception Questionnaire-Revised) and one qualitative (phenomenological reduction). The qualitative analysis provided greater insight into the idiosyncratic and dynamic nature of the concept of illness representations. Adjustments to the Illness Perception Questionnaire-Revised are suggested to improve the evaluation of illness perception in terms of dispersion of scores, emotional impact, coping strategies and treatment, and social support, and ultimately to enhance interventions designed to promote treatment compliance.

Patients' Perspectives on Their Dry Eye Disease

PURPOSE

Although it has been known that patients' perspectives on their disease can significantly affect their level of functional disability as well as disease outcome, limited data are available on patients' perceptions of their dry eye disease (DED). The aim of this questionnaire-based study was to evaluate patients' perspectives on their DED.

METHODS

This cross-sectional study included 91 patients with DED. In addition to clinical evaluation, all patients completed a questionnaire to evaluate their perspectives on their DED. This included their satisfaction with understanding DED, their opinion on the easiness of following doctors' advice, their opinion on the effectiveness of the treatment, their satisfaction with the eye care, and their general outlook on DED.

RESULTS

This study included 75 (82%) women and 16 men (18%) with a mean age of 57 ± 14 years who had been treated for DED for 5.2 ± 5.4 years. 93% of the patients were satisfied with their understanding of DED, and 76% found it easy to follow their doctors' advice for DED management. Furthermore, 95% thought that the DED treatment had been helpful and 95% were satisfied with their eye care for DED. Forty-eight percent expressed optimism regarding the long-term prospects of their DED.

CONCLUSIONS

Although the majority of DED patients have positive perspectives on their disease, close to half report a lack of optimism regarding the long-term outlook for their condition.

The impact of coping on the somatic and mental status of patients with COPD: a cross-sectional study

BACKGROUND AND OBJECTIVES

Chronic obstructive pulmonary disease (COPD) is one of the most debilitating somatic diseases, having anxiety and depression frequently as comorbidities. The coping style, the way in which the subject manages to control the difficult and stressful situations of life, can influence its evolution and also the existence of the comorbidities. In this study, coping styles in a group of subjects with COPD and their association with the intensity of depressive and anxiety symptoms as well as medical determinants were identified.

MATERIALS AND METHODS

In this cross-sectional study, 28 male patients with COPD risk class D were enrolled. The patients performed spirometry tests, Borg scale, 6-minute walking test, Hospital Anxiety and Depression Scale, and COPE Inventory were recorded.

RESULTS

According to their higher coping subscale score, the depression score was the highest in patients with avoidance-type coping and the lowest in patients with problem-focused coping (11.0 vs 5.6; P=0.042), respectively, patients with social support-focused coping having the highest anxiety score in contrast to patients with emotion-focused coping, which had the lowest anxiety score (11.6 vs 5.0; P=0.006). Regarding respiratory parameters, significant differences were present for the variation of the medians between the four groups only for forced vital capacity (FVC%) (the lowest FVC% was in patients with predominant social support-focused coping and the highest in patients with problem-focused coping) and 6-minute walking test (%) (the lowest score for patients with social support-focused coping and the highest value in patients with avoidance-type coping). Problem-coping score was significantly and positively associated with FVC% (Spearman's r=0.400; P=0.035), emotion-focused coping score was significantly and positively associated with FVC% (Spearman's r=0.395; P=0.038), and social support-focused coping score was negatively and significantly correlated with forced expiratory volume in 1 second/FVC% ratio (Spearman's r=0.389; P=0.041). A significant, negative correlation was found only between depression score and forced expiratory volume in 1 second (Spearman's r=-0.435; P=0.026) with respect to psychiatric symptoms.

CONCLUSION

Coping styles in patients with COPD affect the intensity of associated depressive and anxiety symptoms as well as medical determinants, thus the coping style should be considered an important part in the multidisciplinary approach of these patients.

Can illness beliefs, from the common-sense model, prospectively predict adherence to self-management behaviours? A systematic review and meta-analysis

OBJECTIVE

To determine whether people's beliefs about their illness, conceptualised by the common sense model (CSM), can prospectively predict adherence to self-management behaviours (including, attendance, medication, diet and exercise) in adults with acute and chronic physical illnesses.

