Chronic pain in elderly people

Metallic taste phantom predicts oral pain among 5-year survivors of head and neck cancer

Chronic pain following cancer-related treatment is emerging as a major concern. Heretofore, the pain level among 5-year survivors of head and neck cancer has received limited attention. This study proposes a predictive model for understanding factors associated with the elevated levels of chronic oral pain. Cancer survivors were drawn from a pool of 5-year survivors. A listed sample matched on sex, age, and zip code was purchased and served as a comparison group. Telephone interviews were conducted by a professional call center. Oral pain levels and the presence of metallic taste phantoms were significantly higher in the cancer survivor group than among the comparison group. The prevalence of chronic oral pain among the 5-year survivors was 43% compared to 13% for the comparison group. Hierarchical linear regression showed that among the 5-year survivors, the predictive model for spontaneous pain accounted for 24% of the variance, and for function-related pain the model accounted for 34% of the variance, with the presence of a phantom metallic taste making a significant independent contribution in both models. In the function-related pain model, depression and level of oral function quality of life (QOL) made significant independent contributions. The presence of oral pain is a significant problem among head and neck cancer survivors. The presence of metallic phantoms is an important new piece of evidence suggesting neural damage following cancer-directed treatment. Routine assessment of oral pain levels could improve current analgesic approaches among head and neck cancer survivors.

Persistent pain biases item response on the Geriatric Depression Scale (GDS): preliminary evidence for validity of the GDS-PAIN

OBJECTIVE

Differential item functioning (DIF) assesses the consistency of items on a metric across clinical samples in relation to the attribute being measured. We hypothesized that in older adults with persistent pain, items of the Geriatric Depression Scale (GDS) would evidence DIF based on presence or intensity of pain.

DESIGN

Unidimensionality was determined by factor and item analyses. DIF was tested using Rasch Modeling. We then evaluated the psychometric properties of a revised GDS (GDS-PAIN), comprised of items that did not evidence DIF. PATIENT AND SETTINGS: A total of 677 community dwelling older adults (age 65-91) participating in observational or treatment studies of low back or knee pain who endorsed at least moderate pain for at least 3 months. A total of 201 pain-free controls were included in the analysis.

RESULTS

Ten of the 30 items displayed significant DIF. These items were: 1) dropping activities and interests; 2) bothered by persistent thoughts; 3) often get fidgety and restless; 4) prefer to stay home; 5) do not feel full of energy; 6) do not enjoy getting up in the morning; 7) mind is not as clear as it was, 8) feel life is empty; 9) feel more problems with memory; and 10) do not find life very exciting. The modified GDS-PAIN scale did not adversely affect the psychometric properties of the scale.

CONCLUSIONS

The performance of the GDS is affected by pain. When unstable items are removed, the revised GDS (GDS-PAIN) appears to be psychometrically stable and maintains both internal consistency and similar correlation values with a measure of pain as the original scale.

Pain reporting by very old Swedish community dwellers: the role of cognition and function

BACKGROUND AND AIMS

Pain is a common and unpleasant problem among elderly people and affects the possibility for them to remain living in their own homes. The aims of this study were therefore to report the prevalence of pain reporting and pain treatment, and their association with functional and cognitive status in a very old population.

METHODS

Cross-sectional population-based study. Participants were 333, aged 84 years or older, living at home alone or with someone in Kungsholmen, in central Stockholm, Sweden. Information on pain was obtained from interviews. The Mini- Mental State Examination (MMSE) measured cognitive status and the index of basic Activities of Daily Living (ADL) functional status. Descriptive statistics were used to describe the population and logistic regression models to investigate factors associated with pain reporting and pain treatment.

RESULTS

The prevalence of pain was 46%, and the prevalence of pain treatment 71%. Results from logistic regression analysis including all variables in the model showed that pain reporting was not associated with age, gender or living conditions. However, pain reporting was correlated with cognitive and functional status. There was no association between pain treatment and age, gender, living conditions, cognitive or functional status.

CONCLUSIONS

Pain is common among the oldest old. Our results indicate that cognitive and functional status affect pain reporting. Poor cognitive status was associated with less pain reporting, whereas poor functional status was associated with more pain reporting.

Evaluation of the Iowa pain thermometer and other selected pain intensity scales in younger and older adult cohorts using controlled clinical pain: a preliminary study

OBJECTIVE

To evaluate the sensitivity and utility of the Iowa Pain Thermometer (IPT) and other selected pain intensity scales in younger and older adults using a controlled clinical pain condition.

DESIGN

A quasi-experimental study with 61 younger (age 21-55 years) and 36 older (age 65-87 years) adults experiencing arthritic pain at two rheumatology clinics. Before and after joint injection, patients reported current pain intensity with the following scales: IPT, Numeric Rating Scale (NRS), Verbal Numeric Rating Scale (VNS), Faces Pain Scale (FPS), and Visual Analog Scale (VAS).

RESULTS

The IPT demonstrated the lowest failure rate of all pain intensity scales evaluated. Other scale failure rates were relatively low except for the VNS and the VAS. No significant difference was noted in scale failure by age, gender or education level, but cognitive impairment was significantly related to failure on the VAS and the NRS. All five pain scales were sensitive in detecting changes in pain intensity pre and post joint injection. All correlations between the scales were strong and significant; however, the intercorrelations for the older cohort were weaker. The scale most preferred in both cohorts of patients was the IPT, followed by the FPS.

CONCLUSIONS

Based on sensitivity to change, lower failure rates, higher preference evaluations, and little appreciable affects associated with cognitive impairment, the IPT was judged to be the best choice for assessing pain intensity for both age cohorts and warrants further study.

Multi-disciplinary interpretations of pain in older patients on medical units

The aim of this study was to assess the knowledge and attitudes of the health care team caring for older patients on acute medical wards. Pain is probably the most distressing symptom experienced by hospital patients. Pain management has traditionally been seen as part of the anaesthetist's role, within the UK, establishment of acute pain teams was a response to the report 'pain after surgery' which cemented the link between pain and surgery. However, in 2004-2005, 63% of admissions to general medicine in the UK were individuals in the 60+ age group suggesting that older people are significant users of general medicine services. Treatment of pain is multi-disciplinary and effective pain management should be a universal response by health care professionals and non-professionals. A questionnaire was distributed to all nurses; registered and non-registered, junior doctors who worked on the acute medical wards, all physiotherapists and all pharmacists in the hospital. There were varying levels of pain management education identified across the professional groups and, whilst there is a reasonable level of pain knowledge both general and specific to the older person, there is still a need to improve the knowledge and attitudes of all health care professional groups caring for older patients in pain on acute medical wards.

