A prospective analysis of pain experience, beliefs and attitudes, and pain management of a cohort of Danish surgical patients

Surgical Patients' Evaluation of Pain Management Quality and Surgical Nurses' Pain-Related Knowledge and Attitudes

PURPOSE

The present study was aimed at investigating the quality of pain management evaluated by inpatients in surgical clinics, and pain-related knowledge and attitudes of nurses working in surgical clinics, surgical units, or emergency services.

METHODS

The study was conducted as a descriptive and cross-sectional study. The study data were collected from inpatients in surgical clinics (N = 306), and from nurses working in surgical clinics, surgical units, or emergency services (N = 57) between January 2020 and September 2020. The Revised American Pain Society Patient Outcome Questionnaire (APS-POQ-R) and Nurses' Knowledge and Attitudes Survey Regarding Pain (NKASRP) were the tools used for data collection.

RESULTS

The mean scores the participants obtained from the severity of worst pain, pain relief, and satisfaction with pain treatment components of the APS-POQ-R were 6.14 ± 2.59, 59.28 ± 22.26, and 8.99 ± 1.62, respectively. There were significant differences between many components of the APS-POQ-R in terms of such variables as age, sex, undergoing previous surgery, presence of pain before surgery, surgery performed, and type of anesthesia (p < .05). The mean score the participants obtained from the NKASRP was 15.35 ± 3.87.

CONCLUSIONS

It was concluded that the patients' pain was relieved moderately, that they were very highly satisfied with pain treatment, and that the nurses' pain-related knowledge and attitude levels were below the moderate level.

CLINICAL IMPLICATIONS

Nurses should support patients whose in-bed activities were prevented due to pain, involve them in pain treatment decisions, advise them about pain treatment options, and encourage them to use nonpharmacological methods.

Pain Prevalence and Satisfaction with Pain Management in Inpatients: A Cross-Sectional Study

BACKGROUND

Pain in hospitalized adults is underestimated and undervalued. The aim of this study was to evaluate pain prevalence and satisfaction with the hospital's pain management among patients attending a tertiary university hospital. Predictor factors of pain were also studied.

METHODS

A prospective, cross-sectional study was carried out through a structured questionnaire given on one day to all hospitalized patients in a university hospital. Clinical data, such as personal history and analgesic treatment, were collected from medical records. Other variables related to pain (including intensity rated by the visual analogue scale as well as location and patient satisfaction measured by the numerical rating scale) were also obtained.

RESULTS

Of the 274 surveyed patients, pain prevalence was 52.9%, with an average intensity of 5.3 ± 2.8 according to VAS. The overall satisfaction was 87.2%, and 72.6% had already been prescribed at least one analgesic. Patients receiving analgesics showed higher pain intensity (VAS 3.6 ± 3.4) than those without treatment (VAS 1.1 ± 2.1) (p < 0.001). However, patients with treatment showed more satisfaction (NRS 7.8 ± 2 vs. 5.3 ± 1.4, p < 0.001).

CONCLUSIONS

The prevalence of pain in hospitalized patients was high, despite the fact that patient satisfaction was also very high.

Evaluating patient outcomes in postoperative pain management according to the revised American Pain Society Patient Outcome Questionnaire (APS-POQ-R)

BACKGROUND

In the first 24 h after surgery, it is necessary to evaluate the patient responses to pain, analgesia and patient satisfaction to prevent complications related to the pain management process.

AIM

To evaluate patients' outcomes (pain qualities, side effects of the pain management, pain treatment satisfaction, non-pharmacological pain treatment methods, predictors of pain management satisfaction and percentage of pain relief) according to the Revised American Pain Society Patient Outcome Questionnaire (APS-POQ-R) in the first 24 h.

DESIGN

Cross-sectional study.

METHODS

The study sample was comprised of 700 patients, who were surgically treated at the surgical clinics of a university hospital and completed the first postoperative 24 h. The data was collected through the "Patient Information Form" and the "Turkish version of the revised American Pain Society Patient Outcome Questionnaire (APS-POQ-R)".

RESULTS

The medians of the lowest and the worst postoperative pain severity level were 3.0 and 7.0, respectively. Patients experienced severe pain in 60 % of the first postoperative 24 h and reported that 70 % of their pain eventually decreased. A positive and significant correlation was found between pain interference, pain-affected mood/emotions, the severity of pain-related side effects, the least and worst pain severity levels and severe pain, and the percentage of time experienced with severe pain.

CONCLUSIONS

Most of the patients experienced severe pain, which restricted their daily life activities and led to negative emotions. Acute postoperative pain may negatively affect patient outcomes and delay postoperative recovery during the early period. Therefore, pain should be managed in the early period to prevent physical and psychological side effects.

Status of inpatient pain therapy using the example of a general and abdominal surgery normal ward - a prospective questionnaire study to review a pain therapy algorithm ("real-world data")

Objectives

The mean pain intensity for inpatient consultations, for example in cancer patients, is known. However, the proportion of necessary consultations in the total volume of patients of a ward or a hospital, the general pain intensity in a surgical ward and the relationship between pain medication, length of stay and therapeutic success are unknown. The aim of the study was to examine surgical patients in a single normal ward subclassified into various groups (-/+ surgery, ICU stay, cancer, consultation for pain therapy etc.) during half a year with regard to their pain. For this purpose, the pain score (NAS) was recorded daily for each patient during the entire hospital stay and the change was assessed over the clinical course.

Methods

In 2017, all consecutive new admissions to a normal ward of general surgery at a university hospital ("tertiary center") were monitored over half a year according to a standardized procedure. Pain severity (measured by the "Numeric rating scale" [NRS] respectively "Visual analogue scale" [VAS]) from admission to discharge was recorded, as well as the length of stay and the administered medication. Patient groups were sub-classified as surgery, intensive care unit, cancer and pain consultation. An algorithm in two parts (part 1, antipyretics and piritramide; part 2, WHO-scheme and psychotropic drugs), which was defined years before between surgeons and pain therapists, was pursued and consequently used as a basis for the evaluation of the therapeutic success.

Results

269 patients were included in the study. The mean pain intensity of all patients at admission was VAS 2.2. Most of the groups (non-cancer, intensive care unit [ICU], non-ICU, surgical intervention (=Operation [OP]), non-OP, pain intensity greater than VAS 3) were significantly reduced in pain at discharge. An exception in this context was patients with cancer-associated pain and, thus, initiated pain consultation.