DESIGN AND MAIN OUTCOME MEASURES

Electronic databases were searched in September 2014, for papers specifying the use of the 'CSM' in relation to 'self-management', 'rehabilitation' and 'adherence' in the context of physical illness. Six hundred abstracts emerged. Data from 52 relevant studies were extracted. Twenty-one studies were meta-analysed, using correlation coefficients in random effects models. The remainder were descriptively synthesised.

RESULTS

The effect sizes for individual illness belief domains and adherence to self-management behaviours ranged from .04 to .13, indicating very weak, predictive relationships. Further analysis revealed that predictive relationships did not differ by the: type of self-management behaviour; acute or chronic illness; or duration of follow-up.

CONCLUSION

Individual illness belief domains, outlined by the CSM, did not predict adherence to self-management behaviours in adults with physical illnesses. Prospective relationships, controlling for past behaviour, also did not emerge. Other factors, including patients' treatment beliefs and inter-relationships between individual illness beliefs domains, may have influenced potential associations with adherence to self-management behaviours.

Current and Future Perspectives of Liaison Psychiatry Services: Relevance for Older People's Care

A large number of people admitted to medical wards have co-morbid mental health problems, and these predominantly include depression, dementia and delirium. An additional one third of medically ill patients remain in hospitals with undetected and, therefore, undiagnosed mental health problems. The comorbidity of mental and physical illnesses leads to poor health outcomes, prolonged inpatient stays and use of inpatient resources, involvement of various affiliated health services, introduction of medications and discharge to long-term facilities, including residential and nursing 24-h care, increased both readmission rates and mortality. The establishment of Liaison psychiatry services to meet the needs for people with mental health problems admitted to medical wards is a priority for many acute health Trusts. This has an economical background in terms of cost-savings, especially in relation to the older adults, with decreasing readmission rates and quicker hospital discharges. In the current review, we address the latest policies regarding Liaison psychiatry services; especially those for older people with dementia and delirium, and discuss their future shaping.

Illness perceptions and coping in physical health conditions: A meta-analysis

OBJECTIVE

There is a considerable body of research linking elements of Leventhal's Common Sense Model (CSM) to emotional well-being/distress outcomes among people with physical illness. The present study aims to consolidate this literature and examine the evidence for the role of coping strategies within this literature.

METHODS

A systematic review was conducted where the outcomes of interest were: depression, anxiety and quality of life. A total of 1050 articles were identified and 31 articles were considered eligible to be included in the review.

RESULTS

Across a range of illnesses, perceptions of consequences of the illness and emotional representations were consistently the illness perceptions with the strongest relationship with the outcomes. Coping variables tend to be stronger predictors of outcomes than the illness perception variables. The evidence for the mediating effect of coping was inconsistent.

CONCLUSIONS

Illness perceptions and coping have an important role to play in the explanation of distress outcomes across a range of physical health conditions. However, some clarity about the theoretical position of coping in relation to illness perceptions, and further longitudinal work is needed if we are to apply this information to the design of interventions for the improvement of psychological health among people with physical health conditions.

Psychological predictors for health-related quality of life and disability in persons with chronic obstructive pulmonary disease (COPD)

OBJECTIVE

Individuals with chronic obstructive pulmonary disease (COPD) exhibit low physical and mental health-related quality of life (HRQL) and high susceptibility to disability. We investigated the influence of psychological factors on HRQL and disability in COPD individuals recruited from the general population. In line with Leventhal's common sense model, we expected psychological factors to be associated with HRQL and disability even after controlling for medical status.

METHODS

Individuals with COPD (n = 502; 59.7 years old; GOLD grades were I: 3%, II: 17%, III: 34%, IV: 46%) were assessed through an online survey administered via COPD patient organisations in Germany. Individuals filled in the Short Form Health Survey (SF-12), COPD Assessment Test, Patient Health Questionnaire (modules: GAD-2, PHQ-15, PHQ-9), Brief Illness Perception Questionnaire, a questionnaire that assesses causal illness attributions, and the internal illness-related locus of control scale of the 'KKG questionnaire for the assessment of control beliefs about illness and health'. Multiple linear regressions were calculated.

RESULTS

The investigated factors explained high variances (disability = 56%, physical HRQL = 28%, mental HRQL = 63%, p ≤ .001). Better mental health, more optimistic illness perceptions, attribution to psychological causes, and stronger internal locus of control were associated with lower disability and better HRQL. Comorbid somatic symptoms contributed to high disability and low quality of life.

