Assessment tools for the evaluation of pain in the oncology patient

The control of cancer pain is an essential goal in the care of patients with cancer. Inadequate pain assessment by health care providers is a major risk factor for undertreatment of pain. Repeated and accurate pain assessment is required for optimal pain management. Pain assessment tools such as simple rating scales and short pain questionnaires can facilitate routine measurement of cancer-related pain in clinical and research settings. In addition to measuring pain intensity, it is important to determine the impact of pain on patients’ function, mood, and quality of life. Developmental issues must be considered when assessing the pain of children and elderly individuals with cancer. Novel technologies may be used to improve accurate and timely pain measurement.     

Pain assessment in the cognitively impaired and unimpaired elderly.

The purpose of this study was to determine the self-report pain rating scale(s) that can be used to quantify pain in elderly persons across cognitive functioning levels. Randomly selected elderly subjects (N = 100) completed the Short Portable Mental Status Questionnaire to categorize their level of cognitive impairment: intact (n = 36), mild (n = 9), moderate (n = 15), and severe (n = 40). Pain was measured with the Memorial Pain Assessment Card verbal subscale, FACES, COOP pain subscale, a numeric rating scale, and the Present Pain Intensity subscale of the McGill Pain Questionnaire. Receiver operator characteristic curves indicated that participants categorized with moderate to no cognitive impairment were able to complete 1 or more of the pain assessment tools. Of the severely impaired, 30% were able to complete 1 or more pain assessment tools. Intraclass correlations showed a high degree of consistency among all pairs of tools (intraclass correlation > 0.74). We conclude that most elderly, with normal to moderately impaired cognitive functioning, as well as some severely impaired elderly, are capable of using self-report tools to rate their pain.     

Difficult problems and their solutions in patients with cancer pain of the head and neck areas

Pain management can be especially difficult in patients with head and neck cancer due to the erosive nature of the neoplasms that invade the region, the rich innervation of the head and neck, and other factors. Consequently, diagnosis is a complex process that cannot be dealt with in a cursory fashion. Furthermore, tumor pain can mimic noncancer conditions, nonmalignant orofacial disorders can be suggestive of tumor growth, and antineoplastic treatment-related conditions can be difficult to distinguish from tumor recurrence. A series of case reports illustrates key elements of diagnosis and pain management in patients with head and neck cancer. These elements include 1) detailed assessment of pain intensity and characteristics; 2) appropriate use of analgesic adjuvant medications; 3) use of diagnostic and therapeutic nerve blocks and myofascial trigger point injections; and 4) a high index of suspicion regarding tumor recurrence pain.     

Pain in cognitively impaired nursing home patients

Pain is an understudied problem in frail elderly patients, especially those with cognitive impairment, delirium, or dementia. The focus of this study was to describe the pain experienced by patients in skilled nursing homes, which have a high prevalence of cognitive impairment. A random sample of 325 subjects was selected from ten community skilled nursing homes. Subjects underwent a cross-sectional interview and chart review for the prevalence of pain complaints, etiology, and pain management strategies. Pain was assessed using the McGill Pain Questionnaire and four unidimensional scales previously utilized in younger adults. Thirty-three percent (33%) of subjects were excluded because they were either comatose (21%), non-English speaking (3.7%), temporarily away (sick in hospital) (4.3%), or refused to participate (3.7%). Of 217 subjects in the final analysis, the mean age was 84.9 years, 85% were women, and most were dependent in all activities of daily living. Subjects demonstrated substantial cognitive impairment (mean Folstein Mini-Mental State exam score was 12.1 ± 7.9), typically having deficits in memory, orientation, and visual spatial skills. Sixty-two percent reported pain complaints, mostly related to musculoskeletal and neuropathic causes. Pain was not consistently documented in records, and pain management strategies appeared to be limited in scope and only partially successful in controlling pain. None of the four unidimensional pain-intensity scales studied in this investigation had a higher completion rate than the Present Pain Intensity Scale of the McGill Pain Questionnaire (65% completion rate). However, 83% of subjects who had pain could complete at least one of the scales. We conclude that cognitive impairment among elderly nursing home residents presents a substantial barrier to pain assessment and management. Nonetheless, most patients with mild to moderate cognitive impairment can be assessed using at least one of the available bedside assessment scales.     

I. Indices of Pain Intensity Derived From Ecological Momentary Assessments: Rationale and Stakeholder Preferences

Pain assessment that fully represents patients’ pain experiences is essential for chronic pain research and management. The traditional primary outcome measure has been a patient's average pain intensity over a time period. In this series of 3 articles, we examine whether pain assessment can be enhanced by considering additional outcome measures capturing temporal aspects of pain, such as pain maxima, duration, and variability. Ecological momentary assessment makes the assessment of such indices readily available. In this first article, we discuss the rationale for considering additional pain indices derived from ecological momentary assessment and examine which are most important to stakeholders. Patients (n = 32), clinicians (n = 20), and clinical trialists (n = 20) were interviewed about their preference rankings for Average, Worst, and Least Pain, Time in High Pain, Time in No/Low Pain, Pain Variability, and Pain Unpredictability. Each stakeholder group displayed a distinct preference hierarchy for different indices, and there were few commonalities between groups. Patients favored Worst Pain and Time in High Pain, followed by Pain Variability and Unpredictability. Trialists favored Average Pain, whereas clinicians favored Worst Pain. Results suggest that multiple temporal aspects of pain are relevant for stakeholders and should be considered when evaluating the efficacy of pain management.PerspectiveExamining which aspects of pain are most important to measure from the perspective of different stakeholders can facilitate efforts to include all relevant treatment outcomes. Our study suggests that multiple temporal aspects of pain intensity are important to stakeholders. This should be considered when evaluating the efficacy of pain management.     