Conclusions

Since three quarters of the consultation patients also reported cancer pain, it might be possible that the lack of treatment success in both the consultation and cancer groups is associated with cancer in these patients. However, it can be shown that the successfully treated groups (without ICU-based course) had a mean length of stay from 4.2 ± 3.9 up to 8.4 ± 8.1 days (d), while the two unsuccessfully treated groups experienced a longer stay (mean"cancer", 11.1 ± 9.4 d; mean"consulation", 14.2 ± 10.3 d). Twenty-one consultation patients, in whom it had been intended to improve pain intensity, could not be successfully treated despite adapted therapy - this can be considered a consequence of the low number of patients. Since the consultation patients were the only patient group treated with part 2 of the algorithm, it can be concluded that part 1 of the algorithm is sufficient for a mean length of stay up to 9 days. For all patients above this time point, a pain consultation with adaption of medical treatment should be considered.

Differences in the neural basis and transcriptomic patterns in acute and persistent pain-related anxiety-like behaviors

Background

Both acute and persistent pain is associated with anxiety in clinical observations, but whether the underlying neural mechanisms differ is poorly understood.

Methods

We used formalin or complete Freund's adjuvant (CFA) to induce acute or persistent pain. Behavioral performance was assessed by the paw withdrawal threshold (PWT), open field (OF), and elevated plus maze (EPM) tests. C-Fos staining was used to identify the activated brain regions. Chemogenetic inhibition was further performed to examine the necessity of brain regions in behaviors. RNA sequencing (RNA-seq) was used to identify the transcriptomic changes.

Results

Both acute and persistent pain could lead to anxiety-like behavior in mice. The c-Fos expression indicates that the bed nucleus of the stria terminalis (BNST) is activated only in acute pain, whereas the medial prefrontal cortex (mPFC) is activated only in persistent pain. Chemogenetic manipulation reveals that the activation of the BNST excitatory neurons is required for acute pain-induced anxiety-like behaviors. In contrast, the activation of the prelimbic mPFC excitatory neurons is essential for persistent pain-induced anxiety-like behaviors. RNA-seq reveals that acute and persistent pain induces differential gene expression changes and protein-protein interaction networks in the BNST and prelimbic mPFC. The genes relevant to neuronal functions might underline the differential activation of the BNST and prelimbic mPFC in different pain models, and be involved in acute and persistent pain-related anxiety-like behaviors.

Conclusion

Distinct brain regions and gene expression patterns are involved in acute and persistent pain-related anxiety-like behaviors.

Postoperative Pain Management Outcomes at a Chinese Hospital: A Cross-Sectional Survey

PURPOSE

Postoperative pain is one of the most common postoperative complications, and improper management not only adds to patient suffering but also affects patients' recovery. In this study, we measured patients' postoperative pain to understand the status of patients after surgery and to identify factors influencing postoperative pain.

DESIGN

A descriptive and cross-sectional study METHODS: This survey was conducted at a large tertiary hospital in Chengdu, Sichuan Province. A total of 655 postoperative inpatients were included. The survey was conducted using the Chinese version of the Houston Pain Outcome Instrument. General patient data, pain management-related factors, and the pain management index were used to survey risk factors. We used t-tests and ANOVA for univariate analysis of each pain outcome category to explore the association with the predictor variables. Then, those variables with a significance level of 0.05 on univariate analysis were entered into multivariable regression analysis to identify parsimonious subsets of independent risk factors.

FINDINGS

In this survey, 58.7% of patients experienced moderate to severe pain in the 24-hour postoperative period, and 33.6% of patients had moderate to severe average pain over the 24-hour postoperative period. The postoperative pain impact scores on patient mood, somatic function, patient satisfaction with postoperative pain management, and pain education were 3.5 ± 2.1, 4.3 ± 3.1, 8.9 ± 1.4 and 8.2 ± 1.8, respectively. The pain management index, surgery type, insurance, and pain assessment of nurse were influential factors of postoperative pain intensity. Age, ethnicity, insurance, surgery type, patents' knowledge of pain, and pain assessment of the nurse affected the patients' postoperative physiological function (F = 3.822, R² = 0.065, P = .000). In addition, area of residence and physician attitudes affected the outcomes of patient satisfaction with pain management (F = 26.652, R² = 0.259, P = .000).

CONCLUSIONS

The incidence of moderate to severe pain in post-surgical patients remains high, and postoperative pain affects patients physically and psychologically. Special attention should be given to patients with lower income and literacy levels.

Intraoperative abobotulinumtoxinA alleviates pain after surgery and improves general wellness in a translational animal model

Pain after surgery remains a significant healthcare challenge. Here, abobotulinumtoxinA (aboBoNT-A, DYSPORT) was assessed in a post-surgical pain model in pigs. Full-skin-muscle incision and retraction surgery on the lower back was followed by intradermal injections of either aboBoNT-A (100, 200, or 400 U/pig), vehicle (saline), or wound infiltration of extended-release bupivacaine. We assessed mechanical sensitivity, distress behaviors, latency to approach the investigator, and wound inflammation/healing for 5-6 days post-surgery. We followed with immunohistochemical analyses of total and cleaved synaptosomal-associated protein 25 kD (SNAP25), glial fibrillary acidic protein (GFAP), ionized calcium-binding adaptor protein-1(Iba1), calcitonin gene-related peptide (CGRP) and substance P (SP) in the skin, dorsal root ganglia (DRG) and the spinal cord of 400 U aboBoNT-A- and saline-treated animals. At Day 1, partial reversal of mechanical allodynia in aboBoNT-A groups was followed by a full reversal from Day 3. Reduced distress and normalized approaching responses were observed with aboBoNT-A from 6 h post-surgery. Bupivacaine reversed mechanical allodynia for 24 h after surgery but did not affect distress or approaching responses. In aboBoNT-A-treated animals cleaved SNAP25 was absent in the skin and DRG, but present in the ipsilateral dorsal horn of the spinal cord. In aboBoNT-A- versus saline-treated animals there were significant reductions in GFAP and Iba1 in the spinal cord, but no changes in CGRP and SP. Analgesic efficacy of aboBoNT-A appears to be mediated by its activity on spinal neurons, microglia and astrocytes. Clinical investigation to support the use of aboBoNT-A as an analgesic drug for post-surgical pain, is warranted.