CONCLUSION

Psychological factors, such as illness perception, attribution and internal locus of control, were associated with disability and HRQL. These factors should be considered when designing treatments for individuals with COPD, and adequate interventions should be provided to enhance illness understanding and self-management skills.

Differences in change in coping styles between good responders, moderate responders and non-responders to pulmonary rehabilitation

INTRODUCTION

Pulmonary rehabilitation (PR) improves exercise tolerance and health status in patients with chronic obstructive pulmonary disease (COPD). Data on the effects of PR on coping styles are limited. Aim of the present study was to compare changes in coping styles between patients who had a good, moderate and no improvement in either exercise tolerance or health status after PR.

METHODS

Coping styles of 439 COPD patients undergoing PR were assessed by the Utrecht Coping List (UCL) at baseline and after PR. Patients' pulmonary function, six-minute walking distance (6MWD), St. George's Respiratory Questionnaire (SGRQ) and Hospital Anxiety and Depression Scale (HADS-A and HADS-D) were recorded. Good, moderate and non-responders were defined on the basis of minimally clinically important difference (MCID) for SGRQ total score and/or 6MWD.

RESULTS

Overall, 54.0% of the patients fulfilled the criteria for good responders, while 22.1% were moderate responders. Change in passive reaction pattern coping style differed significantly between good responders and non-responders following PR (p < 0.001). Moreover, within the groups, changes in coping styles after PR occurred among the good responders, whereas the majority of moderate responders' and non-responders' coping styles were not significantly influenced by PR.

CONCLUSION

Good responders decreased their passive reaction pattern coping style in contrast to non-responders after PR. In general, PR did not change the coping among moderate and non-responders. Further research is warranted to determine whether including interventions targeting coping styles may modify coping behaviour of COPD patients, as well as improvement in exercise tolerance or health status after PR.

Understanding patients' perspective of statin therapy: can we design a better approach to the management of dyslipidaemia? A literature review

INTRODUCTION

Dyslipidaemia leads to atherosclerosis and is a major risk factor for cardiovascular diseases. In clinical trials, 3-hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) reductase inhibitors, or statins, have been shown to effectively reduce dyslipidaemia. Despite the availability and accessibility of statins, myocardial infarctions and cerebrovascular accidents remain among the top causes of mortality in developed countries, including Singapore. This enigma could be attributed to suboptimal adherence to statin therapy. The present literature review aimed to evaluate patients' perceptions of statin therapy.

METHODS

We searched PubMed and other databases for articles published in English from October 1991 to May 2012 containing keywords such as 'patient', 'views', 'perceptions', 'adherence', 'statin' and 'dyslipidaemia'. Of the 122 eligible studies retrieved, 58 were reviewed. The findings were categorised and framed in accordance with the Health Belief Model.

RESULTS

Patients with dyslipidaemia appeared to underestimate their susceptibility to dyslipidaemia-related complications, partly due to their demographic profiles. Failure to appreciate the severity of potential complications was a major hindrance toward adherence to statin therapy. Other factors that affected a patient's adherence included lack of perceived benefits, perceived side effects, the cost of statins, poor physician-patient relationship, and overestimation of the effectiveness of diet control as a treatment modality.

CONCLUSION

Existing evidence suggests that the cause of poor adherence to statin therapy is multifactorial. The use of the Health Belief Model to present the results of our literature review provides a systematic framework that could be used to design a patient-centric approach for enhancing adherence to statin therapy.

The relationship between coping styles and clinical outcomes in patients with COPD entering pulmonary rehabilitation

BACKGROUND

Symptoms of anxiety, depression and exercise intolerance contribute to an impaired health status in patients with Chronic Obstructive Pulmonary Disease (COPD). Coping styles may also be related to symptoms and health status. Objectives of this study were to assess the distribution of coping styles in patients entering pulmonary rehabilitation (PR) with and without anxiety and/or depression; and to assess whether coping styles contribute to exercise intolerance and reduced health status.

METHODS

Coping styles were studied in 698 patients using the Utrecht Coping List (UCL). Disease-specific health status (St. George's Respiratory Questionnaire, SGRQ), anxiety and depression (Hospital Anxiety and Depression Scale, HADS), exercise tolerance (6-minute walking distance, 6MWD) and clinical characteristics were assessed.

