Predicting Health-Related Quality of Life in Patients with Chronic Obstructive Pulmonary Disease: The Impact of Age.

BACKGROUND: Chronic obstructive pulmonary disease (COPD) is a major cause of morbidity in the elderly population. COPD leads to a reduced health-related quality of life (HRQL), but the factors which contribute to this are not well understood. A better understanding of the factors which determine HRQL should lead to an improved care for such patients. OBJECTIVES: The purpose of this study was to investigate possible age-related differences in HRQL in a population of patients with a similar severity of obstruction. METHODS: A total of 180 consecutive COPD patients were enrolled into the study. We analyzed spirometric data, BODE index and its components, and comorbidities were assessed by the Charlson index. HRQL was assessed by the Clinical COPD Questionnaire (CCQ) and St. George's Respiratory Questionnaire (SGRQ). RESULTS: The cohort consisted of 93 'younger' patients (mean age 54.8 ± 3.1 years) and 87 older patients (mean age 73.1 ± 5.5 years). Patients in both groups had a similar severity of obstruction: FEV1 (% from predicted) was 39.9 ± 13.2% in the elderly group compared to 41.7 ± 11.7% in the younger group (p > 0.05). The forward stepwise regression analysis shows that the BODE index, the Charlson index, and the rate of exacerbations are important predictors of deterioration of HRQL in elderly COPD patients, which explains 29% of the total SGRQ score. In the younger COPD patients, the coefficient of determination R2 was 0.27, but the predictors were the BODE index and the rate of exacerbations. CONCLUSIONS: The BODE index, the Charlson index, and the rate of exacerbations were found to be the major determinants of HRQL in elderly COPD patients, while in younger COPD patients, the BODE index and the rate of exacerbations were influential factors.

Contribution of psychological factors in dropping out from chronic obstructive pulmonary disease rehabilitation programs.

Significant positive effects, particularly on psychological state in patients who completed the follow-up pulmonary rehabilitation programs, are indicated by a large number of studies. Yet, a remarkable proportion of selected patients drop out from these programs. In this study, we investigated existing differences on psychological variables among COPD patients who complete and those who drop out from pulmonary rehabilitation programs. The study included 144 patients, 43 (29.9%) of whom did not complete the program. SCL-90 was used for the assessment of psychological symptoms. On the SCL-90-R scale 55.6% of patients had abnormal findings. Patients who discontinued the program had higher rates of depression and somatization compared to those who completed it. Regarding the psychopathology scales of SCL-90R, we found that patients who discontinued the program showed higher levels of psychopathology on the scales of somatization, depression, paranoid ideation, and psychotism compared to those who completed the program. The final regression model showed that patients with low educational status and psychotism were more likely to leave the program. In conclusion, psychopathology contributes to patients dropping out from a COPD rehabilitation program; thus, psychological assessment prior to inclusion in rehabilitation programs may reduce dropouts.

A pulmonary rehabilitation program reduces levels of anxiety and depression in COPD patients.

BACKGROUND: The presence of anxiety and depressive symptoms in COPD patients has been acknowledged for many years. The preponderance of recent studies supports the utility of pulmonary rehabilitation programs to reduce the levels of depression and anxiety in these patients. The aim of this study is to investigate possible changes in levels of anxiety and depression among patients enrolled in a pulmonary rehabilitation program, along with the role of disease severity in these changes. METHODS: In 101 COPD patients, who attended a pulmonary rehabilitation program, levels of trait anxiety (STAI) and depressive symptoms (BDI) were assessed at the beginning and at the end of the program. Age, sex, level of education in years and stage of disease severity were recorded. RESULTS: Our study included 80 male and 21 female patients. Mean age and mean education level were 64.1 ± 8.1 and 11.3 ± 4.1 years, respectively. Regarding COPD staging, 11 patients suffered from mild, 16 from moderate, 47 from severe and 27 from very severe COPD. Significant decreases in anxiety (from 39.7 to 34.0, p < 0.001) and depression rates (from 10.7 to 6.3, p < 0.001) were observed. A statistically significant reduction in anxiety and depression was revealed (p < 0.05)at all stages of COPD. CONCLUSION: Pulmonary rehabilitation programs should be offered to all COPD patients irrespective of disease severity, since they all lead to improvement in anxiety and depressive symptoms.

Psychological symptom patterns and vital exhaustion in outpatients with chronic obstructive pulmonary disease.

BACKGROUND: Several studies have reported high prevalence of anxiety and depression in chronic obstructive pulmonary disease (COPD) outpatients. Moreover, these patients share psychological or psychopathological characteristics that inhibit their ability to cope with the disease. In the present study we aimed to record the prevalence of psychological symptom patterns in a sample of Greek COPD outpatients and to assess which psychological factors (and to which degree) contribute to vital exhaustion (VE). METHODS: The study included 139 COPD outpatients. We used the Symptom Checklist 90 - Revised (SCL-90-R) and the Maastricht Questionnaire (MQ) in order to evaluate psychological symptom patterns and VE, respectively. RESULTS: The mean MQ score was 19.6, which is significantly higher than the corresponding score in the general population. Regarding the SCL-90-R dimensions, depression was the highest followed by somatization, obsessive-compulsive and anxiety dimensions. Additionally, a positive correlation was observed between the MQ and the SCL-90-R dimensions. MQ failed to demonstrate correlation with age, gender, education level or the severity of the disease. Depression seems to be responsible for 57.9% of the variation of VE, while obsessive-compulsiveness is responsible for an additional 2.4%. All the remaining dimensions of SCL-90-R had no statistically significant contributions. CONCLUSIONS: Our findings suggest the high prevalence of VE, together with high rates in most of the SCL-90-R dimensions with greater depression, somatization, obsessive-compulsiveness and anxiety in a Greek COPD group at various Global Initiative for Chronic Obstructive Lung Disease (GOLD) diagnostic criteria stages. The coexistence of such symptoms should be further assessed as an eventual unfavorable prognostic factor.