Mepivacaine Versus Bupivacaine in Adult Surgical Patients: A Meta-analysis, Trial Sequential Analysis of Randomized Controlled Trials

PURPOSE

Evidence supporting the choice between mepivacaine and bupivacaine is inconclusive. This meta-analysis aims to determine whether mepivacaine can reach a similar effect to bupivacaine after surgeries.

DESIGN

A meta-analysis, trial sequential analysis of randomized controlled trials (RCTs).

METHODS

RCTs were identified in PubMed, EMBASE (Ovid), Medline (Ovid), and Cochrane Library using a controlled vocabulary (MeSH) and keywords. There were no date and language restrictions. We strictly included RCTs comparing mepivacaine with bupivacaine. The primary outcome was motor function recovery time. Secondary outcomes included postoperative analgesic requirement, transient neurologic symptoms (TNS), pain score at 24 hours, length of stay (LOS), duration of analgesia, complications, and patient satisfaction. A trial sequential analysis (TSA) was performed for motor function recovery time, postoperative analgesic requirement, and TNS.

FINDINGS

Seven RCTs with a total of 672 patients were included. Return of motor function was quicker in patients who received mepivacaine than in those who received bupivacaine (weighted mean differences [WMD] = -2.23 minutes; 95% confidence intervals [CI], -3.58 to -0.88; P = .02; I² = 97.08%; TSA adjusted CI -17.52 to -10.9). Postoperative analgesic requirement was significantly more with mepivacaine (risk ratio [RR] = 3.23; 95% CI, 1.37-7.62; P = .01; I² = 55.11%; TSA adjusted CI 5.73-63.27). Duration of analgesia (WMD = -8.83 hours; 95% CI, -11.75 to -7.90; P < .001; I² = 0%) and LOS (WMD = -3.95 hours; 95% CI, -4.83 to -3.07; P < .001; I² = 0%) in group mepivacaine was significantly shorter compared with bupivacaine. There were no differences for TNS (RR = 3.90; 95% CI, 0.94-16.22; P = .062; I² = 72.23%), postoperative pain score (standard mean differences [SMD] = 0; 95% CI, -0.10 to 0.10; P = .972; I² = 0%), complications (RR = 1; 95% CI, 0.70-1.43; P = .998; I² = 0%), and satisfaction (RR = 0.97; 95% CI, 0.85-1.11; P = .40; I² = 45%) between bupivacaine and mepivacaine.

CONCLUSIONS

Mepivacaine appears to yield a faster return of motor function and shorter LOS compared with bupivacaine. and may be more popular in short-stay and outpatient surgery. However, the results of TSA indicate that more high-quality trials are needed to confirm the true effects.

Post-operative pain and associated factors after cesarean section at Hawassa University Comprehensive Specialized Hospital, Hawassa, Ethiopia: A cross-sectional study

Background

The most frequent obstetric surgery both in Ethiopia and around the world is the cesarean section (CS). Postoperative pain that is not well managed can have a major negative impact on surgical patient morbidity, delaying healing and the return to normal daily activities. Even though the cesarean section is one of the most commonly performed operations, postoperative pain after cesarean section and associated factors has not been studied.

Objective

To assess the magnitude and factors associated with postoperative pain after cesarean section at Hawassa University Comprehensive Specialized Hospital, Hawassa, Ethiopia.

Methods

From February 1 to September 30 in 2021, a hospital-based cross-sectional study was undertaken among women who underwent cesarean deliveries at Hawassa University Comprehensive Specialized Hospital. The patient's medical file was read, and information was gathered from them using a structured questionnaire and checklist. The information was prepared for analysis by being cleaned, coded, and put into EPI Data version 3.1 before being exported to SPSS version 20. The prevalence rate and socio-demographic details were displayed using descriptive statistics. Bivariate and multivariable logistic regression analysis was done to identify the associated factors. Variables with a p-value of <0.05 were considered statistically significant.

Results

The magnitude of moderate to severe post-operative pain after a cesarean section was 89.8% (95% CI 84.7, 93.5). Duration of procedure (AOR: 3.62, 95% CI: 1.33, 15.85), type of anesthesia (AOR: 2.38, 95% CI: 1.31, 8.71), and type of analgesics administered (AOR: 2.3, 95% CI: 1.28, 19.21) were significantly associated with moderate to severe post-operative pain.

Conclusion

In this study a significant number of parturient in this study reported moderate to severe post-cesarean pain within 24 h. The duration of the procedure, the type of anesthesia used, and the type of analgesics administered were all found to be significantly associated with postoperative pain after cesarean section.

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The magnitude of post-operative pain after a caesarean section was 89.8%.

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About 84.2% reported moderate to severe pain at 24 h after surgery.

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Duration of procedure was significantly associated to postoperative pain.

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Anesthesia type used was found to be significantly associated to postoperative pain.

Psychological factors and trajectories of post-surgical pain: A longitudinal prospective study

A significant proportion of patients do not experience relief from pain during the early postsurgical period after joint arthroplasty and are at risk for developing chronic pain. The objectives of this study were to identify biopsychosocial factors associated with acute postsurgical pain trajectories and with pain intensity and interference after 1, 3, and 12 months. Two hundred ten patients listed for joint arthroplasty filled a presurgical battery of questionnaires assessing presurgical pain intensity, catastrophizing, emotional distress, state anxiety and depression, self-efficacy, central sensitization, and executive functions. From the day after surgery, they were asked to fill a 7-day diary, including questions about postsurgical pain and postsurgical state catastrophizing. Finally, they provided data about pain intensity and interference after 1, 3, and 12 months. Predictors of acute pain trajectories were investigated using multilevel growth curve analysis. Results showed that central sensitization was a predictor of the intercept of pain trajectories and daily postsurgical catastrophizing was a significant covariate of pain intensity in the acute phase. Analyses of follow-up data showed that central sensitization was a predictor of pain intensity and pain interference at 3 and 12 months, that emotional distress was related with pain intensity and interference at 1 month, and with pain interference at 3 months, and that cognitive flexibility was associated with pain interference at 1 month. Assessment of these factors could enable to identify patients at risk for worse outcomes and to plan targeted treatments to be implemented during the patient's inward stay.