RESULTS

High levels (16.5%) of active confronting coping style were rarely reported. A minority of patients used low levels (17.5%) of passive reaction pattern coping style. Differences in coping profiles were present between patients with and without anxiety and/or depression. A higher level of active confronting coping style was associated with a higher 6MWD (Beta 0.092, p < 0.01), while a higher level of avoidance coping style was associated with a lower 6MWD (Beta -0.074, p = 0.017). The UCL subscales were not related to SGRQ total score (p > 0.05).

CONCLUSIONS

In COPD patients entering PR, coping styles were associated with symptoms of anxiety, depression and exercise intolerance, but not associated with disease-specific health status. Future studies should examine whether interventions aiming at optimizing coping styles during PR can improve outcomes for patients with COPD.

Illness perceptions predict exercise capacity and psychological well-being after pulmonary rehabilitation in COPD patients

OBJECTIVE

Patients' beliefs about their disease have been associated with emotional adjustment and outcomes in several severe illnesses. The aim of the present study was to investigate whether illness perceptions before pulmonary rehabilitation influence exercise capacity and quality of life after rehabilitation in patients suffering from chronic obstructive pulmonary disease (COPD).

METHODS

Ninety-six patients with COPD (GOLD III/IV) were approached on admission to rehabilitation and reassessed before discharge. Assessment included medical measures of FEV% predicted, and exercise capacity (6 min walk test). Additionally, depressive symptoms (Hospital Anxiety and Depression scale), anxiety (COPD specific anxiety questionnaire) and quality of life (Short Form 36 health survey (SF-36)) were assessed. Illness beliefs were measured by the Revised Illness Perception Questionnaire (IPQ-R).

RESULTS

Exercise capacity and psychological well-being (SF-36) of patients improved after rehabilitation programme, while physical functioning (SF-36) did not change. Additionally, patients showed significantly lower levels of depressive symptoms, COPD specific anxiety and negative perceptions of their illness after pulmonary rehabilitation compared to baseline. In the hierarchical multiple regression analyses, after controlling for socio-demographic data, psychological variables, illness severity and baseline scores of the corresponding variables, it was shown that illness perceptions before rehabilitation predicted exercise capacity and psychological well-being, both assessed at the end of treatment.

CONCLUSION

COPD patients' perceptions about their illness before rehabilitation influence exercise capacity and quality of life (psychological well-being) after treatment. Therefore it might be relevant to identify and change maladaptive illness perceptions in order to improve medical and psychological outcome in COPD.

A 1-year follow-up study exploring the associations between perception of illness and health-related quality of life in persons with chronic obstructive pulmonary disease

Chronic obstructive pulmonary disease (COPD) is a progressive respiratory disease with an increasing prevalence worldwide. Its potential consequences, including reduced function and reduced social participation, are likely to be associated with decreased health-related quality of life (HRQoL). However, illness perceptions and self-efficacy beliefs may also play a part in determining HRQoL in persons with COPD. The aim of this study was to explore the relationships between illness perceptions, self-efficacy, and HRQoL in a sample of persons with COPD in a longitudinal perspective. The context of the study was a patient education course from which the participants were recruited. Data concerning sociodemographic variables, social support, physical activity, illness perceptions, general self-efficacy, and HRQoL were collected before the course started and 1 year after completion. Linear regression was used in the analyses. The results showed that less consequences and less symptoms (identity) were associated with higher physical HRQoL (PCS) at baseline and at 1-year follow-up. Less emotional response was similarly associated with higher mental HRQoL (MCS) at both time points. Lower self-efficacy showed a borderline significant association with higher PCS at baseline, but was unrelated to MCS at both time points. Self-efficacy showed no influence on the associations between illness perceptions and HRQoL. In conclusion, the study showed that specific illness perceptions had a stable ability to predict HRQoL in persons with COPD, whereas self-efficacy did not. The associations between illness perceptions and HRQoL were not mediated by self-efficacy.