Pain perception and tolerance in patients with frontotemporal dementia

Pain management in elderly people with cognitive impairment poses special challenges, due to difficulties in pain assessment and specific neurodegenerative changes along pain pathways. Most studies have concentrated on Alzheimer’s disease (AD) patients, in whom some contrasting findings have been found. For example, while psychophysical data suggest a selective blunting of the affective dimension of pain, pain-related fMRI signal increases have also been described. Few data have been reported in patients with frontotemporal dementia (FTD). By electrical stimulation, we have measured pain threshold and pain tolerance in clinically diagnosed FTD patients with SPECT cerebral hypoperfusion. We performed our analysis on two separate and overlapping subgroups selected on the basis of (1) neuropsychological scores below cut-off values (2) a strictly localized frontal and/or temporal hypoperfusion. We observed increased pain threshold in the first group and increased pain threshold and pain tolerance in the second group. Our results suggest differences in pain processing changes in distinct types of dementia, while at the same time caution that pain perception assessment may depend on the criteria adopted for diagnosis.     

AAPT Diagnostic Criteria for Chronic Sickle Cell Disease Pain

Pain in sickle cell disease (SCD) is associated with increased morbidity, mortality, and high health care costs. Although episodic acute pain is the hallmark of this disorder, there is an increasing awareness that chronic pain is part of the pain experience of many older adolescents and adults. A common set of criteria for classifying chronic pain associated with SCD would enhance SCD pain research efforts in epidemiology, pain mechanisms, and clinical trials of pain management interventions, and ultimately improve clinical assessment and management. As part of the collaborative effort between the Analgesic, Anesthetic, and Addiction Clinical Trial Translations Innovations Opportunities and Networks public-private partnership with the U.S. Food and Drug Administration and the American Pain Society, the Analgesic, Anesthetic, and Addiction Clinical Trial Translations Innovations Opportunities and Networks-American Pain Society Pain Taxonomy initiative developed the outline of an optimal diagnostic system for chronic pain conditions. Subsequently, a working group of experts in SCD pain was convened to generate core diagnostic criteria for chronic pain associated with SCD. The working group synthesized available literature to provide evidence for the dimensions of this disease-specific pain taxonomy. A single pain condition labeled chronic SCD pain was derived with 3 modifiers reflecting different clinical features. Future systematic research is needed to evaluate the feasibility, validity, and reliability of these criteria.

Assessment of chronic neuropathic pain and the use of pain tools

Chronic neuropathic pain is experienced by a large number of patients. It can affect the individual physically, psychologically and socially. This review examines the evidence base for the assessment of chronic neuropathic pain and discusses some of the main tools and their suitability for use for this particular type of pain. The central role the nurse has in pain assessment and management to improve the patient's quality of life is explored. The evidence recommends that chronic pain be assessed using a multidimensional assessment tool. Currently the only tool specifically designed to measure neuropathic pain is the Neuropathy Pain Scale. The author describes how the evidence was applied to make changes in her own area of practice and why the Brief Pain Inventory was considered more suitable than the Neuropathy Pain Scale.     

Complex pain consultations in the pediatric intensive care unit

The assessment and management of pain in children is not always easy and it is clearly more difficult in the critical care setting. Pain management is further complicated in this vulnerable population by the nature of their critical condition, the complexity and multidimensionality of their illness or injuries, and the intensity of emotions in this environment. A variety of pain syndromes are encountered in the pediatric intensive care unit, and the staff there may not be familiar with or comfortable managing these cases. Pain assessment and treatment can be more appropriately managed when guided by the experts of a multidisciplinary pediatric pain service.     

Pain management in elderly persons who require assistance with activities of daily living: a comparison of those living at home with those in special accommodations.

OBJECTIVES: To describe and compare the methods of pain management used by elderly individuals with chronic pain and requiring assistance with activities of daily living, depending on whether they live alone, with someone, at home or in special accommodations. METHODS: This study comprised 294 people aged 76-100 years, identified as having chronic pain and requiring assistance with activities of daily living. Pain and pain management methods were compared using the Multidimensional Pain Inventory, Swedish version, and the Pain Management Inventory. RESULTS: Those living in special accommodations reported more pain than those living at home. Those living with someone reported more pain and interference in daily life than those living alone, despite using more pain-relief methods and having greater social support. The median number of pain-relieving methods used was 3.0 (75th-25th percentile: 5-2). Some (3.8%) did not use any method to relieve their pain. The most frequently used methods were prescribed medicine (20%), rest (20%) and distraction (15%). The methods rated most effective were using cold, exercise, hot bath/shower and consuming alcohol. CONCLUSION: Participants had only a small repertoire of pain management methods and these were mostly conventional in nature. Few non-pharmacological methods were used. The findings suggest the importance of thorough assessment, and the need to fully discuss pain management options with the elderly.     