Appropriate Opioid Use After Spine Surgery: Psychobehavioral Barriers and Patient Knowledge

OBJECTIVE

To identify spine patients' barriers to appropriate postoperative opioid use, comfort with naloxone, knowledge of safe opioid disposal practices, and associated factors.

METHODS

We preoperatively surveyed 174 spine patients about psychobehavioral barriers to appropriate opioid use, comfort with naloxone, and knowledge about opioid disposal. Multivariable logistic regression identified factors associated with barriers and knowledge (α = 0.05).

RESULTS

Common barriers were fear of addiction (71%) and concern about disease progression (43%). Most patients (78%) had neutral/low confidence in the ability of nonopioid medications to control pain; most (57%) felt neutral or uncomfortable with using naloxone; and most (86%) were familiar with safe disposal. Anxiety was associated with fear of distracting the physician (adjusted odds ratio [aOR], 3.8; 95% confidence interval [CI], 1.1-14) and with lower odds of knowing safe disposal methods (aOR, 0.18; 95% CI, 0.04-0.72). Opioid use during the preceding month was associated with comfort with naloxone (aOR, 4.9; 95% CI, 2.1-12). Patients with a higher educational level had lower odds of reporting fear of distracting the physician (aOR, 0.30; 95% CI, 0.09-0.97), and those with previous postoperative opioid use had lower odds of concern about disease progression (aOR, 0.25; 95% CI, 0.09-0.63) and with a belief in tolerating pain (aOR, 0.34; 95% CI, 0.12-0.95).

CONCLUSIONS

Many spine patients report barriers to appropriate postoperative opioid use and are neutral or uncomfortable with naloxone. Some are unfamiliar with safe disposal. Associated factors include anxiety, lack of recent opioid use, and no previous postoperative use.

Influence of interpretation of pain scores on patients' perception of pain: A prospective study

Background and Aims:

Assessment of pain using pain scales is essential. In the Numeric Rating Scale (NRS), patients are asked to score their pain intensity on a scale from 0 to 10 (10- worst pain). This requires some abstract thinking by the patient, also the pain scores (PS) may not essentially communicate the patients’ need for more analgesia. We planned a study to evaluate the change in patients’ self-assessed PS after understanding clinical interpretation of the NRS.

Methods:

This prospective study was registered after approval from our hospital ethics board. Sample size estimated for the trial was 360 patients. All postoperative patients were recruited after informed consent. Patients having prolonged stay in Intensive Care Unit (more than 48 h), or those who underwent emergency surgeries were excluded. During Acute Pain Service (APS) rounds, patients were asked to rate their PS on the NRS. This was followed by a briefing about the clinical interpretation of the scale, and the patients were asked to re score their pain using the same scale. The change in pain severity was compared using Chi-square test.

Results:

Following explanation, a change in severity was seen for PS at rest [X² (9, N- 360) = 441, P < 0.001] and at movement [X² (9, N- 360) = 508, P < 0.001]. Overall, a change in PS severity was seen in 162 patients (45%). A decrease and an increase in the severity of pain was seen in 119 and 41 patients respectively.

Conclusion:

Explaining the clinical interpretation of PS on a NRS does lead to a change in patients’ self-assessed PS.

Effect of liposomal bupivacaine on opioid requirements and length of stay in colorectal enhanced recovery pathways: A systematic review and network meta-analysis

AIM

Reducing postoperative opioid consumption is a key aim of enhanced recovery after colorectal surgery protocols. Potential solutions include anaesthetic techniques such as local infiltration of anaesthetic agents or transversus abdominis plane (TAP) blocks. This study aimed to assess the efficacy of liposomal bupivacaine (LB) for colorectal resections, across a variety of anaesthetic techniques.

METHODS

PubMed, Scopus and Embase databases were searched for relevant studies assessing LB, administered by any anaesthetic technique. The primary outcome was postoperative morphine consumed (milligrams) and the secondary outcome was length of stay (days). A Bayesian network meta-analysis comparing LB versus non-LB analgesia was performed alongside meta-regression for different surgical approaches.

RESULTS

Twelve trials were included, with a total of 2512 patients. LB-based wound infiltration was most likely to reduce length of stay followed by TAP block with LB (sum under the cumulative ranking [SUCRA] 85.55 and 70.26, respectively). TAP block with LB was most likely to reduce morphine requirements, followed by wound infiltration with LB (SUCRA 83.94 and 75.73, respectively). Compared to standard analgesia, LB-based wound infiltration reduced morphine usage (mean difference 36.64 mg, 95% credibility interval 15.64-59.20) and length of stay (mean difference 1.79 days, 95% credibility interval 0.59-3.81). On meta-regression, the findings held for minimally invasive surgery only.

CONCLUSION

Although LB-based interventions were associated with reduced postoperative morphine requirements and length of stay in this network meta-analysis, the confidence in these estimates was graded as very low. Further well-executed trials are required before LB can be recommended as a first-line agent.

Quality Indicators (QI) of Acute Pain after Surgery in European Countries

OBJECTIVES

It is common practice to use pain quality indicators (QI) to accurately assess the medical care situation of patients. This literature review identifies the status quo of acute pain QI among adult inpatients.

DATA SOURCES

Studies published in English or German were identified using a systematic search on CINAHL, Cochrane Library, PubMed, Web of Science, and Google Scholar from 01/2007 to 02/2018. Additional pain management journals, conference proceedings, and websites of health organizations and pain societies were manually screened. Studies about postoperative pain in adults (≥18 years) during inpatient stay after all types of surgery in Europe were included in this review.

REVIEW/ANALYSIS METHODS

The identified study results were categorized into structural, process, and outcome indicators based on Donabedian's framework of evaluating care quality.

RESULTS

The search identified 319 citations, of which 20 studies used structure, process, and outcome data including 180,988 patients and 1,970 health care professionals to gain insight into the quality of acute pain management. Overall, 80% used patient surveys to collect data. National data on pain management are reported in five European studies (France [2], the Netherlands, Spain, and Austria).

CONCLUSIONS

European studies comprehensively comparing acute pain management results are currently missing. Thus, this report highlights the need to develop consensus-based quality indicators in management of acute pain, which take into account both the methodologic quality and the relevance to clinical practice.