Mobilization-Observation-Behavior-Intensity-Dementia Pain Scale (MOBID): development and validation of a nurse-administered pain assessment tool for use in dementia

Pain assessment in older persons with severe cognitive impairment (SCI) is a challenge due to reduced self-report capacity and lack of movement-related pain assessment instruments. The purpose of this article was to describe the development of the Mobilization-Observation-Behaviour-Intensity-Dementia Pain Scale (MOBID) and to investigate aspects of reliability and validity. MOBID is a nurse-administered instrument developed for use in patients with SCI, where presence of pain behavior indicators (pain noises, facial expression, and defense) may be observed during standardized active, guided movements, and then inferred to represent pain intensity. Initially, the MOBID contained seven items (observing at rest, mobilization of the hands, arms, legs, turn over in bed, sitting on bedside, and teeth/mouth care). This was tested in 26 nursing home patients with SCI. Their primary caregivers, five registered nurses and six licensed practical nurses (LPNs), rated the patients' pain intensity during regular morning care, and by MOBID, both at bedside and from video uptakes. Three external raters (LPNs), not knowing the patients, also completed the MOBID by rating the videos. Internal consistency of the MOBID indicated high Cronbach's alpha (alpha=0.90) after deleting the items for observation at rest and observation of teeth/mouth care. MOBID disclosed significantly more pain than did pain scorings during regular morning care, and video observation demonstrated higher pain intensity than bedside scoring. Intertester reliability for inferred pain intensity was high to excellent (intraclass correlation coefficient=0.70-0.96), but varied between poor and excellent for pain behavior indicators (kappa=0.05-0.84). These results suggest that registration of pain behavior indicators during active, guided movements, as performed by the MOBID procedure, is useful to disclose reliable and valid pain intensity scores in patients with SCI.

Relationship between balance performance and musculoskeletal pain in lower body comparison healthy middle aged and older adults

The purpose of this study was to determine relationship between balance performance and pain in lower body among healthy adults. Two hundred and forty volunteer subjects (125 middle aged and 115 elderly people) aged 50 years and above participated. The average age was 61.52+/-8.22 years (range 50-75 years). The functional reach test (FRT) was used to measure balance ability. The visual analog scale (VAS) was used to measure pain intensity. Subjects were also asked to indicate sites they experienced pain in their lower body (e.g., low back, hip, knee, ankle, toes). Falls history was also recorded. The elderly people had a lower FRT score as compared to the middle-aged adults (p<0.001). Knee, low back, and hip pain were most common in both groups. The elderly people reported more frequency of falls than the middle-aged adults. The score of the FRT was higher among men (20.67+/-7.16cm) than among women (18.77+/-6.59cm). In both groups; the women had a higher VAS score than those of matched the men. Although the middle-aged adults had higher and better scores than the elderly people, the data showed that the middle-aged adults are also at risk and should be prepared properly for healthy aging.

Continuous Intrathecal Morphine Infusion in Patients With Vertebral Fractures Due to Osteoporosis

OBJECTIVES

Vertebral fractures are the most common consequences of severe osteoporosis. The chronic pain from collapse of osteoporotic vertebrae affects quality of life (QOL) and autonomy of patients. The management of pain with oral or transdermal opiates can cause severe side effects. Continuous intrathecal administration of morphine via an implantable pump might represent an alternative therapy to conventional oral or transdermal administration of opioids and has some advantages and disadvantages for pain relief and improvement in QOL when compared with conventional opioid delivery. It is our objective to report our experience using intrathecal delivery of analgesics in a population of patients with refractory pain due to vertebral fractures.

MATERIALS AND METHODS

In 24 patients, refractory to conventional delivery of opioids, we used intrathecal analgesic therapy. To test for efficacy and improvement in QOL, we administered the visual analog scale for pain and the Questionnaire of the European Foundation of Osteoporosis (QUALEFFO). Before patients were selected for pump implantation, an intraspinal drug delivery trial was performed to monitor side effects and responses to intrathecal therapy.

RESULTS

Significant pain relief was obtained in all implanted patients. Using the QUALEFFO, we observed significant improvement of all variables such as quality of daily life, domestic work, ambulation, and perception of health status, before and after 1 year after pump implantation. With intrathecal morphine infusion, none of the 24 patients required additional systemic analgesic medication. The mean morphine dose during the spinal trial was 11.28 mg/d, 7.92 mg/d at pump implantation, and 16.32 mg/d at 1-year follow-up.

CONCLUSIONS

Our results show that intrathecal administration of morphine efficiently relieves the symptoms of pain and improves QOL. Continuous intrathecal administration of morphine appears to be an alternative therapy to conventional analgesic drug delivery and has advantages in those patients who have severe side effects with systemic administration of analgesics.

Anaesthesia and palliative care

Palliative medicine provides end-of-life care to terminally ill patients with a focus on pain and symptom management, psychosocial and spiritual support and bereavement follow-up. This article reviews some of the more recent literature on the subject of palliative care focusing on educational barriers to quality palliative care, advances in quality assessment, and advances in pain and symptom management.

Quantification of the pain terms hurt, ache and pain among nursing students

The aim of this study was to determine the quantitative meaning nursing students ascribe to the pain terms hurt (ont), ache (värk) and pain (smärta). In total, 549 nursing students filled in a questionnaire including questions about age, gender, and health care work experience. The students were also requested to rate response using a Visual Analogue Scale (VAS) rating for different statements about hurt, ache and pain. The results show that there were significant differences (p < 0.001) between rated intensity of the statements of hurt, ache and pain. There were, however, large variations in the students' ratings of the pain terms; hurt ranged from 3 to 97 mm, ache from 7 to 97 mm and pain from 27 to 100 mm. There were no significant differences between male and female students regarding their ratings of hurt and ache when they were used to describe the worst self-experienced pain. Female students rated their experience of pain significantly higher (p < 0.001) on the VAS compared with male students. There was no significant correlation between previous experience of health care work and rated intensity of hurt, ache and pain. In conclusion, this study shows that there exist significant differences between the pain terms hurt, ache and pain according to a rating on a VAS. However, the results also demonstrate that there are large individual variations in how the students quantify the fictitious patient statements of hurt, ache and pain.

Mindfulness meditation for the treatment of chronic low back pain in older adults: a randomized controlled pilot study

The objectives of this pilot study were to assess the feasibility of recruitment and adherence to an eight-session mindfulness meditation program for community-dwelling older adults with chronic low back pain (CLBP) and to develop initial estimates of treatment effects. It was designed as a randomized, controlled clinical trial. Participants were 37 community-dwelling older adults aged 65 years and older with CLBP of moderate intensity occurring daily or almost every day. Participants were randomized to an 8-week mindfulness-based meditation program or to a wait-list control group. Baseline, 8-week and 3-month follow-up measures of pain, physical function, and quality of life were assessed. Eighty-nine older adults were screened and 37 found to be eligible and randomized within a 6-month period. The mean age of the sample was 74.9 years, 21/37 (57%) of participants were female and 33/37 (89%) were white. At the end of the intervention 30/37 (81%) participants completed 8-week assessments. Average class attendance of the intervention arm was 6.7 out of 8. They meditated an average of 4.3 days a week and the average minutes per day was 31.6. Compared to the control group, the intervention group displayed significant improvement in the Chronic Pain Acceptance Questionnaire Total Score and Activities Engagement subscale (P=.008, P=.004) and SF-36 Physical Function (P=.03). An 8-week mindfulness-based meditation program is feasible for older adults with CLBP. The program may lead to improvement in pain acceptance and physical function.