Trajectories of illness perceptions in persons with chronic illness: An explorative longitudinal study

Accurate illness perceptions are essential to the self-management of chronic illness. This study explored trajectories of illness perceptions in persons with morbid obesity ( n = 53) and persons with chronic obstructive pulmonary disease ( n = 52) following a patient education course. Participants completed the Brief Illness Perception Questionnaire five times over a 1-year period. Repeated measures analysis of variance was employed. Over time, obese participants perceived shorter illness duration, fewer consequences, less emotional stress, and more personal control. Chronic obstructive pulmonary disease participants had initial increases in personal control and understanding, but these changes were not maintained throughout the follow-up period.

The effects of personal resources and coping strategies on depression and anxiety in patients with chronic obstructive pulmonary disease

OBJECTIVES

Little is known about how personal resources and coping strategies influence depression and anxiety in patients with COPD. The purpose of this study was to examine the effect of personal resources on the coping strategies and psychological responses and the mediating role of coping strategies on the relationship of personal resources to depression and anxiety in patients with COPD using a path model.

METHODS

This was a cross-sectional correlational study. The participants were 209 patients diagnosed with COPD in South Korea. Personal resources were defined as knowledge of COPD, self-efficacy, and social support. Coping includes both problem-oriented and affect-oriented coping strategies.

RESULTS

Higher levels of knowledge of the disease were associated with fewer depressive symptoms; and this relationship was partially mediated by problem-oriented coping strategies. Higher levels of self-efficacy were related to less depression and anxiety. Patients with more perceived social support experienced fewer depressive symptoms through the use of problem-oriented coping strategies.

CONCLUSIONS

Our findings suggest that problem-oriented coping strategies may explain the mechanism of how knowledge of the disease and social support influence depressive symptoms for patients with COPD. Further interventions focusing on modifiable factors, including personal resources and problem-oriented coping strategies, are warranted to improve psychological outcomes for patients with COPD.

Coping styles in patients with COPD before and after pulmonary rehabilitation

INTRODUCTION

Pulmonary rehabilitation (PR) improves physical and psychological symptoms in COPD patients. Patients' coping with daily symptoms and limitations may have more influence on important patient-centred outcomes than the impaired lung function. To date, it remains unknown whether and to what extent coping styles change following PR, and whether coping styles are associated with the outcomes of a comprehensive PR.

METHODS

Coping styles were assessed in 303 COPD patients before and after a PR programme using the Utrecht Coping List (UCL). Additionally, lung function, St. George's Respiratory Questionnaire (SGRQ), Hospital Anxiety and Depression Scale, anxiety (HADS-A) and depression (HADS-D) subscales and six-minute walking distance (6MWD) were recorded.

RESULTS

The level of active confronting coping style increased (p < 0.05), whereas the levels of avoidance (p < 0.05), passive reaction pattern and reassuring thoughts coping styles decreased following PR (both p < 0.001). More than 50% of the patients changed their level of active confronting, passive reaction pattern or expressing emotions coping style. Coping styles and/or changes in coping styles after PR were related to changes in exercise tolerance, anxiety and depression, but were not related to changes in health status. Following PR, SGRQ total score, HADS-A and HADS-D scores decreased (all p < 0.001), while 6MWD increased (p < 0.05).

CONCLUSION

Comprehensive PR results in change in coping styles of COPD patients. Coping styles are related to improvements in exercise tolerance, anxiety and depression, but they are not related with changes in health status after PR. Further studies are needed to evaluate the outcome of interventions actively targeting coping styles.

Chronic obstructive pulmonary disease and comorbidities through the eyes of the patient

Patient's attitudes and illness beliefs have shown to be of great importance in chronic obstructive pulmonary disease (COPD). As former qualitative research has mainly focused on patients with end-stage COPD, who are recruited within hospital or pulmonary rehabilitation settings, and excluding patients with disabling comorbidities, this study specifically aims to explore the perspectives of patients with COPD and comorbidities in primary care. This study was designed as a qualitative, explorative study using open patient interviews. The study was conducted at three primary care practices, East Flanders, Belgium. A total number of seven patients, diagnosed with COPD and given a minimum score of 2 on the Charlson Comorbidity Index were included. In-depth interviews were recorded and transcribed verbatim. Thematic analysis was deductive using NVivo software. Researchers' triangulation was performed. Participants show high adaptation capabilities and report quite positively about their functional status, with an emphasis on social participation and partnership. Knowledge of the causes and consequences of COPD appears rather limited, and participants predominantly show an external locus of control in relation to the reported factors influencing the disease and strategies for self-management. Patients with COPD with comorbidity integrate their illness and symptoms into their lives. However, a lack of knowledge and education may leave them more anxious and more dependent on health care than necessary. Our results indicate that health care workers should adopt a positive approach toward patient's functioning and empower and inform their patients. We believe that chronic care for patients with COPD should provide personalized rehabilitation taking into account individual patient characteristics and self-management and coping attitudes. We believe that there is a generic core to be identified, which can tackle both COPD and comorbidities. Further research is mandatory to develop these generic programs focusing on patients with complicated needs. Primary care can provide the setting for exploration.