Six-year trends in postoperative prescribing and use of multimodal analgesics following total hip and knee arthroplasty: A single-site observational study of pain management

BACKGROUND

Guidelines for acute postoperative pain management recommend administering analgesics in multimodal combination to facilitate synergistic benefit, reduce opioid requirements and decrease side-effects. However, limited observational research has examined the extent to which multimodal analgesics are prescribed and administered postoperatively following joint replacement.

METHODS

In this longitudinal study, we used three-point prevalence surveys to observe the 6-year trends in prescribing and use of multimodal analgesics on the orthopaedic wards of a single Australian private hospital. We collected baseline postoperative data from total hip and knee arthroplasty patients in May/June 2010 (Time 1, n = 86), and follow-up data at 1 year (Time 2, n = 199) and 5 years (Time 3, n = 188). During the follow-up, data on prescribing practices were presented to anaesthetists.

RESULTS

We found a statistically significant increase in the prescribing (p < 0.001) and use (p < 0.001) of multimodal analgesics over time. The use of multimodal analgesics was associated with lower rest pain (p = 0.027) and clinically significant reduction in interference with activities (p < 0.001) and sleep (p < 0.001). However, dynamic pain was high and rescue opioids were likely under-administered at all time points. Furthermore, while patients reported high levels of side-effects, use of adjuvant medications was low.

CONCLUSIONS

We observed significant practice change in inpatient analgesic prescribing in favour of multimodal analgesia, in keeping with contemporary recommendations. Surveys, however, appeared to identify a clinical gap in the bedside assessment and management of breakthrough pain and medication side-effects, requiring additional targeted interventions.

SIGNIFICANCE

Evaluation of 6-year trends in a large Australian metropolitan private hospital indicated substantial growth in postoperative multimodal analgesic prescribing. In the context of growing global awareness concerning multimodal analgesia, findings suggested diffusion of best-evidence prescribing into clinical practice. Findings indicated the effects of postoperative multimodal analgesia in real-world conditions outside of experimental trials. Postoperative multimodal analgesia in the clinical setting was only associated with a modest reduction in rest pain, but substantially reduced interference from pain on activities and sleep.

Analgesic Outcomes in a Danish Acute Care Hospital Following Electronic Prescribing and Analgesic Self-Administration

BACKGROUND

Despite the long-term consequences of poorly controlled postoperative pain, inadequate pain control remains a problem.

AIMS

To improve the quality of postoperative pain management, the study site, an acute care hospital in Denmark, introduced electronic prescribing with standard order-sets, and allowed patients to self-administer analgesia. This study aimed to describe analgesic prescribing, prescriptions for multimodal analgesia, analgesic administration, and patients' pain experience, in this context.

DESIGN

Point-prevalence survey.

SETTINGS

One Danish regional hospital.

PARTICIPANTS

Consecutive sample of 286 surgical inpatients comprising 65 orthopaedic, 41 gynaecological, 57 urology and 123 gastrointestinal patients.

METHODS

We evaluated the quality of postoperative pain management on four postoperative surgical wards using: (1) the Revised American Pain Society Patient Outcome Questionnaire; and (2) patient chart audit.

RESULTS

Overall, 89.2% of patients were prescribed a fixed analgesic and 71.7% were prescribed fixed analgesics in multimodal combination. Patterns of multimodal prescribing and administration varied significantly across surgical groups. Patients received 87.7% of available fixed prescriptions and 22.5% of available analgesics prescribed 'as needed'. However, patients' worst pain intensity was high (mean = 5.8/10, SD = 2) and 73.4% reported moderate-to-severe worst pain during the previous 24-hours. Patients who self-administered medications used significantly more fixed-schedule paracetamol (p = .018), non-steroidal anti-inflammatory drugs (p = .001), weak (p = .035) and strong (p < .001) opioids.

CONCLUSIONS

The availability of multimodal analgesia was high following the introduction of electronic prescribing. However, gaps remain in the administration of both fixed and 'as needed' analgesics for postoperative patients. Findings suggested that allowing patients to self-administer analgesia may increase compliance with fixed schedule prescriptions.

Patients, caregivers and nurses' attitudes toward patients' participation in knee and hip joint replacement pain management: a Q-methodology study

Background: Patients are often not actively involved in their acute pain management.Objectives: To understand the attitudes of patients, family caregivers and nurses to patient participation in pain management after their knee or hip joint replacement.Design: Q-methodological design.Methods: 45 participants were recruited, included 15 patients, 15 caregivers and 15 nurses. Forty-nine statements were rank-ordered in a Q-sort table.Results: Four factors which explained 65% of the variance were identified from factor analysis. They are named "Endurers", "Supporters", "Worriers" ,and "Wabblers".Conclusion: Each group have a significant knowledge deficit in pain management. Patients and caregivers were more likely to have a passive attitude and false cognition towards pain and analgesic drugs. Nurses often play a role as a supporter, however, it is hard for them to understand their important role in facilitating patient involvement in their pain management.

Cryotherapy Reduced Postoperative Pain in Gynecologic Surgery: A Randomized Controlled Trial

Objective

To examine the effectiveness of cryotherapy for reducing postoperative pain in patients who underwent exploratory laparotomy for gynecologic surgery.

Materials and Methods

Patients who had indication for an exploratory laparotomy gynecologic procedure were selected by attending physicians to undergo abdominal surgery via low transverse skin incision. The participants were randomized into study and control groups with simple random sampling methods. Cold packs were applied at two hours after operation for 6 hours. The visual analog scale (VAS) score was recorded at two, 6, and 12 hours after operation.

Result

One hundred cases were recruited and then divided into study and control groups equally. The mean age of both groups was 43 years. There was no difference in demographics data of both groups. Half of the participants in both groups underwent hysterectomies. At two hours after surgery, both groups had similar VAS scores. The study group had a lower VAS score at 6 and 12 hours after surgery than the control group with statistical difference. Morphine consumption within 24 hours after surgery in both the study and control groups was 2.8±3.4 and 3.0±4.4 mg, respectively, with no statistical difference. However the registration time of the first morphine requirement in the study group was statistically more prolonged than that of the control group. The lengths of hospital stay in both groups were similar. There was no complication reported in this study.

Conclusion

Cryotherapy can reduce postoperative pain. In this presented study the patients who underwent gynecologic surgery had improved pain relief and prolonged time for the first dose of the analgesic drug.

