Showing papers on "Pain assessment published in 2010"

Anticonvulsant Drugs for Acute and Chronic Pain

Abstract: Background Anticonvulsant drugs have been used in the management of pain since the 1960s. The clinical impression is that they are useful for chronic neuropathic pain, especially when the pain is lancinating or burning. Readers are referred to reviews of carbamazepine and gabapentin in T he Cochrane Library which replace the information on those drugs in this review. Other drugs remain unchanged at present in this review Objectives To evaluate the analgesic effectiveness and adverse effects of anticonvulsant drugs for pain management in clinical practice . Migraine and headache studies are excluded in this revision. Search strategy Randomised trials of anticonvulsants in acute, chronic or cancer pain were identified by MEDLINE (1966-1999), EMBASE (1994-1999), SIGLE (1980 to 1999) and the Cochrane Controlled Trials Register (CENTRAL/CCTR) (The Cochrane Library Issue 3, 1999). In addition, 41 medical journals were hand searched. Additional reports were identified from the reference list of the retrieved papers, and by contacting investigators. Date of most recent search: September 1999. Selection criteria Randomised trials reporting the analgesic effects of anticonvulsant drugs in patients, with subjective pain assessment as either the primary or a secondary outcome. Data collection and analysis Data were extracted by two independent review authors, and trials were quality scored. Numbers-needed-to-treat (NNTs) were calculated from dichotomous data for effectiveness, adverse effects and drug-related study withdrawal, for individual studies and for pooled data. Main results Twenty-three trials of six anticonvulsants were considered eligible (1074 patients). The only placebo-controlled study in acute pain found no analgesic effect of sodium valproate. Three placebo-controlled studies of carbamazepine in trigeminal neuralgia had a combined NNT (95% confidence interval (CI)) for effectiveness of 2.5 (CI 2.0 to 3.4). A single placebo-controlled trial of gabapentin in post-herpetic neuralgia had an NNT of 3.2 (CI 2.4 to 5.0). For diabetic neuropathy NNTs for effectiveness were as follows: (one RCT for each drug) carbamazepine 2.3 (CI 1.6 to 3.8), gabapentin 3.8 (CI 2.4 to 8.7) and phenytoin 2.1 (CI 1.5 to 3.6). Numbers-needed-to-harm (NNHs) were calculated where possible by combining studies for each drug entity irrespective of the condition treated. The results were, for minor harm, carbamazepine 3.7 (CI 2.4 to 7.8), gabapentin 2.5 (CI 2.0 to 3.2), phenytoin 3.2 (CI 2.1 to 6.3). NNHs for major harm were not statistically significant for any drug compared with placebo. Phenytoin had no effect in irritable bowel syndrome, and carbamazepine little effect in post-stroke pain. Clonazepam was effective in one study of temporomandibular joint dysfunction. Authors' conclusions Although anticonvulsants are used widely in chronic pain surprisingly few trials show analgesic effectiveness. Only one study identified considered cancer pain. There is no evidence that anticonvulsants are effective for acute pain. In chronic pain syndromes other than trigeminal neuralgia, anticonvulsants should be withheld until other interventions have been tried. While gabapentin is increasingly being used for neuropathic pain the evidence would suggest that it is not superior to carbamazepine.

Adult Cancer Pain

Abstract: Pain is a common symptom associated with cancer and its treatment. Pain management is an important aspect of oncologic care, and unrelieved pain significantly comprises overall quality of life. These NCCN Guidelines list the principles of management and acknowledge the range of complex decisions faced in the management oncologic pain. In addition to pain assessment techniques, these guidelines provide principles of use, dosing, management of adverse effects, and safe handling procedures of pharmacologic therapies and discuss a multidisciplinary approach for the management of cancer pain.

Race, ethnicity, and pain among the U.S. adult population.