A scale to measure pain in non-verbally communicating older patients: the EPCA-2 Study of its psychometric properties

We have constructed and validated the Elderly Pain Caring Assessment 2 (EPCA-2) an 8 items behavioural scale to rate the intensity of pain in non-verbally communicating older (age 65 years) patients (NVC-OP). It was postulated that the assessed pain had two dimensions (signs outside and during caregiving). The first version of the scale was constructed on the basis of the results of a survey among 48 experienced nurses and caregivers and of a review of the literature. After testing of three intermediate versions, the psychometrics properties of the final version were studied on 340 NVC-OP. The face and content validities were good. Convergent validity: the total score was well correlated both with a pain global clinical score given by two highly experienced observers (r(s)=0.846) and with the opioid dose prescribed in a sub-group of patients (r(s)=0.698). The discriminant and divergent validities were satisfactory. After factor analysis, the internal structure of the scale was consistent with the postulated two-dimensional structure of the construct. The inter-rater reliability was very good (ICC=0.877) and is always equally good irrespective of the status (doctor, nurse and caregiver) of the raters. The internal consistency was highly satisfactory (alpha=0.79). The responsiveness evaluated in 4 ways was always very good. EPCA-2 may provided nurses, caregivers and doctors with a validated instrument for pain assessment in NVC-OP.

A survey of Chinese nurses? current knowledge of pain in older people

AIM

To investigate the current level of Chinese nurses' knowledge of pain and pain management in older people.

BACKGROUND

Most research about nurses' knowledge regarding pain has taken place in developed countries; however, limited research in this area has taken place in developing countries and particularly in China.

METHODS

Registered Nurses (n = 621) in three different hospitals were surveyed with the questionnaire about pain and pain management with respect to older people.

RESULTS

The finding showed that a significant knowledge deficit in this area exists. There were no significant differences among nurses in terms of education background, position and whether or not there was attendance in an educational session on pain management. However, there were statistically significant differences based on age; hospital of employment and clinical area in which employed.

CONCLUSION

This survey suggested that nurses' knowledge of pain in older people should be improved. Basic and continuing education of nurses in this area should be enhanced and their active participation in pain management should be encouraged.

RELEVANCE TO CLINICAL PRACTICE

The findings in this survey highlight a significant pain management knowledge deficit among the nurses in the clinical practice. The findings may help the nurses realize their knowledge deficit in this area and may also suggest curriculum changes for the nurses to improve pain management knowledge.

Mind–Body Interventions for Chronic Pain in Older Adults: A Structured Review: Table 1

STUDY DESIGN

We conducted a structured review of eight mind-body interventions for older adults with chronic nonmalignant pain.

OBJECTIVES

To evaluate the feasibility, safety, and evidence for pain reduction in older adults with chronic nonmalignant pain in the following mind-body therapies: biofeedback, progressive muscle relaxation, meditation, guided imagery, hypnosis, tai chi, qi gong, and yoga.

METHODS

Relevant studies in the MEDLINE, PsycINFO, AMED, and CINAHL databases were located. A manual search of references from retrieved articles was also conducted. Of 381 articles retrieved through search strategies, 20 trials that included older adults with chronic pain were reviewed.

RESULTS

Fourteen articles included participants aged 50 years and above, while only two of these focused specifically on persons aged >or=65 years. An additional six articles included persons aged >or=50 years. Fourteen articles were controlled trials. There is some support for the efficacy of progressive muscle relaxation plus guided imagery for osteoarthritis pain. There is limited support for meditation and tai chi for improving function or coping in older adults with low back pain or osteoarthritis. In an uncontrolled biofeedback trial that stratified by age group, both older and younger adults had significant reductions in pain following the intervention. Several studies included older adults, but did not analyze benefits by age. Tai chi, yoga, hypnosis, and progressive muscle relaxation were significantly associated with pain reduction in these studies.

CONCLUSION

The eight mind-body interventions reviewed are feasible in an older population. They are likely safe, but many of the therapies included modifications tailored for older adults. There is not yet sufficient evidence to conclude that these eight mind-body interventions reduce chronic nonmalignant pain in older adults. Further research should focus on larger, clinical trials of mind-body interventions to answer this question.

Perseverance by Older People in Their Management of Chronic Pain: A Qualitative Study: Table 1

INTRODUCTION

Many older people suffer from degenerative and chronic diseases resulting in chronic pain. It is important for health professionals and researchers to gain insights into experiences of chronic pain sufferers, so that they may understand the patient's perspective and instigate appropriate treatments.

AIM

This study set out to gain insights into older people's perceptions about the effect of chronic pain on their lives and how they self-manage it.

DESIGN

A qualitative approach to generating data based on Grounded Theory was chosen. Sixty-three people between the ages of 60 and 87 years participated and were interviewed using audiotape. The interviews were transcribed and subsequently analyzed, and the material was coded and collapsed into themes constituting the final grounded theory.

RESULTS

As the data collection progressed, a major theme of perseverance emerged, supported by two subthemes: * keeping occupied, and * a focus on social activities. It became apparent that the participants were determined to get on with their lives. Those with strong social links appeared to have a more positive outlook on life.

CONCLUSIONS

"Keeping going" was a priority for most of the participants. It may be beneficial to identify the ways in which older people persevere despite chronic pain. It is important for health professionals to appreciate the social factors which are important to, and valued by, older people who experience chronic pain.

Impact of disease characteristics on the efficacy of duloxetine in diabetic peripheral neuropathic pain

OBJECTIVE

To evaluate the impact of baseline disease variables related to diabetes and diabetic neuropathy severity on efficacy and safety of duloxetine in the management of diabetic peripheral neuropathic pain.

RESEARCH DESIGN AND METHODS

The impact of baseline conditions was evaluated using the data from three pooled placebo-controlled studies for combined duloxetine, doses of 60 mg q.d. and 60 mg b.i.d., versus placebo. The primary efficacy measure was the weekly mean of 24-h average pain severity, and night pain was the secondary measure. Safety and tolerability were assessed.

RESULTS

There were no significant (P > 0.10) interactions of treatment by age (< 65 or > or = 65 years), type of diabetes (type 1 or type 2), duration of diabetes (median split < 9.18 or > or = 9.18 years), duration of diabetic neuropathy (< 2, 2 to < 6, or > or = 6 years), severity of diabetic neuropathy (baseline Michigan Neuropathy Screening Instrument score < 5 or > or = 5), baseline A1C level (median split < 7.6 or > or = 7.6%), or baseline insulin use (yes/no). Significant interactions for both pain measures were observed in baseline pain subgroups (Brief Pain Inventory average pain, > or = 6 and < 6). Duloxetine was more effective in the subgroup with more pain. No significant association was found between any other subgroups (P > 0.10). Significant interactions (P < 0.1) occurred with treatment-emergent adverse events when stratified by subgroups.