A pain monitoring program for nurses: effects on nurses' pain knowledge and attitude

One of the reasons for inadequate pain treatment in hospitalized patients is that nurses have insufficient knowledge about pain and pain management. To address this problem, a Pain Monitoring Program (PMP) for nurses was developed, implemented, and evaluated. The PMP consisted of two components: educating nurses about pain, pain assessment, and pain management, and implementing daily pain assessment by means of a numeric rating scale. The effects of the PMP were measured in a one-group pretest–post-test design. The results show that nurses have knowledge deficits and prejudices with regard to pain and pain management. Age and additional pain courses in pain partly predict nurses' pain knowledge. After nurses were educated, the average score on the Pain Knowledge Questionnaire increased from 69.1% (SD = 13.2) at pretest to 75.8% (SD = 11.5) at post-test (P < 0.001). Nurses' attitudes changed with regard to their level of knowledge and skills in relieving pain, willingness to assess pain on a daily basis, and attention to patients' pain complaints. It can be concluded that the PMP is effective in improving nurses' knowledge of pain management and focusing nurses' attention to patients' pain complaints.     

Comparison of pain assessment instruments in cognitively intact and cognitively impaired nursing home residents

This study was conducted to determine which pain severity and location instruments were most useful in the nursing home setting. Pain severity and location were assessed monthly for 1 year in 37 participants enrolled in a restorative rehabilitation program. Pain location was determined by the residents' indications on a diagram, a doll, and their body. Pain severity was determined by resident response to verbal, visual analog, faces, and word scales. Cognitively impaired residents had greater difficulty using all instruments. The McGill Word Scale was used most to determine pain severity. Pointing to themselves most frequently determined pain location among residents. New strategies are needed for pain assessment in the elderly, especially the cognitively impaired elderly, and a combination of instruments to assess pain in the latter group may be necessary.     

Assessing Cancer Pain

Regular assessment for the presence of pain and response to pain management strategies should be high priority in cancer patients. Pain is a multidimensional experience in cancer patients. Pain management will be most effective when treatments are individualized after exploring the various physical and non-physical components of pain, and the patient and family are educated and involved in decision making. This article discusses the various issues that are pertinent to the assessment of pain in cancer patients.     

Pain assessment and management in persons with dementia

Pain is a significant problem for older adults, and it has the potential to negatively impact their independence, functioning, and quality of life. In order for pain to be managed effectively, it first must be assessed carefully and systematically. Pain assessment in patients with dementia should start with self-report of pain, but must incorporate assessment of nonverbal pain behaviors. Pain treatment in older adults should be tailored to the individual. Pain medications can be used safely in elders, and they may be more effective when combined with nonpharmacological treatment. Despite the preponderance of research on pain, relatively few investigations have focused on pain in older adults in general, and on persons with dementia specifically. Better strategies for assessing pain, using observational methods, are the cornerstone of effective pain management in persons with dementia. Practitioners must be knowledgeable about pain treatment, and use both pharmacological and nonpharmacological strategies to relieve pain. Moreover, clinicians must be aware of the barriers to effective pain management and work to overcome them. In so doing, they may make significant contributions to managing pain in patients with dementia, and in improving the quality of life of this vulnerable population of elders.     

Changes in self-perceived role identity modulate pain perception

Pain is an experience including physiological and psychological factors. We assume that emotions may be elicited and increased through self-perceived role identity and that change of role identity alters quality and intensity of pain perception. We used role-play strategies to assess whether pain can be better tolerated whenever, in an unavoidable and unpleasant context, role identity confers pain a meaningful and thus suitable character. We induced antithetic roles in 21 actors who received heat stimuli on their arms before and after role-play conditions. Pain tolerance, skin conductance and voice signals were measured. Pain tolerance increased for heroes/heroines and decreased for faint-hearts. Men showed higher pain tolerance. Heroes/heroines evaluated heat stimuli as more intense. Faint-hearts found pain stimuli more affectively loaded at lower temperatures. Women showed higher pain ratings. Hence, self-perception influences pain perception. Role-play strategies may be of value for new pain management strategies.     

Principles of pain management in older people.

The management of chronic pain should be a priority in geriatric care. Pain is a common problem that has tremendous potential to influence the physical function and quality of life of elderly people during their remaining years. Much research and education is still needed to further our understanding of pain and its management among elderly people. Existing pain management strategies should be tailored for the special needs of the geriatric population. Applications of "high tech" pain management strategies, such as morphine pumps and chronic spinal infusions, need to be clarified for older people. Finally, family and caregiver considerations should be included in chronic pain management strategies.     

The art of pain management

Pain assessment is fundamental to the successful management of pain. Effective communication, in particular the use of empathy, underpins assessment. Concepts within the art of nursing can usefully be applied to the understanding of pain.