Abstract: Introduction. There is reliable evidence that racial/ethnic minorities suffer disproportionately from unrelieved pain compared with Whites. Several factors may contribute to disparities in pain management. Understanding how these factors influence effective pain management among racial/ethnic minority populations would be helpful for developing tailored interventions designed to eliminate racial/ethnic disparities in pain management. We conducted a review of the literature to explore the interaction between race/ethnicity, cultural influences; pain perception, assessment, and communication; provider and patient characteristics; and health system factors and how they might contribute to racial/ethnic disparities in receipt of effective pain management. Methods. The published literature from 1990–2008 was searched for articles with data on racial/ethnic patterns of pain management as well as racially, ethnically, and culturally-specific attitudes toward pain, pain assessment, and communication; provider prescribing patterns; community access to pain medications; and pain coping strategies among U.S. adults. Results. The literature suggests that racial/ethnic disparities in pain management may operate through limited access to health care and appropriate analgesics; patient access to or utilization of pain specialists; miscommunication and/or misperceptions about the presence and/or severity of pain; patient attitudes, beliefs, and behaviors that influence the acceptance of appropriate analgesics and analgesic doses; and provider attitudes, knowledge and beliefs about patient pain.

The measurement of pain in intensive care unit: Comparison of 5 self-report intensity scales

Abstract: Unlike wards, where chronic and acute pain are regularly managed, comparisons of the most commonly used self-report pain tools have not been reported for the intensive care unit (ICU) setting. The objective of this study was to compare the feasibility, validity and performance of the Visual Analog Scale (horizontal (VAS-H) and vertical (VAS-V) line orientation), the Verbal Descriptor Scale (VDS), the 0–10 oral Numeric Rating Scale (NRS-O) and the 0–10 visually enlarged laminated NRS (NRS-V) for pain assessment in critically ill patients. One hundred and eleven consecutive patients admitted into a medical-surgical ICU were included as soon as they became alert and were able to follow simple commands. Pain was measured using the 5 scales in a randomized order upon enrollment-(T1) and after-(T2) administration of an analgesic or, in absence of pain upon enrollment, after a nociceptive procedure. The rate of any response obtained both at T1 and T2 (success rate) was significantly higher for NRS-V (91%) compared with NRS-O (83%), VDS (78%), VAS-H (68%) and VAS-V (66%). Pain intensity changed significantly between T1 and T2, showing a good validity and responsiveness for the 5 scales, which correlated well between each other. The negative predictive value calculated from true and false negatives defined by real and false absence of pain was highest for NRS-V (90%). In conclusion, the NRS-V should be the tool of choice for the ICU setting, because it is the most feasible and discriminative self-report scale for measuring critically ill patients’ pain intensity.

Reliability and Validity of the Face, Legs, Activity, Cry, Consolability Behavioral Tool in Assessing Acute Pain in Critically Ill Patients

Abstract: BACKGROUND Few investigators have evaluated pain assessment tools in the critical care setting. OBJECTIVE To evaluate the reliability and validity of the Face, Legs, Activity, Cry, Consolability (FLACC) Behavioral Scale in assessing pain in critically ill adults and children unable to self-report pain. METHODS Three nurses simultaneously, but independently, observed and scored pain behaviors twice in 29 critically ill adults and 8 children: before administration of an analgesic or during a painful procedure, and 15 to 30 minutes after the administration or procedure. Two nurses used the FLACC scale, the third used either the Checklist of Nonverbal Pain Indicators (for adults) or the COMFORT scale (for children). RESULTS For 73 observations, FLACC scores correlated highly with the other 2 scores (rho = 0.963 and 0.849, respectively), supporting criterion validity. Significant decreases in FLACC scores after analgesia (or at rest) supported construct validity of the tool (mean, 5.27; SD, 2.3 vs mean, 0.52; SD, 1.1; P < .001). Exact agreement and kappa statistics, as well as intraclass correlation coefficients (0.67-0.95), support excellent interrater reliability of the tool. Internal consistency was excellent; the Cronbach alpha was 0.882 when all items were included. CONCLUSIONS Although similar in content to other behavioral pain scales, the FLACC can be used across populations of patients and settings, and the scores are comparable to those of the commonly used 0-to-10 number rating scale.

