Validation of Doloplus-2 among nonverbal nursing home patients--an evaluation of Doloplus-2 in a clinical setting.

BACKGROUND: Pain measurement in nonverbal older adults is best based on behavioural observation, e.g. using an observational measurement tool such as Doloplus-2. The purposes of this study were to examine the use of Doloplus-2 in a nonverbal nursing home population, and to evaluate its reliability and validity by comparing registered nurses' estimation of pain with Doloplus-2 scores. METHOD: In this cross-sectional study, Doloplus-2 was used to observe the pain behaviour of patients aged above 65 years who were unable to self-report their pain. Nurses also recorded their perceptions of patient pain (yes, no, don't know) before they used Doloplus-2. Data on demographics, medical diagnoses, and prescribed pain treatment were collected from patient records. Daily life functioning was measured and participants were screened using the Mini Mental State Examination. RESULTS: In total, 77 nursing home patients were included, 75% were women and the mean age was 86 years (SD 6.6, range 68-100). Over 50% were dependent on nursing care to a high or a medium degree, and all were severely cognitively impaired. The percentage of zero scores on Doloplus-2 ranged from 17% (somatic reactions) to 40% (psychosocial reactions). Cronbach's alpha was 0.71 for the total scale. In total, 52% of the patients were judged by nurses to be experiencing pain, compared with 68% when using Doloplus-2 (p = 0.01). For 29% of the sample, nurses were unable to report if the patients were in pain. CONCLUSIONS: In the present study, more patients were categorized as having pain while using Doloplus-2 compared with nurses' estimation of pain without using any tools. The fact that nurses could not report if the patients were in pain in one third of the patients supports the claim that Doloplus-2 is a useful supplement for estimating pain in this population. However, nurses must use their clinical experience in addition to the use of Doloplus-2, as behaviour can have different meaning for different patients. Further research is still needed about the use of Doloplus-2 in patients not able to self-report their pain.

A first step in the development of an international self-report instrument for physical functioning in palliative cancer care: a systematic literature review and an expert opinion evaluation study.

Decline in physical functioning (PF) in progressive cancer increases risk of psychological problems, dependence, and distress, and it considerably affects quality of life. Despite this, assessment of PF has received little attention. Standardized, internationally endorsed assessment tools are needed that assess activities of relevance to palliative cancer patients from very low to high levels of PF. This study was done in cooperation with the European Association for Palliative Care Research Network. It was initiated to develop a computer-based symptom-assessment tool and aimed to 1) identify relevant existing PF-assessment instruments, 2) extract relevant items and classify them into meaningful subdimensions, and 3) construct unidimensional scales of selected PF domains. A systematic literature review was performed to detect relevant PF items from existing instruments. The International Classification of Functioning and Health was used to decide relevant subdimensions of PF, and expert panels within palliative cancer care were consulted to make decisions on activities to be included. One hundred and thirty-five instruments containing 743 items were included from the literature review. Two relevant PF subdimensions were revealed: Mobility (386 items representing 65 different activities) and Self-Care (143 items representing 30 different activities). The final PF tool consisted of two unidimensional scales: 24 hierarchically ranked Mobility items ranging from turning in bed to running, and 16 non-hierarchically ranked Self-Care items. Further testing of the instrument in a palliative cancer population is needed to develop the final PF instrument.

Pain in elderly hospitalized cancer patients with bone metastases in Norway.

AIM: To examine differences in reported pain, pain management and satisfaction with pain management between middle-aged and elderly patients. The study also examined differences in global quality of life (QoL) and pain interference with patient function between middle-aged and elderly patients with bone metastases. METHOD: A one-day prevalence study was performed, targeting hospitalized cancer patients 18 years and over in Norwegian hospitals; 79 patients with bone metastases were included. RESULTS: In total, 89% of patients reported daily pain, and there was no significant difference between the two age groups (p=0.52). Elderly patients reported significantly higher scores for 'worst pain' (p=0.036) and 'pain severity intensity' (p=0.027), but received strong opioids for their cancer pain significantly less often than middle-aged patients (p=0.024). We found a significant linear association between increasing age and decreasing scores on Cleeland's pain management index (p=0.002). There were no statistically significant differences between age groups in satisfaction with pain management, pain interference with functioning or global QoL. CONCLUSION: These results indicate that more focus is needed on pain management in elderly cancer patients with bone metastases.

The Brief Pain Inventory: pain's interference with functions is different in cancer pain compared with noncancer chronic pain.