Examination of psychological risk factors for chronic pain following cardiac surgery: protocol for a prospective observational study

INTRODUCTION

Approximately 400 000 Americans and 36 000 Canadians undergo cardiac surgery annually, and up to 56% will develop chronic postsurgical pain (CPSP). The primary aim of this study is to explore the association of pain-related beliefs and gender-based pain expectations on the development of CPSP. Secondary goals are to: (A) explore risk factors for poor functional status and patient-level cost of illness from a societal perspective up to 12 months following cardiac surgery; and (B) determine the impact of CPSP on quality-adjusted life years (QALYs) borne by cardiac surgery, in addition to the incremental cost for one additional QALY gained, among those who develop CPSP compared with those who do not.

METHODS AND ANALYSES

In this prospective cohort study, 1250 adults undergoing cardiac surgery, including coronary artery bypass grafting and open-heart procedures, will be recruited over a 3-year period. Putative risk factors for CPSP will be captured prior to surgery, at postoperative day 3 (in hospital) and day 30 (at home). Outcome data will be collected via telephone interview at 6-month and 12-month follow-up. We will employ generalised estimating equations to model the primary (CPSP) and secondary outcomes (function and cost) while adjusting for prespecified model covariates. QALYs will be estimated by converting data from the Short Form-12 (version 2) to a utility score.

ETHICS AND DISSEMINATION

This protocol has been approved by the responsible bodies at each of the hospital sites, and study enrolment began May 2015. We will disseminate our results through CardiacPain.Net, a web-based knowledge dissemination platform, presentation at international conferences and publications in scientific journals.

TRIAL REGISTRATION NUMBER

NCT01842568.

Psychometric evaluation of the Danish version of a modified Revised American Pain Society Patient Outcome Questionnaire (APS-POQ-R-D) for patients hospitalized with acute abdominal pain

Background and aims This paper forms part of a study evaluating the effect of patient-controlled oral analgesia for patients admitted to hospital with acute abdominal pain. Pain is a subjective experience, and a multifaceted evaluation tool concerning patient-reported outcome measures is needed to monitor, evaluate, and guide health care professionals in the quality of pain management. The Revised American Pain Society Patient Outcome Questionnaire (APS-POQ-R) is a validated multifaceted evaluation tool for measuring patient-reported pain experiences to evaluate different pain management interventions. The aim of this study was to evaluate the psychometric properties of a modified Danish version of the Revised American Pain Society Patient Outcome Questionnaire (APS-POQ-R-D) used during and after hospitalization for patients with acute abdominal pain. Methods The APS-POQ-R was translated into Danish and two slightly different questionnaires were formed. Questionnaire one had 39 items and the six subscales pain severity (pain), perception of care (satisfaction), pain interference with function (activity) and emotions (emotion), side effects of treatment (safety), and patient-related barriers to pain management. The questionnaire focused on time during hospital stay and was to be completed at discharge. Questionnaire two included 25 items and the five subscales pain, satisfaction, activity, emotion, and safety and focused on time at home and was to be completed daily 1 week after discharge. The questionnaires were tested on 156 patients with acute abdominal pain. Internal consistency reliability and construct validity was examined. Results In both questionnaires, the results of correlations and tests for internal consistency reliability showed a Cronbach's alpha of >0.7 for the pain, activity, and emotion subscales, but the value was ≥0.69 for the satisfaction subscale. In questionnaire one, Cronbach's alpha was ≤0.64 for the safety subscale, but this was 0.73 when the item "itching" was deleted. In questionnaire two, Cronbach's alpha was ≤0.51 for the safety subscale. For the patient-barrier subscale in questionnaire one, Cronbach's alpha was ≤0.62 for any combination of the items in the subscale. The results of the construct validity and factor analysis showed a five-factor structure in questionnaire one and a three-factor structure in questionnaire two. In questionnaire one, items from the pain, activity, emotion, and safety subscales, except for the items "least pain" and "itching," loaded on factor one. In questionnaire two, all items from the pain, activity, and emotion subscales loaded on factor one. Conclusions The modified APS-POQ-R-D demonstrated adequate psychometric properties for the five subscales pain severity (pain), perception of care (satisfaction), pain interference with function (activity) and emotions (emotion), side effects of treatment (safety), but not for the patient-barrier subscale for patients hospitalized with acute abdominal pain. Consequently, the APS-POQ-R-D may be used without the patient-barrier subscale. Implications The clinical implications of this study may help clinicians with investigating how acute patients manage pain during and after hospital admission.

Spinal Cord Stimulation for Acute Pain Following Surgery for Cervical Myelopathy: A Novel Treatment Strategy

BACKGROUND

Chronic pain syndromes caused by degenerative and postinfectious changes in the cervical spine continue to pose significant management challenges to neurosurgeons and pain practitioners. The identification of an individualized treatment plan, astute surgical technique, comprehensive and multimodal analgesia, and adequate rehabilitation processes do not necessarily result in diminished pain.

CASE SUMMARY

We present the case of a patient with chronic pain treated surgically for degenerative cervical myelopathy secondary to cervical spinal stenosis. Following this surgery, the patient experienced an intractable postoperative pain syndrome that had anatomical borders, and an intensity and character that were different from the background chronic pain from which he suffered. We successfully implanted a cervical spinal cord stimulation (SCS) lead in the period following his stenosis surgery, which had good therapeutic effect on the postoperative-onset pain. To the best of our knowledge, this is the first description of SCS having a strong positive effect on an acute exacerbation of neuropathic pain. At follow-up 12 months later, assessment of the patient's pain diary revealed a modal pain intensity of 3/10 on the numeric rating scale over the preceding 3 months. The Brief Pain Inventory (Short Form) scores at this time were 10/40 in the pain severity domain and 18/70 in the interference with function domain, demonstrating the long-term effectiveness of this SCS strategy.

CONCLUSION

While SCS has hitherto been untested as a therapy for acute-onset pain, this report demonstrates its utility as a salvage treatment in select cases of uncontrollable postoperative pain.

Dexmedetomidine in combination with morphine improves postoperative analgesia and sleep quality in elderly patients after open abdominal surgery: A pilot randomized control trial

Background

Dexmedetomidine in combination with opioids has been used for postoperative analgesia. The purpose of this study was to investigate the impacts of dexmedetomidine supplemented intravenous analgesia on morphine consumption and subjective sleep quality in elderly patients after open abdominal surgery.