Pain management in the elderly population: a review

Abstract: The elderly population comprises the fastest growing segment of the world's population. As patients age, the incidence and prevalence of certain pain syndromes increase. Pain may be underreported as some elderly patients incorrectly believe that pain is a normal process of aging. A comprehensive pain assessment includes a thorough medical history and physical examination, review of systems and pertinent laboratory results, imaging studies, and diagnostic tests. Pain physicians should have a broad range of understanding of the pharmacologic and physiological changes that occur in the geriatric population. The present review on pain management in the elderly focuses on relevant information for the pain clinician. Included are appropriate pain assessment, physical examination, pathophysiologic changes in the elderly, pharmacokinetic and pharmacodynamic changes, and present pain management modalities. Elderly patients present with increased fat mass, decreased muscle mass, and decreased body water, all of which have important ramifications on drug distribution. Hepatic phase I reactions involving oxidation, hydrolysis, and reduction appear to be more altered by age than phase II conjugation such as acetylation, glucuronidation, sulfation, and glycine conjugation. There is a predictable age-related decline in cytochrome P-450 function and, combined with the polypharmacy that much of the elderly population experiences, this may lead to a toxic reaction of medications. One of the newer opiates, oxymorphone, has recently been studied as it is metabolized in a non-cytochrome P-450 pathway and therefore bypasses many of the drug-drug interactions common to the elderly. A multidisciplinary approach is recommended to investigate all possible options for optimal management, including pharmacotherapy, interventional procedures, physical rehabilitation, and psychological support.

Pain in children: assessment and nonpharmacological management

Abstract: Pain perception in children is complex, and is often difficult to assess. In addition, pain management in children is not always optimized in various healthcare settings, including emergency departments. A review of pain assessment scales that can be used in children across all ages, and a discussion of the importance of pain in control and distraction techniques during painful procedures are presented. Age specific nonpharmacological interventions used to manage pain in children are most effective when adapted to the developmental level of the child. Distraction techniques are often provided by nurses, parents or child life specialists and help in pain alleviation during procedures.

Pain assessment as a social transaction: beyond the "gold standard".

Abstract: Pain assessment conventionally has been viewed hierarchically with self-report as its "gold-standard." Recent attempts to improve pain management have focused on the importance of assessment, for example, the initiative to include pain as the "fifth vital sign." We question the focus in the conceptualization of pain assessment upon a "vital sign," not in terms of the importance of assessment, but in terms of the application of self-report as a mechanistic index akin to a biologic measure such as heart rate and blood pressure. We synthesize current inclusive models of pain and pain assessment and propose a more comprehensive conceptualization of pain assessment as a transaction based on an organismic interplay between the patient and clinician.

WITHDRAWN. Anticonvulsant drugs for acute and chronic pain.