CONCLUSIONS

Pain severity but not variables related to diabetes or neuropathy may predict the effects of duloxetine in diabetic peripheral neuropathic pain. The efficacy of duloxetine is related to the initial pain severity and is generalizable across a broad spectrum of diabetic patients, including those with the highest severity of diabetes or neuropathy.

Elderly-Onset Systemic Lupus Erythematosus

Systemic lupus erythematosus is an autoimmune multi-system disease of uncertain aetiology with highly variable clinical manifestations. Women of child-bearing age are most often affected; however, approximately 10-20% of cases occur in older patients. Elderly-onset lupus has been defined in various studies as onset of lupus after age 50-65 years. Menopause and changes in cellular immunity with aging may contribute to development of lupus in older adults. Many studies suggest that the clinical and serological features of elderly-onset lupus differ from those of lupus in younger patients. Arthritis, fever, serositis, sicca symptoms, Raynaud's syndrome, lung disease and neuropsychiatric symptoms are more common in patients with elderly-onset lupus, while malar rash, discoid lupus and glomerulonephritis are less common in elderly-onset patients compared with younger lupus patients. Most elderly-onset lupus patients have a positive anti-nuclear antibody test, but the prevalence of anti-double-stranded DNA and hypocomplementaemia is lower in elderly-onset patients than in younger patients. Rheumatoid factor, anti-Ro/Sjögren's syndrome (SS) A and anti-La/SSB are more often positive in elderly-onset patients. The diagnosis of elderly-onset lupus may be delayed for many months: insidious onset, low prevalence and similarity to other more common disorders make the diagnosis of lupus challenging in this population. Treatment of lupus in the elderly may be complicated by co-morbidities and increased risk of toxicities from usual treatments. Optimal management of elderly-onset lupus is empiric because of a lack of randomised controlled studies. However, the approach to treatment is similar regardless of the age of the patient. This article discusses the prevalence, clinical course, serological features, prognosis and treatment of elderly-onset systemic lupus erythematosus.

An Interdisciplinary Expert Consensus Statement on Assessment of Pain in Older Persons

This paper represents an expert-based consensus statement on pain assessment among older adults. It is intended to provide recommendations that will be useful for both researchers and clinicians. Contributors were identified based on literature prominence and with the aim of achieving a broad representation of disciplines. Recommendations are provided regarding the physical examination and the assessment of pain using self-report and observational methods (suitable for seniors with dementia). In addition, recommendations are provided regarding the assessment of the physical and emotional functioning of older adults experiencing pain. The literature underlying the consensus recommendations is reviewed. Multiple revisions led to final reviews of 2 complete drafts before consensus was reached.

Pain and psychiatry: a critical analysis and pharmacological review

Pain is one of the most difficult medical problems to diagnose and treat and can be a common symptom of several psychiatric disorders. Pain-related issues are heterogeneous and often underestimated or misinterpreted, with the result that psychiatric interventions, which might have been beneficial from the outset, are often delayed or requested only as a last measure. Several problems arise from the definition, classification and assessment of pain, when documented according to the different scales which are commonly used, since these attempt to cover a multitude of analytical requirements, without really succeeding. An area of constant debate regards the connection between pain and various psychiatric disorders, and the difficulty in the classification of pain disorders within the currently existing framework. The pharmacological treatment of pain is complex and implies a variety of different compounds, from opioids to psychotropic medications like antidepressants and anticonvulsivants.

This paper explores the mutual and reciprocal influence between pain and psychiatric disorders reviewing the latest developments in the definition, assessment and treatment of pain, with special emphasis on the impact of pain on psychiatric disorders (and vice versa), and on the use of psychotropic drugs in the treatment of pain syndromes.

Opioid escalation in patients with cancer pain: the effect of age

Elderly people are commonly considered more susceptible to opioid effects. However, no data regarding the need for opioid escalation in patients already receiving opioids for the management of chronic pain are available. The purpose of this study was to evaluate the differences between younger and older patients during the crucial phase of opioid titration. One hundred consecutive patients with cancer pain requiring further opioid dose refinement were recruited for this cohort study. Pain intensity, dose of opioids, number of opioids used (need to switch), routes of administration used, and opioid-related symptoms were measured from admission until dose stabilization. Opioid escalation indexes (OEIs) were calculated. For the purpose of analysis, patients were divided into three age groups (<65, 65-74, 75 or over). Despite differences in opioid doses at admission (lower in older patients), no differences were found in routes, need to switch, OEI, or other parameters between younger and older patients. Similarly, adverse effects did not significantly differ between the three groups, although an overall distress score worsened in older patients during acute titration and then improved at stabilization time. These data contradict the assumption that older patients who already receive opioids are more susceptible than younger adults to opioid effects during opioid titration. Although the elderly require lower doses, opioid effects do not appear to vary with age in this population. However, the group of patients over 75 was relatively small and data should be interpreted with caution. Careful titration based on the individual response seems appropriate irrespective of age.

Effects of aging on current vocalization threshold in mice measured by a novel nociception assay

BACKGROUND

Age-related changes in nociception have been extensively studied in the past decades. However, it remains unclear whether in addition to the increased incidence of chronic illness, age-related changes in nociception contribute to increased prevalence of pain in the elderly. Although a great deal of evidence suggests that nociception thresholds increase with aging, other studies yield disparate results. The aim of this investigation was to longitudinally determine the effect of aging on nociception.

METHODS

The authors developed a nociception assay for mice using electrical stimuli at 2,000, 250, and 5 Hz that reportedly stimulate Abeta, Adelta, and C sensory nerve fibers, respectively. A system was designed to automate a method that elicits and detects pain-avoiding behavior in mice. Using a Latin square design, the authors measured current vocalization thresholds serially over the course of mice's life span.

RESULTS

For 2,000-Hz (Abeta), 250-Hz (Adelta), and 5-Hz (C) electrical stimuli, current vocalization thresholds first decreases and then increases with aging following a U-shaped pattern (P < 0.001). In addition, average current vocalization thresholds at youth and senescence are significantly higher than those at middle age for the 250-Hz (Adelta) and 5-Hz (C fiber) electrical stimulus (P < 0.05).

CONCLUSIONS

Using a novel and noninjurious nociception assay, the authors showed that over the life span of mice, current vocalization threshold to electrical stimuli changes in a U-shaped pattern. The findings support the notion that age-related changes in nociception are curvilinear, and to properly study and treat pain, the age of subjects should be considered.