Methods

This was a pilot randomized controlled trial. 58 elderly patients (age ≥ 60 years) who underwent open abdominal surgery were randomized to receive either dexmedetomidine supplemented morphine analgesia (0.5 mg/ml morphine plus 2 μg/ml dexmedetomidine in 100 ml normal saline, DEX group) or morphine analgesia (0.5 mg/ml morphine in 100 ml normal saline, CTRL group) for 72 hours after surgery. Patient-controlled analgesia pump was programmed to deliver a 2ml bolus with a lockout interval of 8 minutes and a background infusion at a rate of 1 ml/h. The primary endpoint was 72-hour morphine consumption. Secondary endpoints included pain intensity, subjective sleep quality, and 30-day complications and mortality after surgery.

Results

The 72-hour morphine consumption was lower in the DEX group than in the CTRL group (median 39.0 mg [interquartile range 37.3, 41.0] in the DEX group vs. 49.0 mg [45.5, 50.0] in the CTRL group; median difference -9.0 mg [95% CI -10.0, -6.0], P < 0.001). The intensity of pain within 48 hours was lower (P<0.001 at 4, 12 and 48 hours, P = 0.007 at 24 hours) whereas the subjective quality of sleep was higher (P = 0.031 during the night of surgery and P<0.001 during the 1^st night after surgery, respectively) in the DEX group than in the CTRL group. The incidence of 30-day complications did not differ significantly between groups, but it was slightly lower in the DEX group (P = 0.060). There were no significant differences between groups regarding 30-day mortality and the incidences of adverse events.

Conclusions

For elderly patients after open abdominal surgery, dexmedetomidine supplemented analgesia decreases morphine consumption, improves analgesic effects and subjective sleep quality without increasing adverse events.

Trial registration

Chinese Clinical Trial Registry ChiCTR-IPR-14005620.

Knowledge, Attitudes, and Practices of Postoperative Pain Management by Nurses in Selected District Hospitals in Ghana

INTRODUCTION

There is documented evidence pointing to the fact that there are numerous challenges with postoperative pain (POP) management globally. However, these challenges with POP management are more profound in developing countries.

PURPOSE

The purpose of this study is to examine the knowledge, attitude, and practices of nurses concerning POP management in four selected district hospitals in Ghana.

METHODOLOGY

A descriptive, cross-sectional survey was employed to evaluate nurse's knowledge, attitude, and practices pertaining to POP management. Multistaged sampling was used to draw the respondents. An adapted version of the Nurses Knowledge and Attitudes Survey Regarding Pain instrument was used to test the knowledge, attitude, and practices of nurses and midwives. Descriptive statistics were used to analyze the data in order to present quantitative descriptions of variables in this study.

RESULTS

This study showed that nurses in the four district hospitals had knowledge deficits regarding POP management. Eighty-one representing 48% of nurses had low knowledge on POP management. An overwhelming majority of nurses (97.6%) relied on routinely rendered basic nursing skills to relieve POP and a few used pharmacological interventions. However, nurses had good attitudes toward POP management.

CONCLUSIONS

POP is ineffectively managed by nurses in district hospitals in Ghana. Nurses and midwives in Ghana need to adhere to best practices in POP management by increasing their theoretical and practical knowledge, so that there will be tangible positive change in POP management in Ghana.

RECOMMENDATIONS

Nurses must be empowered through continuous development programs to keep abreast with changing trends that pertain to POP management.

Utilization of Parenteral Morphine by Application of ATC/DDD Methodology: Retrospective Study in the Referral Teaching Hospital

BACKGROUND

Few studies analyzed the pattern of opioid analgesic utilization in hospital settings. The aim of this study was to determine the consumption pattern of parenteral morphine in patients hospitalized in the Serbian referral teaching hospital and to correlate it with utilization at the national and international level.

METHODS

In retrospective study, the required data were extracted from medical records of surgical patients who received parenteral morphine in the 5-year period, from 2011 to 2015. We used the Anatomical Therapeutic Chemical Classification/Defined Daily Doses (DDD) international system for consumption evaluation.

RESULTS

While the number of performed surgical procedures in our hospital steadily increased from 2011 to 2015, the number of inpatient bed-days decreased from 2012. However, the consumption of parenteral morphine varied and was not more than 0.867 DDD/100 bed-days in the observed period.

CONCLUSION

Based on the available data, parenteral morphine consumption in our hospital was lower compared with international data. The low level of morphine use in the hospital was in accordance with national data, and compared with other countries, morphine consumption applied for medical indications in Serbia was low. Adequate legal provision to ensure the availability of opioids, better education and training of medical personnel, as well as multidisciplinary approach should enable more rational and individual pain management in the future, not only within the hospitals.

Association of sleep disordered breathing symptoms with early postoperative analgesic requirement in pediatric ambulatory surgical patients

INTRODUCTION

Sleep disordered breathing (SDB) symptoms are associated with increased rates of opioid-induced respiratory depression as well as enhanced nociception. Consequently, practitioners often withhold or administer lower intraoperative doses of opioids out of concern for postoperative respiratory depression. Therefore, SDB may be a critical determinant of analgesic requirement in the post-anesthesia care unit (PACU). We investigated whether preoperative SDB classification was independently associated with need for PACU analgesic intervention in a cross-sectional sample of 985 children who underwent elective, painful ambulatory surgical procedures.

METHODS

Using prospectively collected data, children aged 4-17yr were grouped into two categories based on whether or not they had symptoms of SDB. Perioperative variables were compared between the exposed and control groups using Chi-squared test for categorical or t-test for continuous variables. Logistic regression analysis was used to assess the association between SDB and the odds of requiring PACU IV opioids.

RESULTS

Children with preoperative SDB symptoms (N = 325) compared with the reference group of children who did not have these symptoms had higher rates of PACU analgesic intervention (47.1% vs. 37.4%; p = 0.004) and higher mean arousal pain scores (3.7 ± 3.5 vs.1.9 ± 2.9; p < 0.001). In our primary multivariable logistic regression model adjusted for a number of variables, preoperative SDB symptoms was associated with a two-fold increased odds of receiving PACU intravenous opioid (OR = 2.01, 95%CI, 1.29-3.12; p = 0.002).