Abstract: BACKGROUND Anticonvulsant drugs have been used in the management of pain since the 1960s. The clinical impression is that they are useful for chronic neuropathic pain, especially when the pain is lancinating or burning. Readers are referred to reviews of carbamazepine and gabapentin in T he Cochrane Library which replace the information on those drugs in this review. Other drugs remain unchanged at present in this review OBJECTIVES To evaluate the analgesic effectiveness and adverse effects of anticonvulsant drugs for pain management in clinical practice . Migraine and headache studies are excluded in this revision. SEARCH STRATEGY Randomised trials of anticonvulsants in acute, chronic or cancer pain were identified by MEDLINE (1966-1999), EMBASE (1994-1999), SIGLE (1980 to 1999) and the Cochrane Controlled Trials Register (CENTRAL/CCTR) (The Cochrane Library Issue 3, 1999). In addition, 41 medical journals were hand searched. Additional reports were identified from the reference list of the retrieved papers, and by contacting investigators. Date of most recent search: September 1999. SELECTION CRITERIA Randomised trials reporting the analgesic effects of anticonvulsant drugs in patients, with subjective pain assessment as either the primary or a secondary outcome. DATA COLLECTION AND ANALYSIS Data were extracted by two independent review authors, and trials were quality scored. Numbers-needed-to-treat (NNTs) were calculated from dichotomous data for effectiveness, adverse effects and drug-related study withdrawal, for individual studies and for pooled data. MAIN RESULTS Twenty-three trials of six anticonvulsants were considered eligible (1074 patients).The only placebo-controlled study in acute pain found no analgesic effect of sodium valproate.Three placebo-controlled studies of carbamazepine in trigeminal neuralgia had a combined NNT (95% confidence interval (CI)) for effectiveness of 2.5 (CI 2.0 to 3.4). A single placebo-controlled trial of gabapentin in post-herpetic neuralgia had an NNT of 3.2 (CI 2.4 to 5.0). For diabetic neuropathy NNTs for effectiveness were as follows: (one RCT for each drug) carbamazepine 2.3 (CI 1.6 to 3.8), gabapentin 3.8 (CI 2.4 to 8.7) and phenytoin 2.1 (CI 1.5 to 3.6).Numbers-needed-to-harm (NNHs) were calculated where possible by combining studies for each drug entity irrespective of the condition treated. The results were, for minor harm, carbamazepine 3.7 (CI 2.4 to 7.8), gabapentin 2.5 (CI 2.0 to 3.2), phenytoin 3.2 (CI 2.1 to 6.3). NNHs for major harm were not statistically significant for any drug compared with placebo.Phenytoin had no effect in irritable bowel syndrome, and carbamazepine little effect in post-stroke pain. Clonazepam was effective in one study of temporomandibular joint dysfunction. AUTHORS' CONCLUSIONS Although anticonvulsants are used widely in chronic pain surprisingly few trials show analgesic effectiveness. Only one study identified considered cancer pain. There is no evidence that anticonvulsants are effective for acute pain. In chronic pain syndromes other than trigeminal neuralgia, anticonvulsants should be withheld until other interventions have been tried. While gabapentin is increasingly being used for neuropathic pain the evidence would suggest that it is not superior to carbamazepine.

Parental postoperative pain management: attitudes, assessment, and management

Abstract: OBJECTIVES: Previous studies suggested that parents frequently do not adequately treat postoperative pain that is experienced at home. Reasons for these parental practices have not been extensively studied. Aims of this study were to examine parental postoperative pain assessment and management practices at home as well potential attitudinal barriers to such pain practices. METHODS: This was a longitudinal study involving 132 parents of children who were aged 2 to 12 years and undergoing elective outpatient surgery. Parental attitudes about pain assessment and management were assessed preoperatively, and children9s pain severity and analgesic administration were assessed postoperatively for the first 48 hours after discharge. RESULTS: Although postoperative parental ratings indicated significant pain, parents provided a median of only 1 dose of analgesics (range: 0–3) during the first 48 hours after surgery. In the attitudinal survey, parents9 responses have indicated significant barriers. For example, 52% of parents indicated that analgesics are addictive, and 73% reported worries concerning adverse effects. Also, 37% of parents thought that “the less often children receive analgesics, the better they work.” Regression analysis demonstrated that, overall, more preoperative attitudinal barriers to pain management were significantly associated with provision of fewer doses of analgesics by parents (P CONCLUSIONS: Parents detected pain in their children yet provided few doses of analgesics. Parents may benefit from interventions that provide them with information that addresses individual barriers regarding assessing and treating pain.

Pain Assessment and Pharmacologic Management

Abstract: Pain assessment and pharmacologic management / , Pain assessment and pharmacologic management / , کتابخانه دیجیتال جندی شاپور اهواز

Culture's effects on pain assessment and management

Abstract: OVERVIEW:Minority patients are at high risk for poor pain outcomes. When patients belong to a culture or speak a language that's different from that of their health care provider, the provider faces additional challenges in successfully assessing and managing the patients' pain. This article describ

Use of pain-behavioral assessment tools in the nursing home: expert consensus recommendations for practice.