Attributions about cause of illness in chronic obstructive pulmonary disease

OBJECTIVE

Patients' beliefs about the causes of their illness have been associated with emotional adjustment and behavioral outcomes in several medical conditions; however, few studies have examined illness attributions among patients with chronic obstructive pulmonary disease (COPD). In the current study, patterns of patients' causal attributions for COPD were identified and examined in relation to health behaviors and symptoms.

METHOD

Three-hundred and ninety-four patients with COPD and >10 pack year history of smoking completed a self-report questionnaire that included the Illness Perception Questionnaire-Revised (IPQ-R).

RESULTS

A factor analysis of the IPQ-R cause items using principal axis factoring yielded four individual items (i.e., smoking, heredity, pollution, and personal behavior) and one large factor that was primarily driven by psychological attributions. Ninety-three percent of patients agreed or strongly agreed that smoking was a cause of their COPD. Higher scores on the large IPQ-R factor were associated with reduced quality of life (r=.25, P<.001) and symptoms of anxiety (r=.33, P<.001) and depression (r=.31, P<.001), indicating that patients who attributed their COPD to psychological factors were more likely to have poorer emotional adjustment and quality of life.

CONCLUSIONS

Our finding of one large factor with several stand-alone items is in contrast with previous research that has derived a multifactor structure for the cause items of the IPQ-R in other chronic illness populations. This difference may be due to the importance of smoking, environmental exposures, and heredity in the development of COPD. Future research should expand upon these specific attributions in COPD.

Ambulatory oxygen: why do COPD patients not use their portable systems as prescribed? A qualitative study

Background

Patients with COPD on long term oxygen therapy frequently do not adhere to their prescription, and they frequently do not use their ambulatory oxygen systems as intended. Reasons for this lack of adherence are not known. The aim of this study was to obtain in-depth information about perceptions and use of prescribed ambulatory oxygen systems from patients with COPD to inform ambulatory oxygen design, prescription and management.

Methods

A qualitative design was used, involving semi-structured face-to-face interviews informed by a grounded theory approach. Twenty-seven UK community-dwelling COPD patients using NHS prescribed ambulatory systems were recruited. Ambulatory oxygen systems comprised cylinders weighing 3.4 kg, a shoulder bag and nasal cannulae.

Results

Participants reported that they: received no instruction on how to use ambulatory oxygen; were uncertain of the benefits; were afraid the system would run out while they were using it (due to lack of confidence in the cylinder gauge); were embarrassed at being seen with the system in public; and were unable to carry the system because of the cylinder weight. The essential role of carers was also highlighted, as participants with no immediate carers did not use ambulatory oxygen outside the house.

Conclusions

These participants highlighted previously unreported problems that prevented them from using ambulatory oxygen as prescribed. Our novel findings point to: concerns with the lack of specific information provision; the perceived unreliability of the oxygen system; important carer issues surrounding managing and using ambulatory oxygen equipment. All of these issues, as well as previously reported problems with system weight and patient embarrassment, should be addressed to improve adherence to ambulatory oxygen prescription and enhance the physical and social benefits of maintaining mobility in this patient group. Increased user involvement in both system development and service provision planning, could have avoided many of the difficulties highlighted by this study.

Understanding panic disorder in chronic respiratory disease

As well as being physically debilitating, respiratory diseases present significant challenges to the psychological well-being of individuals and their families and are recognized to have an impact on health-care services, resources and time. Panic attacks and disorder are particularly prevalent in people with respiratory conditions and appear to be associated with reduced lung function. However, recent evidence suggests that the aetiology of panic in this area may be related more to underlying psychological processes, which can influence cognitions that are related to the experience of respiratory disease and its symptoms. The aim of this article is to give a brief overview of the literature to identify key psychological factors associated with panic and respiratory diseases. The article concludes that panic has a complex aetiology, which requires the presence of specific respiratory-related cognitions. The self-regulatory model can foster understanding of the combination of beliefs/cognitions that can increase the prevalence of negative mood for patients with respiratory diseases.