OBJECTIVES: The Brief Pain Inventory (BPI) is a highly recommended and frequently used multidimensional pain assessment tool. The BPI includes 2 dimensions: pain intensity and pain's interference with functions. Our aims were to explore how patients respond to pain interference items by comparing responses from patients who had cancer with patients who had noncancer chronic pain (NCCP), and to explore how different levels of health-related quality of life affect upon pain's interference with functions. METHODS: Three hundred patients with cancer and 286 patients with NCCP were asked to complete the BPI and the European Organization for Research and Treatment of Cancer's Quality of Life Questionnaire (EORTC QLQ-C30). The pain interference items were indexed into total interference, interference with physical functions, and interference with psychologic functions. Regression analyses were used to explore differences in pain's interference by group, pain intensity, and a possible interaction effect between them. The analyses were adjusted for age, sex, and all EORTC QLQ-C30 scales. RESULTS: The cancer patients reported higher values of physical interference than NCCP patients with the same level of pain intensity (P<0.001). NCCP patients reported higher values of psychologic interference than cancer patients (P=0.023). For total interference, these effects eliminated each other. When adjusting for age, sex, and the EORTC QLQ-C30 subscales, the results still remained significant except that adjusting for the subscale for physical function made the group effect insignificant for physical interference (P=0.30). DISCUSSION: The results indicate that patients are unable to report isolated pain's interference using the BPI. When reporting pain's interference with physical functioning, the level of physical functioning is more important than the level of pain. Patients' diagnoses have to be taken into account when interpreting reported pain's interference with functions.

Doloplus-2, a valid tool for behavioural pain assessment?

BACKGROUND: The Doloplus-2 is used for behavioural pain assessment in cognitively impaired patients. Little data exists on the psychometric properties of the Doloplus-2. Our objectives were to test the criterion validity and inter-rater reliability of the Doloplus-2, and to explore a design for validations of behavioural pain assessment tools. METHODS: Fifty-one nursing home patients and 22 patients admitted to a geriatric hospital ward were included. All were cognitively impaired and unable to self-report pain. Each patient was examined by an expert in pain evaluation and treatment, who rated the pain on a numerical rating scale. The ratings were based on information from the medical record, reports from nurses and patients (if possible) about pain during the past 24 hours, and a clinical examination. These ratings were used as pain criterion. The Doloplus-2 was administered by the attending nurse. Regression analyses were used to estimate the ability of the Doloplus-2 to explain the expert's ratings. The inter-rater reliability of the Doloplus-2 was evaluated in 16 patients by comparing the ratings of two nurses administrating the Doloplus-2. RESULTS: There was no association between the Doloplus-2 and the expert's pain ratings (R2 = 0.02). There was an association (R2 = 0.54) between the expert's ratings and the Doloplus-2 scores in a subgroup of 16 patients assessed by a geriatric expert nurse (the most experienced Doloplus-2 administrator). The inter-rater reliability between the Doloplus-2 administrators assessed by the intra-class coefficient was 0.77. The pain expert's ratings were compared with ratings of two independent geriatricians in a sub sample of 15, and were found satisfactory (intra-class correlation 0.74). CONCLUSION: It was challenging to conduct such a study in patients with cognitive impairment and the study has several limitations. The results do not support the validity of the Doloplus-2 in its present version and they indicate that it demands specific administration skills.

Pain assessment tools: is the content appropriate for use in palliative care?

Inadequate pain assessment prevents optimal treatment in palliative care. The content of pain assessment tools might limit their usefulness for proper pain assessment, but data on the content validity of the tools are scarce. The objective of this study was to examine the content of the existing pain assessment tools, and to evaluate the appropriateness of different dimensions and items for pain assessment in palliative care. A systematic search was performed to find pain assessment tools for patients with advanced cancer who were receiving palliative care. An ad hoc search with broader search criteria supplemented the systematic search. The items of the identified tools were allocated to appropriate dimensions. This was reviewed by an international panel of experts, who also evaluated the relevance of the different dimensions for pain assessment in palliative care. The systematic literature search generated 16 assessment tools while the ad hoc search generated 64. Ten pain dimensions containing 1,011 pain items were identified by the experts. The experts ranked intensity, temporal pattern, treatment and exacerbating/relieving factors, location, and interference with health-related quality of life as the most important dimensions. None of the assessment tools covered these dimensions satisfactorily. Most items were related to interference (231) and intensity (138). Temporal pattern (which includes breakthrough pain), ranked as the second most important dimension, was covered by 29 items only. Many tools include dimensions and items of limited relevance for patients with advanced cancer. This might reduce compliance and threaten the validity of the assessment. New tools should reflect the clinical relevance of different dimensions and be user-friendly.