Abstract: Many tools are available for the assessment of pain in nonverbal older adults; however, guidelines are needed to help clinicians select the proper instrument for use in the nursing home setting This article describes a project to identify clinically useful pain-behavioral assessment tools that have undergone sufficient psychometric testing Phase 1 of the project included a comprehensive review and critique of currently available tools In Phase 2 the National Nursing Home Pain Collaborative developed criteria to evaluate an updated list of tools and then rated 14 tools using these criteria As a result, two tools were recommended as most representative of current state of the science, most clinically relevant, and practically applicable to integrate into everyday practice and support adherence to regulatory guidelines Such recommendations for selection of best-available pain assessment tools are a cornerstone for clinicians in regard to managing pain of nursing home residents who, due to dementia, are unable to self-report pain

Adult Cancer Pain: Clinical Practice Guidelines in Oncology

Abstract: Pain is a common symptom associated with cancer and its treatment. Pain management is an important aspect of oncologic care, and unrelieved pain significantly comprises overall quality of life. These NCCN Guidelines list the principles of management and acknowledge the range of complex decisions faced in the management oncologic pain. In addition to pain assessment techniques, these guidelines provide principles of use, dosing, management of adverse effects, and safe handling procedures of pharmacologic therapies and discuss a multidisciplinary approach for the management of cancer pain.

Validation of the Individualized Numeric Rating Scale (INRS): A pain assessment tool for nonverbal children with intellectual disability

Abstract: Clinical observations suggest that nonverbal children with severe intellectual disability exhibit pain in a wide variety yet uniquely individual ways. Here, we investigate the feasibility and describe the initial psychometrics properties of the Individualized Numeric Rating Scale (INRS), a personalized pain assessment tool for nonverbal children with intellectual disability based on the parent’s knowledge of the child. Parents of 50 nonverbal children with severe intellectual disability scheduled for surgery were able to complete the task of describing then rank ordering their child’s usual and pain indicators. The parent, bedside nurse and research assistant (RA) triad then simultaneously yet independently scored the patient’s post-operative pain using the INRS for a maximum of two sets of pre/post paired observations. A total of 170 triad assessments were completed before (n = 85) and after (n = 85) an intervention to manage the child’s pain. INRS inter-rater agreement between the parents and research nurse was high (ICC 0.82–0.87) across all ratings. Parent and bedside nurse agreement (ICC 0.65–0.74) and bedside nurse and research nurse agreement (ICC 0.74–0.80) also suggest good reliability. A moderate to strong correlation (0.63–0.73) between INRS ratings and NCCPC-PV total scores provides evidence of convergent validity. These results provide preliminary data that the INRS is a valid and reliable tool for assessing pain in nonverbal children with severe intellectual disability in an acute care setting.

painACTION-Back Pain: A Self-Management Website for People with Chronic Back Pain

Abstract: Objective. To determine whether an interactive self-management Website for people with chronic back pain would significantly improve emotional management, coping, self-efficacy to manage pain, pain levels, and physical functioning compared with standard text-based materials. Design. The study utilized a pretest–posttest randomized controlled design comparing Website (painACTION-Back Pain) and control (text-based material) conditions at baseline and at 1-, 3, and 6-month follow-ups. Participants. Two hundred and nine people with chronic back pain were recruited through dissemination of study information online and at a pain treatment clinic. The 6-month follow-up rates for the Website and control groups were 73% and 84%, respectively. Measurements. Measures were based on the recommendations of the Initiative on Methods, Measurement, and Pain Assessment in Clinical Trials and included measures of pain intensity, physical functioning, emotional functioning, coping, self-efficacy, fear-avoidance, perceived improvement with treatment, self-efficacy, and catastrophizing. Results. Compared with controls, painACTION-Back Pain participants reported significantly: 1) lower stress; 2) increased coping self-statements; and 3) greater use of social support. Comparisons between groups suggested clinically significant differences in current pain intensity, depression, anxiety, stress, and global ratings of improvement. Among participants recruited online, those using the Website reported significantly: 1) lower “worst” pain; 2) lower “average” pain; and 3) increased coping self-statements, compared with controls. Participants recruited through the pain clinic evidenced no such differences. Conclusions. An online self-management program for people with chronic back pain can lead to improvements in stress, coping, and social support, and produce clinically significant differences in pain, depression, anxiety, and global rates of improvement.