Illness perceptions and COPD: an emerging field for COPD patient management

OBJECTIVE

Patients with chronic obstructive pulmonary disease have perceptions of their illness and its management that determine their coping behaviors (e.g., adherence, self-management) and, consequently, their outcomes. This article reviews the empirical literature on illness perceptions in patients with COPD to provide clinicians with information regarding the potential utility of incorporating illness perceptions into clinical COPD care.

METHOD

A literature search in PubMed identified 16 studies examining associations between illness perceptions and outcomes in patients with COPD.

RESULTS

Seven of the 16 papers were from US authors, followed by 3 each from the UK and The Netherlands, and one study each from Australia, Canada, and New Zealand. The first study was published in 1983, and the numbers of patients per study ranged fom 10 to 266. The illness perceptions were those delineated by two theoretical models (cognitive behavioral theory and the Common Sense Model), and they were assessed with open interviews and validated questionnaires. Outcomes were disability, quality of life, and psychological characteristics. The studies revealed clinically meaningful associations between illness perceptions and outcomes.

CONCLUSION

Our review supports the incorporation of illness perceptions into clinical care for patients with COPD. The assessment of illness perceptions should be routine, similar to routine assessments of pulmonary function. Discussing and changing illness perceptions will improve COPD patients' quality of life and reduce their levels of disability. COPD-specific assessments ("diagnosis") of illness perceptions and COPD-specific intervention methods ("therapy") that help change inadequate and maladaptive illness perceptions are research priorities.

Illness representations and psychological distress in patients undergoing coronary artery bypass graft surgery

Preoperative psychological distress has been shown to predict both postoperative distress and subsequent cardiac morbidity in patients undergoing coronary artery bypass graft (CABG) surgery. This study assessed the associations between illness perceptions and psychological well-being among 56 patients awaiting CABG surgery using the Profile of Mood States (POMS) and the Illness Perception Questionnaire-Revised (IPQ-R). Patient perceptions of their illness as chronic were associated with reduced beliefs in both personal control over illness and efficacy of treatment, and increased perceived consequences of illness in terms of life functioning. In addition, psychological distress regarding illness was significantly correlated with psychological distress in general. Reduced illness coherence was also associated with increased psychological distress. Preoperative psycho-education aimed at helping patients better understand their illness, treatment, and its effects may reduce psychological distress, and perhaps improve future well-being as a result.

Longitudinal Risk Factors for Adverse Psychological Functioning Six Months after Coronary Artery Bypass Graft Surgery

This research aimed to identify modifiable risk factors for poor psychological functioning six months post-operatively, using a chronic illness model to explain the relationships between risk factors. Consecutive elective CABG patients ( N = 119) completed self-report measures including optimism, illness representations, self-rated health, social support, coping methods, depression, anxiety and PTSD symptomatology in a repeated measures design. Poor pre-operative psychological functioning was the strongest psychological risk factor for adverse psychological functioning six months post-operatively. Longitudinal support for the chronic illness model examined was limited. Further research to identify modifiable risk factors and pre-operative psychopathology screening to determine individuals at-risk of poor psychological outcome is recommended.

Illness perceptions and quality of life in patients with chronic obstructive pulmonary disease

This study aimed at identifying cognitive and emotional representations relevant for improving health care communication and quality of life (QoL) in patients with chronic obstructive pulmonary disease (COPD). One-hundred-seventy-one COPD outpatients completed questionnaires on illness perceptions and QoL. After controlling for the effects of age, pulmonary function, and dyspnea, patients with decreased attention to symptoms, with more positive beliefs about the effects and outcomes of their illness, and with less strong emotional reactions to the illness, had higher QoL scores. The results of this study are discussed in relation to the associations found in other illnesses.