Nociceptive threshold and analgesic response to morphine in aged and young adult rats as determined by thermal radiation and intracerebral electrical stimulation

The present experiment compared the nociceptive threshold and analgesic response to morphine in young (4-5 months) and aged (24 months) rats using peripheral thermal stimulation and intracerebral electrical stimulation. Responses to thermal stimuli were assessed using both the classical tail-flick procedure in which latency of response is the dependent variable and a new method in which threshold in calories of heat is the dependent variable. In the intracerebral nociceptive threshold procedure, electrical stimuli were delivered via an electrode implanted in the mesencephalic reticular formation (MRF), a pain pathway, and the animals were trained to terminate the stimulation by turning a cylindrical manipulandum embedded in one wall of the experimental chamber. For the classical tail-flick method, the aged rats required a greater intensity of stimulation to produce a basal response latency that was between 2.5 and 3.5 s. Using the new psychophysical method for determining the tail-flick threshold, the aged rats' basal thresholds were significantly higher than that of the young rats. However, the basal thresholds obtained by direct stimulation of the MRF failed to show a significant age effect, suggesting that the registration of pain is not different between young and aged rats. These age-related differences in baseline tail-flick response may be due to changes in the spinal reflex associated with aging. Although, there was no difference in the analgesic effects of morphine between young and aged rats using the latency of the tail-flick response, evidence for decreased analgesic response was seen using the tail-flick threshold measure and the intracerebral stimulation threshold method.

Reliability and validity of the Faces Pain Scale with older adults

BACKGROUND

The Faces Pain Scale (FPS) is effective with older adults in clinical assessment of pain intensity. The 0-10 numerical rating scale (NRS) has universally adapted for assessment of pain intensity. The commonly used versions of the FPS have six, seven or nine faces.

OBJECTIVES

We proposed an 11 face modified version of the McGrath nine face FPS to compare with the 0-10 NRS without the mathematical translation. The psychometric properties of the proposed version were also investigated in a sample of Korean older adults.

DESIGN

This study employed methodological research design.

SETTINGS AND PARTICIPANTS

A sample of 31 older adults was recruited through local senior citizen centers to examine the construct validity and the test-retest reliability. For the concurrent validity testing, a sample of 85 older adults with chronic pain was recruited through a general hospital and an oriental medical hospital.

METHODS

The construct validity was examined by determining if the subjects perceive the FPS as representing pain and they agree on the rank of each face. The test-retest reliability was examined at a 2-week interval. The concurrent validity was examined by using the NRS and the Visual Analogue Scale (VAS).

RESULTS

Subjects perceived the 11 FPS as a pain measure, and the subjects' agreements in the rank ordering of the faces were almost perfect (Kendall's W = .93, p < .001). Cohen's kappa of .61 (p < .001) for test-retest reliability was acceptable in the cognitively intact subjects. Concurrent validity measured by the correlation between the FPS and the NRS (r = .73, p < .001) and the VAS (r = .73, p < .001) was supported.

CONCLUSIONS

These results supported the appropriateness of the 11 FPS for use with the older adults in clinical practice to measure pain intensity. Additionally, this study provided cross-cultural evidence to evaluate usefulness of the FPS.

Effect of treatment success and empathy on surgeon attributions for back surgery outcomes

This study examined the effect of conservative and surgical treatment success/failure on attributions by surgeons for low back surgical outcomes. It also examined empathy as a moderator of these attributions. Forty surgeons attributed surgical outcome in a hypothetical patient to physical and psychological factors. Results indicated that surgeons were less likely to attribute the cause of surgical failure to physical factors when the patient had already failed conservative treatment for low back pain. Surgeons also were more likely to attribute failed surgery, relative to successful surgery, to patient psychological factors. An interaction effect indicated that the latter difference was significant only when the patient had previously succeeded at conservative treatment. Empathy moderated this effect: empathic surgeons were less likely to see the failed surgery patient as psychologically culpable. This self-serving attributional style, as moderated by empathy, is discussed regarding its potential impact on patient care and physician judgment processes.

Concept analysis of coping with arthritic pain by South Korean older adults: Development of a hybrid model

This study was conducted to clarify and conceptualize the phenomenon of coping with arthritic pain by older adults. The Hybrid Model of concept development was applied to develop a conceptual structure of coping with arthritic pain by older adults. A refined definition of coping with arthritic pain by older adults emerged that identified the attributes and structure of the concept. This study reveals the characteristics of the ways that older adults cope with arthritic pain, such as how they experience themselves, how pain affects their daily life, and how they perceive the meaning of coping with arthritic pain. These characteristics indicate the complexity of the concept regarding the coping of older adults with arthritic pain. This area needs to be clarified when nursing staff assess coping with pain and plan pain management for older adults.

Foot pain in community-dwelling older people: an evaluation of the Manchester Foot Pain and Disability Index

OBJECTIVES

The objectives of this study were (i) to examine the psychometric properties of the Manchester Foot Pain and Disability Index (MFPDI) in community-dwelling older people, and (ii) to determine the correlates of disabling foot pain in this age-group.

METHODS

A questionnaire consisting of medical history, the MFPDI, the Goldberg Anxiety and Depression Scale (GADS) and the Medical Outcomes Study Short Form 36 (SF-36) was administered to a sample of 301 community-dwelling people (117 men, 184 women) aged between 70 and 95 yr (mean 77.2, s.d. 4.9), who also underwent a clinical assessment of foot problems.

RESULTS

Using the MFPDI case definition, 108 people (36%) were found to have disabling foot pain. Within this subgroup, the MFPDI had high internal consistency (Cronbach's alpha=0.89). Principal components analysis revealed a four-factor structure representing the constructs of functional limitation, pain intensity, concern about appearance, and activity restriction, which explained 62% of the variance in the original items. Participants with disabling foot pain were more likely to report pain in the back, hips, knees and hands or wrists, and exhibited flatter feet and less range of motion in the ankle joint. The MFPDI and its subscales were significantly associated with scores on the GADS depression subscale and the general health and mental health components of the SF-36.

CONCLUSIONS

These findings confirm the high prevalence of disabling foot pain in older people, and suggest that the MFPDI is a suitable tool for assessing foot pain in this population.

Pain in elderly people with severe dementia: a systematic review of behavioural pain assessment tools

Background

Pain is a common and major problem among nursing home residents. The prevalence of pain in elderly nursing home people is 40–80%, showing that they are at great risk of experiencing pain. Since assessment of pain is an important step towards the treatment of pain, there is a need for manageable, valid and reliable tools to assess pain in elderly people with dementia.

Methods

This systematic review identifies pain assessment scales for elderly people with severe dementia and evaluates the psychometric properties and clinical utility of these instruments. Relevant publications in English, German, French or Dutch, from 1988 to 2005, were identified by means of an extensive search strategy in Medline, Psychinfo and CINAHL, supplemented by screening citations and references. Quality judgement criteria were formulated and used to evaluate the psychometric aspects of the scales.

Results

Twenty-nine publications reporting on behavioural pain assessment instruments were selected for this review. Twelve observational pain assessment scales (DOLOPLUS2; ECPA; ECS; Observational Pain Behavior Tool; CNPI; PACSLAC; PAINAD; PADE; RaPID; Abbey Pain Scale; NOPPAIN; Pain assessment scale for use with cognitively impaired adults) were identified. Findings indicate that most observational scales are under development and show moderate psychometric qualities.

Conclusion

Based on the psychometric qualities and criteria regarding sensitivity and clinical utility, we conclude that PACSLAC and DOLOPLUS2 are the most appropriate scales currently available. Further research should focus on improving these scales by further testing their validity, reliability and clinical utility.

