Samantha L. Harrison

Ultrasound assessment of lower limb muscle mass in response to resistance training in COPD

BackgroundQuantifying the improvements in lower limb or quadriceps muscle mass following resistance training (RT), is an important outcome measure in COPD. Ultrasound is a portable, radiation free imaging technique that can measure the size of superficial muscles belonging to the quadriceps group such as the rectus femoris, but has not been previously used in COPD patients following RT. We compared the responsiveness of ultrasound derived measures of quadriceps mass against dual energy x-ray absorptiometry (DEXA), in patients with COPD and healthy controls following a programme of high intensity knee extensor RT.MethodsPortable ultrasound was used to assess the size of the dominant quadriceps in 45 COPD patients and 19 healthy controls-before, during, and after 8 weeks of bilateral high intensity isokinetic knee extensor RT. Scanning was performed at the mid-thigh region, and 2 indices of quadriceps mass were measured-rectus femoris cross-sectional area (RFcsa) and quadriceps muscle thickness (Qt). Thigh lean mass (Tdexa) was determined by DEXA.ResultsTraining resulted in a significant increase in Tdexa, RFcsa and Qt in COPD patients [5.7%, 21.8%, 12.1% respectively] and healthy controls [5.4%, 19.5%, 10.9 respectively]. The effect size for the changes in RFcsa (COPD= 0.77; Healthy=0.83) and Qt (COPD=0.36; Healthy=0.78) were greater than the changes in Tdexa (COPD=0.19; Healthy=0.26) following RT.ConclusionsSerial ultrasound measurements of the quadriceps can detect changes in muscle mass in response to RT in COPD. The technique has good reproducibility, and may be more sensitive to changes in muscle mass when compared to DEXA.Trial registrationhttp://www.controlled-trials.com (Identifier: ISRCTN22764439)

We are not worthy--understanding why patients decline pulmonary rehabilitation following an acute exacerbation of COPD.

Abstract Purpose: To explore how patients who refuse referral to Pulmonary Rehabilitation (PR) appraise acute exacerbations of Chronic Obstructive Pulmonary Disease (COPD), in the context of having considered and declined PR. Method: Six participants recently hospitalized with an acute exacerbation COPD who refused a referral to PR subsequent to hospital discharge participated in in-depth interviews. Transcripts were subjected to Interpretative Phenomenological Analysis (IPA). Results: Three conceptual themes emerged comprising: “Construction of the self”, reflecting the impact of the acute exacerbation on personal identity; “Relinquishing control”, describing participants” struggle to maintain agency following an acute event; and “Engagement with others”, embodying participants’ sensitivity and responsiveness to interactions with others. Conclusions: Prominent in theses participants’ narratives are self-conscious cognitions which appear founded in shame and stigmatization. These cognitions seem to reflect challenges to self-worth and appear associated with reduced help-seeking and isolation. Perceived personal culpability for COPD appears to sensitize participants’ towards their interactions with health care professionals, construed as critical and judgmental which may increase avoidant behaviors, such as refusal of PR. When introducing PR, professionals should be aware of such sensitivities and facilitate open discussion which offers, time, compassion and understanding as a means of facilitating uptake. Implications for Rehabilitation Patients who decline referral to Pulmonary Rehabilitation report self-conscious cognitions (i.e. shame, guilt, fear of others evaluation) associated with lowered self-worth and reduced help-seeking. When introducing Pulmonary Rehabilitation health care professionals need to be mindful of patients’ sensitivities to being shamed which stem from perceived culpability for COPD. Professionals should facilitate an open discussion with patients which offers, time, compassion and understanding as a means of facilitating Pulmonary Rehabilitation uptake. Compassion focused interventions which encourage trust and safety may promote active partnership working and facilitate engagement in Pulmonary Rehabilitation.

The development and pilot testing of the Self-management Programme of Activity, Coping and Education for Chronic Obstructive Pulmonary Disease (SPACE for COPD)

Purpose There is no independent standardized self-management approach available for chronic obstructive pulmonary disease (COPD). The aim of this project was to develop and test a novel self-management manual for individuals with COPD. Patients Participants with a confirmed diagnosis of COPD were recruited from primary care. Methods A novel self-management manual was developed with health care professionals and patients. Five focus groups were conducted with individuals with COPD (N = 24) during development to confirm and enhance the content of the prototype manual. The Self-management Programme of Activity, Coping and Education for Chronic Obstructive Pulmonary Disease (SPACE for COPD) manual was developed as the focus of a comprehensive self-management approach facilitated by health care professionals. Preference for delivery was initial face-to-face consultation with telephone follow-up. The SPACE for COPD manual was piloted with 37 participants in primary care. Outcome measures included the Self-Report Chronic Respiratory Questionnaire, Incremental Shuttle Walk Test, and Endurance Shuttle Walking Test (ESWT); measurements were taken at baseline and 6 weeks. Results The pilot study observed statistically significant improvements for the dyspnea domain of the Self-Report Chronic Respiratory Questionnaire and ESWT. Dyspnea showed a mean change of 0.67 (95% confidence interval 0.23–1.11, P = 0.005). ESWT score increased by 302.25 seconds (95% confidence interval 161.47–443.03, P < 0.001). Conclusion This article describes the development and delivery of a novel self-management approach for COPD. The program, incorporating the SPACE for COPD manual, appears to provoke important changes in exercise capacity and breathlessness for individuals with COPD managed in primary care.