Musculoskeletal pain is associated with very low levels of vitamin D in men: results from the European Male Ageing Study

Abstract: Introduction A study was undertaken to test the hypothesis that musculoskeletal pain is associated with low vitamin D levels but the relationship is explained by physical inactivity and/or other putative confounding factors. Methods Men aged 40–79 years completed a postal questionnaire including a pain assessment and attended a clinical assessment (lifestyle questionnaire, physical performance tests, 25-hydroxyvitamin D3 (25-(OH)D) levels from fasting blood sample). Subjects were classified according to 25-(OH)D levels as ‘normal’ (≥15 ng/ml) or ‘low’ ( Results 3075 men of mean (SD) age 60 (11) years were included in the analysis. 1262 (41.0%) subjects were pain-free, 1550 (50.4%) reported ‘other pain’ that did not satisfy criteria for chronic widespread pain (CWP) and 263 (8.6%) reported CWP. Compared with patients who were pain-free, those with ‘other pain’ and CWP had lower 25-(OH)D levels (n=239 (18.9%), n=361 (23.3) and n=67 (24.1%), respectively, p Conclusions These findings have implications at a population level for the long-term health of individuals with musculoskeletal pain.

The Relationship between Empathy, Perception of Pain and Attitudes toward Pets among Norwegian Dog Owners

Abstract: Anthropomorphism, attachment level, and belief in animal mind, as well as owners' level of empathy and attitudes toward their pets, are some of the factors that affect human–animal interactions. Owners' ability to identify painful conditions in their pets may have important consequences for the welfare of these animals. In addition to characterizing the typical Norwegian dog owner, the aim of this work was to study the relationship between empathy, attitudes, and perceived animal pain. A sample of 3,413 dog owners in Norway received an internet-based questionnaire (QuestBack™), to which1896 responded. The questionnaire included four parts: demographics, the Pet Attitude Scale (PAS), the Animal Empathy Scale (AES), and the Pain Assessment Instrument (PAI). For the PAI, participants were presented with 17 photos, showing dogs experiencing painful situations of varying degrees, and were asked to rate the level of pain they believed each animal was enduring, using a Visual Analogue Scale (VAS). Result...

The quality of emergency department pain care for older adult patients.

Abstract: OBJECTIVES: To determine whether there are differences in emergency department (ED) pain assessment and treatment for older and younger adults. DESIGN: Retrospective observational cohort. SETTING: Urban, academic tertiary care ED during July and December 2005. PARTICIPANTS: Adult patients with conditions warranting ED pain care. MEASUREMENTS: Age, Charlson comorbidity score, number of prior medications, sex, race and ethnicity, triage severity, degree of pain, treating clinician, and final ED diagnosis. Pain care process measures were pain assessment and treatment and time of activities. RESULTS: One thousand thirty-one ED visits met inclusion criteria; 92% of these had a documented pain assessment. Of those reporting pain, 41% had follow-up pain assessments, and 59% received analgesic medication (58% of these as opioids, 24% as nonsteroidal anti-inflammatory drugs (NSAIDs)). In adjusted analyses, there were no differences according to age in pain assessment and receiving any analgesic. Older patients (65–84) were less likely than younger patients (18–64) to receive opioid analgesics for moderate to severe (odds ratio (OR)=0.44, 95% confidence interval (CI)=0.22–0.88) and were more likely to more likely to receive NSAIDs for mild pain (OR=3.72, 95% CI=0.97–14.24). Older adults had a lower reduction of initial to final recorded pain scores (P=.002). CONCLUSION: There appear to be differences in acute ED pain care for older and younger adults. Lower overall reduction of pain scores and less opioid use for the treatment of painful conditions in older patients highlight disparities of concern. Future studies should determine whether these differences represent inadequate ED pain care.

Chronic Pain in People with an Intellectual Disability: Under-Recognised and Under-Treated?.