Reliability and validity of the Italian version of the Chronic Pain Grade questionnaire in patients with musculoskeletal disorders

The aim of this study is to analyse the psychometric properties of the Italian version of the Chronic Pain Grade (CPG) questionnaire within a population of chronic musculoskeletal pain patients. The CPG questionnaire was adapted following the translation and back-translation methodologies. There were 576 patients with chronic musculoskeletal pain. Internal consistency was checked by the Cronbach's alpha coefficient. Construct validity was analysed by performing principal component factor analysis and by comparing CPG dimensions and subscales with the SF-36 questionnaire. Discriminant validity was assessed by comparing the CPG and SF-36 dimensions in patients with and without other health conditions. Factor analysis yielded two factors which accounted for 76.4% of the variance of the questionnaire. Both subscales of the CPG showed satisfying to good internal consistency. Cronbach's alpha was 0.89 for the first factor 'Disability Score' (58.72% of the explained variance) and 0.81 for the second factor 'Characteristic Pain Intensity' (17.70% of the explained variance). Item-total correlations for the subscales were moderate up to high (from 0.500 to 0.771). In comparison with the SF-36, the expected correlations were found when comparing items measuring similar constructs, supporting the concepts of convergent construct validity. Discriminant validity, assessed by comparing the CPG dimensions in patients with and without other health conditions, showed that the CPG shows moderate association with the presence of co-morbidities. Furthermore, the CPG Disability Score was inversely correlated (p=0.01) to years of formal education. In conclusion, the Italian version of the CPG questionnaire has shown to be valid and reliable for evaluating the severity of chronic musculoskeletal pain, with metric properties in agreement with the original, widely used version.

The Relationship Between Pain, Neuropsychological Performance, and Physical Function in Community-Dwelling Older Adults with Chronic Low Back Pain

OBJECTIVE

Chronic pain and cognitive impairment are prevalent and disabling in older adults (OA), but their interrelationship has not been rigorously tested. We did so in OA with chronic low back pain (CLBP).

DESIGN

A total of 323 OA (160 pain-free, 163 CLBP; mean age 73.5 years, 45% female) had neuropsychological (NP) testing with the Repeatable Battery for the Assessment of Neuropsychological Status, Trail Making Test, and the Grooved Pegboard Test. Pain intensity was measured with the McGill Pain Questionnaire Short Form. Physical performance (gait speed, functional reach, chair rise, trunk rotation, and static/dynamic lifting), psychosocial disruption (Geriatric Depression Scale, the Short Form-36 Mental Health and Role Limitations-Emotional Composite scale), and self-reported disability (Functional Status Index, the Short From-36 Physical Functioning/Role-Physical Composite scale) were also measured.

SETTING

Outpatient research laboratory.

RESULTS

There were no group differences in age, gender, or educational level, but significant differences in NP scores (P = 0.01) were found. Five scales accounted for the differences: immediate memory (P = 0.002), language (P = 0.004), delayed memory (P = 0.04), mental flexibility (Trails B [P = 0.02]), and Grooved Pegboard (P = 0.05). NP scores were significantly correlated with physical performance (R2= 0.30, P < 0.001), but not self-reported disability (R2= 0.04, P = 0.52) or psychosocial disruption (R2= 0.05, P = 0.46). NP function was correlated with pain intensity (R2= 0.17, P < 0.001), and NP function mediated the relationship between pain and physical performance.

CONCLUSIONS

OA with CLBP demonstrated impaired NP performance as compared with pain-free OA. Further, pain severity was inversely correlated with NP performance, and NP performance mediated the relationship between pain and physical performance. Future research should examine whether cognitive function and impaired physical performance can be improved with pain reduction.

A descriptive study of older adults with persistent pain: use and perceived effectiveness of pain management strategies [ISRCTN11899548]

BACKGROUND

Persistent pain is a common, often debilitating, problem in older adults; however, few studies have focused on the experiences of older adults in managing their pain. The objective of this study was to describe the use and perceived effectiveness of pain management strategies in a sample of older adults and to explore the associations of these variables with demographic and psychosocial characteristics.

METHODS

Adults >or= 65 years old and living in retirement facilities who reported persistent pain (N = 235, mean age = 82 years, 84% female, 94% white) completed measures of demographics, pain, depression, self-efficacy for managing pain, and a Pain Management Strategies Survey. Participants identified current and previous-year use of 42 pain management strategies and rated helpfulness of each on a 5-point scale.

RESULTS

Acetaminophen, regular exercise, prayer, and heat and cold were the most frequently used pain management strategies (61%, 58%, 53%, and 48%, respectively). Strategies used by >25% of the sample that were rated moderately or more helpful (i.e., >2 on a 0 to 4 scale) were prayer [mean (SD) = 2.9 (0.9)], opioids [2.6 (0.8)], regular exercise [2.5 (1.0)], heat/cold [2.5 (1.0)], nonsteroidal anti-inflammatory drugs [2.4 (1.0)], and acetaminophen [2.3 (1.0)]. Young-old (65-74 years) study participants reported use of more strategies than did old-old (85+ years) participants (p = .03). Perceived helpfulness of strategy use was significantly associated with pain intensity (r = -.14, p < .0001), self-efficacy (r = .28, p < .0001), and depression (r = -.20, p = .003).

CONCLUSION

On average, older adults view the strategies they use for persistent pain as only moderately helpful. The associations between perceived helpfulness and self-efficacy and depression suggest avenues of pain management that are focused less on specific treatments and more on how persons with persistent pain think about their pain.

Efficacy of Qi-therapy (external Qigong) for elderly people with chronic pain

To test the efficacy of Qi-therapy (external Qigong) in improving symptoms of pain and mood states in elderly peoples with chronic pain. Forty-three elderly people with chronic pain were randomly assigned either to an intervention or a general care group. The intervention group was given four weeks of Qi-therapy whereas the control group was given standard care. Compared with the control group, Qi-therapy participants experienced improvements in positive mood and psychological variables over the four-week program. Compared with baseline values, pain and psychological benefits remained significantly improved after two weeks of follow-up. These findings suggest that Qi-therapy may help the elderly cope with pain and associated mood disturbances.

Reciprocal relationship between pain and depression in elderly Chinese primary care patients

BACKGROUND

Pain and depression are common in old age but the reciprocal relationship between pain and depression has not been established in a single study. Moreover, few studies have addressed this issue in a primary care setting. The purposes of this study were to examine the reciprocal relationship between pain and depression and to identify whether social support, functional disability or social functioning mediated the link between pain and depression among Hong Kong Chinese elderly primary care patients.

METHOD

Subjects were 318 patients assessed by a trained assessor with MDS-HC at baseline and these subjects were randomly selected from attendants of three randomly selected elderly health centers in Hong Kong. These patients were re-assessed one year after baseline evaluation.