Age-specific normal values for the incremental shuttle walk test in a healthy British population.

PURPOSE: The Incremental Shuttle Walk Test (ISWT) is an important functional and prognostic marker in chronic disease. Aging has a detrimental effect on exercise performance. The objective of this study was to produce normal age-specific values for the ISWT in a healthy British population and to explore whether additional variables improve the accuracy of a predictive equation. METHODS: Healthy subjects (N = 152), aged 40 to 90 years, were recruited. Data collection occurred over 2 study visits. Anthropometric and demographic data were collected, and lung function and quadriceps maximal voluntary contraction were measured. An accelerometer was worn for 2 consecutive days at home. The Duke Activity Status Index was completed, and the greatest distance from 2 ISWTs was recorded. RESULTS: One hundred forty subjects (56 men) with mean age (SD) of 59.4 (11.0) years completed 2 ISWTs. Forced expiratory volume in 1 second (FEV1) was 109.1% (14.56%) predicted and ISWT distance was 737 m (183 m). Age-specific normal values for the ISWT were observed: mean (lower limit of normal)—40 to 49 years, 824 m (765 m); 50 to 59 years, 788 m (730 m); 60 to 69 years, 699 m (649 m); and 70 years and older, 633 m (562 m). A predictive equation was developed from 114 subjects. Age, body mass index, FEV1, quadriceps maximal voluntary contraction, and Duke Activity Status Index contributed to ISWT distance predicting 50.4% of the variation in performance. CONCLUSION: We have developed age-specific normal values for performance on the ISWT in a healthy British population. However, even using practical, clinically relevant variables, it is not possible to accurately predict exercise capacity from a regression equation.

Self-management following an acute exacerbation of COPD: a systematic review.

BACKGROUND Self-management (SM) reduces hospital admissions in patients with stable COPD. However, its role immediately post-acute exacerbation (AE) is unclear. The objectives of this review were to describe SM interventions delivered immediately following an AE of COPD (AECOPD) and to conduct a systematic review with meta-analysis of its impact on health-care utilization and health outcomes. METHODS Randomized controlled trials reporting on SM interventions delivered during hospitalization for an AECOPD or within 1 month of hospital discharge were included. Seven articles were identified. Data were extracted and assessed for quality by two researchers. RESULTS By definition, all interventions included action plans, education, and at least two SM skills. Nurses were responsible for providing all SM interventions. The delivery and follow-up periods varied widely. At 12 months, there were no significant differences between those who completed the SM intervention and control subjects in the number of patients readmitted to hospital (P = .38), or in health-related quality of life (P = .27). No effects were found on rate of mortality, depressive symptoms, primary care usage, or exercise capacity. Minimal effects were found on self-efficacy, anxiety symptoms, and health promoting behavior. SM was associated with positive effects on knowledge and management of an AECOPD. CONCLUSIONS SM interventions delivered immediately post-AE vary widely and outcome measures are inconsistent, making it difficult to draw strong recommendations regarding its effectiveness. The evaluation of SM interventions, delivered by trained health-care professionals to selected patients and which offer structured follow-up, appears necessary.

“Consumed by breathing” - A critical interpretive meta-synthesis of the qualitative literature

Objective To derive an improved understanding of how patients respond to, appraise, and understand the experience of an acute exacerbation of chronic obstructive pulmonary disease via a critical interpretive meta-synthesis. Methods Search terms – Exacerbate* OR hospital* AND ‘Chronic obstructive’ OR emphysema OR bronchitis AND interview* OR qualitative. Inclusion criteria – Primary research published in English of patients’ experiences of an acute exacerbation of chronic obstructive pulmonary disease. Data extraction and synthesis – eight papers were identified. Data were extracted by three researchers and constructs elicited via reciprocal translational analysis. Findings Themes reflected two domains of understanding an acute exacerbation: (1) Acute effect – encompassing intense emotions, somatic awareness and patients need for rescue. (2) Sustained regulation – reflecting life as interrupted, ongoing beliefs and behaviour and help-seeking. Discussion Acute exacerbations of chronic obstructive pulmonary disease result in heightened patient arousal, vigilance and powerlessness in response to symptoms. Ongoing, psychological interventions which promote partnership working by both acknowledging patients fear and shaping their appraisals may mitigate distress, enhancing the impact of health messages and engagement in pulmonary rehabilitation.