Attitudes towards, and wishes for, euthanasia in advanced cancer patients at a palliative medicine unit.

BACKGROUND: Most studies on attitudes towards euthanasia and physician-assisted suicide (PAS) have been conducted in healthy populations. The aim of this study is to explore and describe attitudes towards, and wishes for, euthanasia/PAS in cancer patients with short life expectancy. METHOD: Semi-structured interviews with 18 cancer patients with a life expectancy of less than nine months. All patients were recruited from an inpatient palliative medicine unit. RESULTS: Patients holding a positive attitude towards euthanasia/PAS do not necessarily want euthanasia/PAS for themselves. Wishes are different from requests for euthanasia/PAS. Fear of future pain and a painful death were the main reasons given for a possible wish for euthanasia/PAS. Worries about minimal quality of life and lack of hope also contributed to such thoughts. Wishes for euthanasia/PAS were hypothetical; they were future oriented and with a prerequisite that intense pain, lack of quality of life and/or hope had to be present. Additionally, wishes were fluctuating and ambivalent. CONCLUSION: The wish to die in these patients does not seem to be constant. Rather, this wish is more appropriately seen as an ambivalent and fluctuating mental 'solution' for the future. Health care providers should be aware of this when responding to utterances regarding euthanasia/PAS.

The Norwegian Doloplus-2, a tool for behavioural pain assessment: translation and pilot-validation in nursing home patients with cognitive impairment.

BACKGROUND: Pain assessment is challenging in cognitively impaired (CI) patients due to inadequate self-report skills and observational ratings are an alternative. The Doloplus-2 is developed for pain assessment in the CI and rates somatic, psychomotor and psychosocial behaviours as indicators of pain. AIMS: To translate the Doloplus-2 into Norwegian, to test the Doloplus-2 with regard to criterion validity and to obtain the administrators' evaluation of the clinical performance of the Doloplus-2. METHODS: Nurses at three nursing homes, in collaboration with two research assistants, administered the Doloplus-2 to 59 patients with dementia. The results were compared against experienced clinicians' pain ratings. Regression analyses were performed to explore each different item's contribution to the total pain score. The administrators also completed a debriefing questionnaire. RESULTS: The instrument was translated according to international guidelines. Regression analyses demonstrate that the Doloplus-2 score accounts for 62% (R2) of the expert score and that the four most informative items could explain 68% of the expert score. Analyses of the different Doloplus-2 items indicate that facial expressions explain most and social life least of the expert's pain ratings. The administrators reported that Doloplus-2 was helpful and easy to administer, but questioned the validity of the psychosocial domain. CONCLUSIONS: The Norwegian Doloplus-2 demonstrates satisfactory criterion validity and clinical value in this pilot study. However, the content of the instrument needs a general re-evaluation, especially with regard to the psychosocial items.

[Pain assessment in cognitively impaired elderly patients]. / Smertemålinger hos eldre med kognitiv svikt.

BACKGROUND: Pain assessment in nursing home patients is often challenging because of cognitive failure. Demented patients receive less optimal pain treatment than those who are cognitively intact. Inappropriate pain assessment is likely to be an important reason for problems with proper diagnosis and treatment of pain in the cognitively impaired. Self-report of pain by standardized questionnaires is recommended for those with mild cognitive failure. For those who are unable to self-report, observational assessment is an alternative. MATERIALS AND METHODS: Structured pain assessment tools are reviewed, with emphasis on their feasibility in cognitively impaired patients. RESULTS: Several assessment tools for observational pain assessment are available, but none of them is satisfactory validated. Observational tools are used by a trained observer who rates behaviour indicative of pain according to pre-defined clues. The Checklist of Non-verbal Pain Indicators (CNPI) and the Doloplus-2 are both observational tools that are translated into Norwegian. The Norwegian CNPI is in an early phase of validation, while the Doloplus-2 is tested in a Norwegian pilot validation study with promising results. INTERPRETATION: It is important to establish a common standard for systematic pain assessment in the cognitively impaired, both clinically and in research. Further validation of the CNPI and the Doloplus-2 is recommended.