Abstract: Aim To examine the nature, prevalence and impact of chronic pain in adults with an intellectual disability (ID) based on carer report. Methods Postal questionnaires were sent to 250 care-givers and 157 responses were received (63%). Results Chronic pain was reported in 13% of the sample (n = 21), 6.3% had pain in two sites and 2% had pain in three or more sites. Of those with chronic pain, 19 experienced mild chronic pain, while severe pain was reported for two service users. Pain problems were more prevalent in those with a Mild ID than in those with more severe disability, perhaps reflecting the ability of the Mild group to communicate about their pain. Non-prescription medication was the most common form of treatment and there was a notable absence of involvement of specialist pain services. Conclusions Given their increased risk for chronic pain, we concluded that pain in the ID population may be under-recognised and under-treated, especially in those with impaired capacity to communicate about their pain.

Postoperative pain treatment SIAARTI Recommendations 2010. Short version.

Abstract: The aim of these recommendations is the revision of data published in 2002 in the "SIAARTI Recommendations for acute postoperative pain treatment". In this version, the SIAARTI Study Group for acute and chronic pain decided to grade evidence based on the "modified Delphi" method with 5 levels of recommendation strength. Analgesia is a fundamental right of the patient. The appropriate management of postoperative pain (POP) is known to significantly reduce perioperative morbidity, including the incidence of postoperative complications, hospital stay and costs, especially in high-risk patients (ASA III-V), those undergoing major surgery and those hospitalized in a critical unit (Level A). Therefore, the treatment of POP represents a high-priority institutional objective, as well as an integral part of the treatment plan for "perioperative disease", which includes analgesia, early mobilization, early enteral nutrition and active physiokinesitherapy (Level A). In order to improve an ACUTE PAIN SERVICE organization, we recommend: --a plan for pain management that includes adequate preoperative evaluation, pain measurement, organization of existing resources, identification and training of involved personnel in order to assure multimodal analgesia, early mobilization, early enteral nutrition and active physiokinesitherapy (Level A); --the implementation of an Acute Pain Service, a multidisciplinary structure which includes an anesthetist (team coordinator), surgeons, nurses, physiotherapists and eventually other specialists; --referring to high-quality indicators in establishing an APS and considering the following key points in its organization (Level C): --service adoption; --identifying a referring anesthetist who is on call 24 hours a day; --patient care during the night and weekend; --sharing, drafting and updating written therapeutic protocols; --continuous medical education; --systematic pain assessment; --data collection regarding the efficacy and safety of the implemented protocols; --at least one audit per year. --a preoperative evaluation, including all the necessary information for the management of postoperative analgesia (Level C); --to adequately inform the patient about the risks and benefits of drugs and procedures used to obtain the maximum efficacy from the administered treatments (Level D). We describe pharmacological and loco-regional techniques with special attention to day surgery and difficult populations. Risk management pathways must be the reference for early identification and treatment of adverse events and chronic pain development.

Relevance Vector Machine Learning for Neonate Pain Intensity Assessment Using Digital Imaging

Abstract: Pain assessment in patients who are unable to verbally communicate is a challenging problem. The fundamental limitations in pain assessment in neonates stem from subjective assessment criteria, rather than quantifiable and measurable data. This often results in poor quality and inconsistent treatment of patient pain management. Recent advancements in pattern recognition techniques using relevance vector machine (RVM) learning techniques can assist medical staff in assessing pain by constantly monitoring the patient and providing the clinician with quantifiable data for pain management. The RVM classification technique is a Bayesian extension of the support vector machine (SVM) algorithm, which achieves comparable performance to SVM while providing posterior probabilities for class memberships and a sparser model. If classes represent “pure” facial expressions (i.e., extreme expressions that an observer can identify with a high degree of confidence), then the posterior probability of the membership of some intermediate facial expression to a class can provide an estimate of the intensity of such an expression. In this paper, we use the RVM classification technique to distinguish pain from nonpain in neonates as well as assess their pain intensity levels. We also correlate our results with the pain intensity assessed by expert and nonexpert human examiners.