Important, misunderstood, and challenging: a qualitative study of nurses’ and allied health professionals’ perceptions of implementing self-management for patients with COPD

Background In light of the growing burden of COPD, there is increasing focus on the role of self-management for this population. Currently, self-management varies widely. Little is known either about nurses’ and allied health professionals’ (AHPs’) understanding and provision of self-management in clinical practice. This study explores nurses’ and AHPs’ understanding and implementation of supported COPD self-management within routine clinical practice. Materials and methods Nurses and AHPs participated in face-to-face semistructured interviews to explore their understanding and provision of COPD self-management, as well as their perceptions of the challenges to providing such care. Purposive sampling was used to select participants from a range of professions working within primary, community, and secondary care settings. Three researchers independently analyzed each transcript using a thematic approach. Results A total of 14 participants were interviewed. Nurses and AHPs viewed self-management as an important aspect of COPD care, but often misunderstood what it involved, leading to variation in practice. A number of challenges to supporting self-management were identified, which related to lack of time, lack of insight regarding training needs, and assumptions regarding patients’ perceived self-management abilities. Conclusion Nurses and AHPs delivering self-management require clear guidance, training in the use of effective self-management skills, and education that challenges their preconceptions regarding patients. The design of health care services also needs to consider the practical barriers to COPD self-management support for the implementation of such interventions to be successful.

How do informal self-care strategies evolve among patients with chronic obstructive pulmonary disease managed in primary care? A qualitative study

Background There is much description in the literature of how patients with chronic obstructive pulmonary disease (COPD) manage their breathlessness and engage in self-care activities; however, little of this is from the perspective of those with less severe disease, who are primarily managed in primary care. This study aimed to understand the self-care experiences of patients with COPD who are primarily managed in primary care, and to examine the challenges of engaging in such behaviors. Methods Semistructured interviews were carried out with 15 patients with COPD as part of a larger project evaluating a self-management intervention. Thematic analysis was supported by NVivo software (version 8, QSR International, Melbourne, Australia). Results Three main themes are described, ie, experiencing and understanding symptoms of COPD, current self-care activities, and the importance of family perceptions in managing COPD. Conclusion Self-care activities evolved spontaneously as participants experienced symptoms of COPD. However, there was a lack of awareness about whether these strategies would impact upon symptoms. Perceptions of COPD by family members posed a challenge to self-care for some participants. Health care professionals should elicit patients’ prior disease experiences and utilize spontaneous attempts at disease management in future self-management. These findings have implications for promoting self-management and enhancing quality of life.

Mindfulness in people with a respiratory diagnosis: A systematic review

OBJECTIVES To describe how mindfulness is delivered and to examine the effect of mindfulness on health-related quality of life (HRQOL), mindful awareness and stress in adults with a respiratory diagnosis. METHOD Five electronic databases were searched. Data were extracted and assessed for quality by two reviewers. RESULTS Data were extracted from four studies. Interventions were based on Mindfulness-Based Stress Reduction and delivered by trained instructors. Recordings of mindfulness were provided for home-based practice. One study targeted the intervention exclusively to anxious individuals with a respiratory diagnosis. Adherence to mindfulness was poor. No effects were seen on disease-specific HRQOL (standardized mean difference (SMD)=-0.21 95% CI: -0.36 to 0.48, p=0.78), mindful awareness (SMD=0.09 95% CI: -0.34 to 0.52, p=0.68) or stress levels (SMD =-0.11 95% CI: -0.46 to 0.23, p=0.51). CONCLUSION Mindfulness interventions, delivered to individuals with a respiratory diagnosis, varied widely in terms of delivery and the outcomes assessed making it difficult to draw any conclusions regarding its effectiveness.

Interpretability of Change Scores in Measures of Balance in People With COPD

BACKGROUND Balance deficits and an increased fall risk are well documented in individuals with COPD. Despite evidence that balance training programs can improve performance on clinical balance tests, their minimal clinically important difference (MCID) is unknown. The aim of this study was to determine the MCID of the Berg Balance Scale (BBS), Balance Evaluation Systems Test (BESTest), and Activities-Specific Balance Confidence (ABC) scale in patients with COPD undergoing pulmonary rehabilitation. METHODS We performed a secondary analysis of data from two studies of balance training in COPD (n = 55). The MCID for each balance measure was estimated using the following anchor and distribution-based approaches: (1) mean change scores on a patient-reported global change in balance scale, (2) optimal cut-point from receiver operating characteristic curves (ROCs), and (3) the minimal detectable change with 95% confidence (MDC95). RESULTS Data from 55 patients with COPD (mean age, 71.2 ± 7.1 y; mean FEV1, 39.2 ± 15.8% predicted) were used in the analysis. The smallest estimate of MCID was from the ROC method. Anchor-based estimates of the MCID ranged from 3.5 to 7.1 for the BBS, 10.2 to 17.4 for the BESTest, and 14.2 to 18.5 for the ABC scale; their MDC95 values were 5.0, 13.1, and 18.9, respectively. CONCLUSIONS Among patients with COPD undergoing pulmonary rehabilitation, a change of 5 to 7 points for the BBS, 13 to 17 points for the BESTest, and 19 points for the ABC scale is required to be both perceptible to patients and beyond measurement error.