RESULTS

Multiple regression analyses revealed that pain at baseline significantly predicted depression at 12-month follow-up assessment when age, gender, martial status, education, and depression at baseline were adjusted for, but depression at baseline was not associated with pain at 12-months after baseline measure while controlling for age, gender, martial status, education, and pain at baseline. However, depression did predict the onset of pain. Moreover, social support, physical disability or social functioning did not mediate the impact of pain on depression.

CONCLUSIONS

These data suggest that pain is an important predictor of depression in elderly primary care patients. Therefore, aged care service practitioners must take this risk factor into consideration in their preventive intervention and treatment for psychological well-being.

Individual differences in pain responses

The experience of pain is characterized by tremendous inter-individual variability. Indeed, an identical noxious stimulus can produce vastly different pain responses across individuals. Historically, scientists have regarded this variability as a nuisance; however, substantial data suggest that these individual differences may provide valuable information that can be used to enhance clinical management of pain. This paper discusses several factors that contribute to individual differences in pain perception, including demographic (ie, sex, age, and ethnicity), genetic, and psychosocial variables. These factors are discussed in the context of the biopsychosocial model of pain, which posits that pain perception is influenced by interactions among biologic, psychosocial, and sociocultural factors. Finally, the clinical and scientific implications of individual differences in pain are discussed.

Aging, peripheral nerve injury and nociception: effects of the antioxidant 16-desmethyltirilazad

Peripheral neuropathies increase with aging, and reactive oxygen species contribute to the symptomatology of neuropathic pain disorders. In this study, we examined age-related differences in the therapeutic efficacy of pre- or post-treatments of the amino-steroidal antioxidant 16-desmethyltirilazad in delaying the onset and/or limiting the duration of tactile-evoked allodynia following the induction of peripheral mononeuropathies in rats. Two different models of nerve injury were utilized to induce allodynia in young and aged rats: (1) the chronic constriction injury (CCI) model of Bennett and Xie [Bennett GJ, Xie Y-K. A peripheral mononeuropathy in rat that produces disorders of pain sensation like those seen in man. Pain 1988;33:87-107]; (2) the partial sciatic nerve ligation (PSNL) model of Seltzer et al. [Seltzer Z, Dubner R, Shir YA. Novel behavioral model of neuropathic pain disorders produced in rats by partial sciatic nerve injury. Pain 1990;43:205-18]. Calibrated von Frey filaments were used to examine changes in paw withdrawal threshold values. The results demonstrated that pre-treating young and aged rats with 16-desmethyltirilazad prior to the induction of peripheral mononeuropathies prevented the onset of neuropathic pain. However, once post-operative tactile allodynia was established, post-treatment therapy was ineffective at reversing the symptoms. These findings support the mediatory role of reactive oxygen species in neuropathic pain disorders, and suggest that the antiallodynic efficacy of antioxidant intervention is dependent on the time course of administration.

The role of everyday emotion regulation on pain in hospitalized elderly: insights from a prospective within-day assessment

Pain management is still an unresolved issue among the general elderly patient population in institutions. It is proposed that everyday emotion regulation (i.e. self-supporting maintenance or change in positive and negative emotions) performed by hospitalized elderly can help reduce pain intensity. This argument is based on (1) robust evidence in life span research of elderly's high ability for emotion regulation in the midst of everyday life and (2) experimental evidence from pain research that simple strategies to regulate emotions impact pain intensity. A prospective within-day study was designed to (1) empirically trace the occurrence of emotion regulation over specific sampling episodes, (2) assess the impact of this regulation on end-of-episode pain intensity, and (3) consider the effects of socio-demographic, psychological, and clinical factors on emotion regulation and its relationship to pain intensity. Thirty patients (mean age 78.8) of a geriatric facility provided ratings of emotional states and pain intensity. Emotion regulation was defined as maintenance/recovery of desirable emotional states and computed for individual emotions (positive feelings, anger, anxiety, and mild depressed feelings) and globally to reflect the number of emotions successfully regulated. Multilevel analyses found emotion regulation to be prospectively related to pain intensity, for both global and anxiety regulation. While this relationship held across the sample, lower emotion regulation was found for old-old (vs. young-old), males (vs. females), and patients living alone (vs. with others). Results suggest the possibility that promoting emotion regulation as self-management strategy could contribute to cost-effective pain management in general or targeted elderly populations.

Depressive symptoms, pain experiences, and pain management strategies among residents of taiwanese public elder care homes

The purpose of this study was to explore depressive symptoms, pain experiences, and pain self-care management strategies among residents of public elder care homes in Taiwan. Random sampling was used to recruit participants (n=200). In this sample, the prevalence of depressive symptoms was 49.0%. Pain prevalence was significantly higher in the depressed group (59.2%) than in the non-depressed group (43.1%). Depressed participants tended to report more severe pain intensity, worst pain, average pain, and more interference with walking than the non-depressed group. Most participants (60.0%) took prescribed medications for dealing with pain. Self was the main information source for pain management strategies. Participants reported severe bouts of pain but used limited self-care pain management strategies. Due to the limited number of health care providers in elder care homes, the authors recommend increasing knowledge about depression, pain, and pain management strategies of both institutional health care staff and residents.

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 relief strategies used by older people with chronic pain: an exploratory survey for planning patient-centred intervention

AIM

To explore pain relief interventions used by older people with chronic pain in Hong Kong. The frequency and perceived effectiveness of non-prescription measures were also explored.

BACKGROUND

With increasing life expectancy, the incidence of chronic illness and chronic pain also increases. Chronic pain robs older people of their quality of life.

DESIGN

This was a descriptive qualitative study.

RESULTS

Forty-four older people (37 female and seven male) who were residents of a nursing home in Hong Kong took part in this study. Their ages ranged from 65 to 82 years, median age was 75 years. Almost 80% had experienced moderate to severe pain during the previous three months. The most common sites of pain were muscles and joints; 35% of subjects reported continuous pain, 27% reported pain associated with activities of daily living, and 38% reported pain during exercise but not at rest. Only a few of the study group had taken prescribed medication to relieve pain, and only two of the 44 subjects studied had used a combination of drug and non-prescription intervention for pain relief. The majority of participants used non-prescription intervention only and the most commonly used were topical analgesics with massage. The majority (58%) of the subjects perceived the used of non-prescription intervention to be very effective in pain relief.

CONCLUSIONS

The prevalence of pain was found to be high among older people in this study. Yet, they were taking a pro-active and responsible role in treating their chronic pain by using non-pharmacological patient-initiated intervention; also older people perceive themselves to have control over their pain status.

RELEVANCE TO CLINICAL PRACTICE

This active role of older people in their pain relief is likely to enhance the effect of education seminars and workshops aimed at novel, non-pharmacological pain relief strategies for older people with chronic pain.