Sexuality in patients with asthma and COPD

Sexual quality of life was examined in 55 outpatients with chronic obstructive pulmonary disease (COPD) and asthma, using disease-specific questionnaires. Compared to an age- and sex-matched norm group, male patients with COPD reported a significantly lower sexual quality of life on all dimensions of the questionnaire. Female patients with COPD reported a lower frequency of sexual intimacy and lower sexual quality of life overall. Patients with asthma reported sexual quality-of-life scores that were somewhat better than COPD patients but worse than the healthy control group. Patients reported that they did not discuss sexual quality-of-life issues with their physician. Sexuality needs to be discussed by the health care provider in the consultation in order to improve quality of life of patients with chronic respiratory disorders.

Contents of lay illness models dimensions for physical and mental diseases and implications for health professionals

OBJECTIVE

The main aim of this study was to establish the contents of the lay illness models on depression, cancer, hypertension, schizophrenia and influenza in healthy and ill people suffering from these diseases who have/have not coexisted with people with these health alterations.

METHODS

Dimensions of lay illness models for depression, schizophrenia, cancer, hypertension and influenza were assessed in 348 people (62.6% women) aged 13-50 (M=20.72; S.D.=5.96) with different personal experience with the studied diseases.

RESULTS

Lay illness beliefs are usually close to medical knowledge, but in some relevant cases they are very divergent from this. Experience with the disease (to have suffered from it or to have coexisted with an ill relative) seems to have a great influence in the contents of lay illness models.

CONCLUSION

People's representations on illnesses are not complete or correct at all, and this will have, as the Common Sense Model establishes, relevant repercussions on individuals' behaviors in relation to health and illness and on the outcomes of diseases.

PRACTICE IMPLICATIONS

To know the personal illness models for physical and mental health threats of healthy and ill people with different personal experience with the disease has important implications for health professionals' promotion and prevention strategies and clinical (treatment/rehabilitation) actuations.

Do illness perceptions predict health outcomes in primary care patients? A 2-year follow-up study

OBJECTIVE

Little is known about whether illness perceptions affect health outcomes in primary care patients. The aim of this study was to examine if patients' illness perceptions were associated with their self-rated health in a 2-year follow-up period.

METHODS

One thousand seven hundred eighty-five primary care patients presenting a new or recurrent health problem completed an adapted version of the illness perception questionnaire and the Medical Outcomes Study 36-Item Short-Form Health Survey (SF-36) at baseline and 3, 12, and 24 months' follow-up. Linear regressions were performed for (1) all patients, (2) patients without chronic disorders presenting physical disease, and (3) patients presenting medically unexplained symptoms (MUS).

RESULTS

Negative illness perceptions were associated with poor physical and mental health at baseline. They most strongly predicted changes in health status at follow-up for the whole group of patients. Patients presenting with MUS had more negative illness perceptions and lower mental and physical components subscale of the SF-36 scores at all time points.

CONCLUSIONS

Patients' perception of a new or recurrent health problem predicts self-reported physical and mental health up to 2 years after consulting the general practitioner and offers an obvious starting point for addressing nonbiomedical aspects of illness.

Application of a chronic illness model as a means of understanding pre-operative psychological adjustment in coronary artery bypass graft patients

OBJECTIVES

To increase understanding of the factors associated with pre-operative psychological adjustment in coronary artery bypass graft (CABG) patients by assessing the utility of a chronic illness model developed by Scharloo, Kaptein, Weinman, Willems, and Rooijmans (2000).

DESIGN

A cross-sectional design was employed.

METHOD

Elective CABG patients (N=119) completed self-report measures of illness representation, self-rated health, social support, coping methods, and pre-operative adjustment (depression and post-traumatic stress disorder (PTSD) symptomatology) an average of 30 days prior to surgery. Hierarchical multiple regression was used to assess the mediational relationships proposed by the chronic illness model.

RESULTS

Five 3-variable mediational chains were assessed. In all instances, the results conformed to the relationships suggested by the chronic illness model where the strength of the relationship between the independent and dependent variables was reduced when the mediator variable was controlled. However, a significant reduction of this relationship was found in three of the five chains examined. The most rigorous support for the model occurred, where increased use of avoidance coping mediated the relationship between poorer self-rated health and increased PTSD symptomatology, and also where increased use of avoidance coping partially mediated the relationship between a more negative illness representation and increased PTSD symptomatology, and poorer self-rated health and increased depression.

CONCLUSIONS

The chronic illness model of Scharloo and colleagues shows potential in explaining pre-operative adjustment in CABG patients. Longitudinal examination of the model is recommended.