Pain prevalence, experiences and management strategies among the elderly in taiwanese nursing homes

The purpose of this study was to explore pain prevalence, experiences, and self-care management strategies among elderly residents of nursing homes in Taiwan. Stratified random sampling was used to recruit participants (n=150). In these elderly nursing home residents, pain prevalence was 65.3% and the average number of pain sites was 3.24 (SD=2.59). The mean pain intensity was 3.86 (SD=1.90) and pain interference was 4.30 (SD=2.28). "Aching" was the word most commonly used (77.6%) to describe pain. Most participants (54.21%) took prescribed medications for dealing with pain; doctors were the main information source for this self-care strategy. Although participants reported severe bouts of pain, they used limited self-care pain management strategies. Since health care providers play an important role in helping the elderly to manage pain, the authors recommend training nursing home staff to perform regular pain assessments and providing current knowledge about pain assessment and management strategies.

The role of opioid analgesics in rheumatoid disease in the elderly population

Adequate pain therapy is an important aspect in the treatment of the elderly patient with rheumatoid disease. Problems with traditional NSAIDs include potentially serious gastrointestinal, cardiovascular and renal adverse effects, especially in the elderly. In addition, the selective cyclo-oxygenase-2 inhibitors have been associated with renal and cardiovascular adverse effects which may limit their use in the elderly with renal or cardiovascular disease. Opioids provide a treatment option for the management of pain in elderly patients with rheumatoid disease in whom pain control under standard management is poor; however, various therapeutic difficulties are encountered in the heterogeneous elderly population (increased risk of adverse effects, multimorbidity, and polypharmacy). Lower initial opioid dosage, prolonged dosage intervals and slower dosage titrations are advisable because of altered pharmacokinetics and pharmacodynamics. Kidney function should be tightly monitored and a timely use of laxatives is to be encouraged. Randomised clinical studies of opioids in musculoskeletal pain (e.g. osteoarthritis) have increasingly extended the scientific basis for their use. However, no randomised controlled clinical trials have examined the efficacy and the benefit/risk ratio of opioids in rheumatoid arthritis. Opioids also demonstrate an analgesic effect following local peripheral application. This opens the way to new therapeutic options in the future through the development of systemic peripherally selective opioids without CNS adverse effects.

Quality of life and pain in Parkinson's disease: a controlled cross-sectional study

PURPOSE

To compare health-related quality of life (HRQL) and pain symptoms in patients with PD with a matched control group. To our knowledge, controlled studies of Parkinson's disease (PD) patients within this area are rare.

SCOPE

Fifty-seven patients and 95 controls took part in a self-administered questionnaire study. The instruments were the SF-36, visual analogue scales, pain drawing and pain-specific questions.

CONCLUSIONS

Pain problems are common in PD patients but also to a large extent in the normal population. HRQL was reduced (p < or = 0.001) for the PD patients on all the scales on the SF-36 and consequently also in the pain dimension. The study indicates that even PD patients, who are optimally diagnosed and treated by a neurologist, might require additional rehabilitation treatment to improve their HRQL and pain problems.

Toward a middle-range theory of adaptation to chronic pain

Merton postulated that to significantly advance disciplinary knowledge, scholarship must include the development of middle-range theories that derive hypotheses, can be empirically investigated, and are linked to extant theories. The purpose of this paper is to present the strategies used to develop a middle-range nursing theory of adaptation to chronic pain based on Merton's description. Analysis and synthesis of the theoretical and research literature provided the foundational, theory-building strategies used to develop the adaptation to chronic pain model. Theoretical substruction was then used to deduce the adaptation to chronic pain model from Roy's adaptation model.

Individual differences in diffuse noxious inhibitory controls (DNIC): association with clinical variables

Laboratory pain research has been criticized as being irrelevant to the clinical experience of pain. Previous findings have been inconsistent with some studies suggesting that experimental pain responses may be related to the reported presence or severity of chronic pain, while others report no such associations. However, few of these studies assess a variety of laboratory pain responses, and none has assessed relationships between clinical pain and diffuse noxious inhibitory controls (DNIC) in healthy subjects. We administered questionnaire measures of pain, quality of life, and psychological variables to a sample of healthy adults participating in a laboratory study of age differences in pain responses. DNIC was not related to other laboratory pain responses, psychological variables, or physiological variables measured in the present study. Regression models predicting health-related quality of life (e.g. pain, physical functioning) revealed that age, sex, and DNIC responses explained between 10 and 25% of the variance in these dependent measures. Of the laboratory pain variables, only DNIC was the sole consistent predictor of clinical pain and physical health, with greater DNIC responses related to less pain, better physical functioning, and better self-rated health. In addition, age differences in DNIC appeared to partially mediate age differences in physical functioning. These findings highlight the potential clinical relevance of experimental pain procedures and suggest that DNIC may be the laboratory pain response most closely associated with clinical pain and health-related variables.

Understanding chronic pain and the mind-body connection

This article investigates the mind-body connection in chronic pain. A discussion of pain physiology is designed to identify the role of the neurological system in chronic pain perception. The gate control theory and the neurotransmitter theory of pain are explored. A description of mind-body and pain management methods, and an illustrative case study are provided. The information presented concerning mind-body connection in chronic pain perception will enable practicing nurses to be more fully aware of the chronic pain phenomenon, and lead to better chronic pain assessment, management, and evaluation.

Physical modalities in chronic pain management

The following conclusions can be made based on review of the evidence: There is limited but positive evidence that select physical modalities are effective in managing chronic pain associated with specific conditions experienced by adults and older individuals. Overall, studies have provided the most support for the modality of therapeutic exercise. Different physical modalities have similar magnitudes of effects on chronic pain. Therefore, selection of the most appropriate physical modality may depend on the desired functional outcome for the patient, the underlying impairment, and the patient's preference or prior experience with the modality. Certain patient characteristics may decrease the effectiveness of physical modalities, as has been seen with TENS. These characteristics include depression, high trait anxiety, a powerful others locus of control, obesity, narcotic use, and neuroticism. The effect on pain by various modalities is generally strongest in the short-term period immediately after the intervention series, but effects can last as long as 1 year after treatment (e.g., with massage). Most research has tested the effect of physical modalities on chronic low back pain and knee OA. The effectiveness of physical modalities for other chronic pain conditions needs to be evaluated more completely. Older and younger adults often experience similar effects on their perception of pain from treatment with physical modalities. Therefore, use of these modalities for chronic pain in older adults is appropriate, but special precautions need to be taken. Practitioners applying physical modalities need formal training that includes the risks and precautions for these modalities. If practitioners lack formal training in the use of physical modalities, or if modality use is not within their scope of practice, it is important to consult with and refer patients to members of the team who have this specialized training. Use of a multidisciplinary approach to chronic pain management is of value for all adults and older individuals in particular [79-81]. Historically, physical therapists have been trained to evaluate and treat patients with the range of physical modalities discussed in this article. Although members of the nursing staff traditionally have used some of these modalities (e.g. some forms of heat or cold and massage), increasing numbers of nurses now are being trained to apply more specialized procedures (e.g., TENS). Healthcare professionals must be knowledgeable about the strength of evidence underlying the use of physical modalities for the management of chronic pain. Based on the limited research evidence available (especially related to assistive devices, orthotics, and thermal modalities), it often is difficult to accept or exclude select modalities as having a potential role in chronic pain management for adults and older individuals. Improved research methodologies are needed to address physical modality effectiveness better.