CONCLUSION

These results suggest that preoperative SDB symptoms in children undergoing ambulatory surgery, exerts a significant influence on PACU pain behavior and analgesic requirement. Mechanisms underlying this enhanced pain experience deserve further elucidation.

Reliability and Validity of the Chinese Version of the Revised American Pain Society Patient Outcome Questionnaire in Postoperative Patients

The American Pain Society Patient Outcome Questionnaire and the subsequent revised version are the most frequently reported measures of the quality of pain management. However, the reliability and validity of the revised questionnaire have not been reported in Chinese patients. This study sought to evaluate the psychometric properties of the Chinese version of the revised questionnaire in postoperative patients in China. The study was a descriptive, cross-sectional psychometric study. The revised questionnaire was translated into Chinese according to international guidelines and then administered to participants. The patients' present, average, and worst pain intensity were evaluated in face-to-face interviews. The Pain Management Index was calculated according to the worst pain intensity and the classification of analgesic drugs used by the patients. The continuous items in the revised questionnaire demonstrated excellent construct validity and acceptable internal consistency reliability (0.732). Cronbach's alpha coefficients for the following subscales were acceptable: pain severity and sleep interference (0.773), activity interference (0.812), affective (0.824), and adverse effects (0.636); the exception was for the perception of pain care subscale (0.492). Patients with different anticipated pain management outcomes were differentiated as expected. Satisfaction could be predicted (31.3% of the variance) using subscales and items in the questionnaire. Although our evidence supports the psychometric properties of the Chinese version of the revised questionnaire when tested with postoperative patients, further study is needed, especially on the subscale perception of pain care.

Liposomal bupivacaine infiltration at the surgical site for the management of postoperative pain

BACKGROUND

Despite multi-modal analgesic techniques, acute postoperative pain remains an unmet health need, with up to three quarters of people undergoing surgery reporting significant pain. Liposomal bupivacaine is an analgesic consisting of bupivacaine hydrochloride encapsulated within multiple, non-concentric lipid bi-layers offering a novel method of sustained-release analgesia.

OBJECTIVES

To assess the analgesic efficacy and adverse effects of liposomal bupivacaine infiltration at the surgical site for the management of postoperative pain.

SEARCH METHODS

On 13 January 2016 we searched CENTRAL, MEDLINE, MEDLINE In-Process, Embase, ISI Web of Science and reference lists of retrieved articles. We obtained clinical trial reports and synopses of published and unpublished studies from Internet sources, and searched clinical trials databases for ongoing trials.

SELECTION CRITERIA

Randomised, double-blind, placebo- or active-controlled clinical trials in people aged 18 years or over undergoing elective surgery, at any surgical site, were included if they compared liposomal bupivacaine infiltration at the surgical site with placebo or other type of analgesia.

DATA COLLECTION AND ANALYSIS

Two review authors independently considered trials for inclusion, assessed risk of bias, and extracted data. We performed data analysis using standard statistical techniques as described in the Cochrane Handbook for Systematic Reviews of Interventions, using Review Manager 5.3. We planned to perform a meta-analysis and produce a 'Summary of findings' table for each comparison however there were insufficient data to ensure a clinically meaningful answer. As such we have produced two 'Summary of findings' tables in a narrative format. Where possible we assessed the quality of evidence using GRADE.

MAIN RESULTS

We identified nine studies (10 reports, 1377 participants) that met inclusion criteria. Four Phase II dose-escalating/de-escalating trials, designed to evaluate and demonstrate efficacy and safety, presented pooled data that we could not use. Of the remaining five parallel-arm studies (965 participants), two were placebo controlled and three used bupivacaine hydrochloride local anaesthetic infiltration as a control. Using the Cochrane tool, we judged most studies to be at unclear risk of bias overall; however, two studies were at high risk of selective reporting bias and four studies were at high risk of bias due to size (fewer than 50 participants per treatment arm).Three studies (551 participants) reported the primary outcome cumulative pain intensity over 72 hours following surgery. Compared to placebo, liposomal bupivacaine was associated with a lower cumulative pain score between the end of the operation (0 hours) and 72 hours (one study, very low quality). Compared to bupivacaine hydrochloride, two studies showed no difference for this outcome (very low quality evidence), however due to differences in the surgical population and surgical procedure (breast augmentation versus knee arthroplasty) we did not perform a meta-analysis.No serious adverse events were reported to be associated with the use of liposomal bupivacaine and none of the five studies reported withdrawals due to drug-related adverse events (moderate quality evidence).One study reported a lower mean pain score at 12 hours associated with liposomal bupivacaine compared to bupivacaine hydrochloride, but not at 24, 48 or 72 hours postoperatively (very low quality evidence).Two studies (382 participants) reported a longer time to first postoperative opioid dose compared to placebo (low quality evidence).Two studies (325 participants) reported the total postoperative opioid consumption over the first 72 hours: one study reported a lower cumulative opioid consumption for liposomal bupivacaine compared to placebo (very low quality evidence); one study reported no difference compared to bupivacaine hydrochloride (very low quality evidence).Three studies (492 participants) reported the percentage of participants not requiring postoperative opioids over initial 72 hours following surgery. One of the two studies comparing liposomal bupivacaine to placebo demonstrated a higher number of participants receiving liposomal bupivacaine did not require postoperative opioids (very low quality evidence). The other two studies, one versus placebo and one versus bupivacaine hydrochloride, found no difference in opioid requirement (very low quality evidence). Due to significant heterogeneity between the studies (I2 = 92%) we did not pool the results.All the included studies reported adverse events within 30 days of surgery, with nausea, constipation and vomiting being the most common. Of the five parallel-arm studies, none performed or reported health economic assessments or patient-reported outcomes other than pain.Using GRADE, the quality of evidence ranged from moderate to very low. The major limitation was the sparseness of data for outcomes of interest. In addition, a number of studies had a high risk of bias resulting in further downgrading.

AUTHORS' CONCLUSIONS

Liposomal bupivacaine at the surgical site does appear to reduce postoperative pain compared to placebo, however, at present the limited evidence does not demonstrate superiority to bupivacaine hydrochloride. There were no reported drug-related serious adverse events and no study withdrawals due to drug-related adverse events. Overall due to the low quality and volume of evidence our confidence in the effect estimate is limited and the true effect may be substantially different from our estimate.

Emergency Department Patient Perspectives on the Risk of Addiction to Prescription Opioids

OBJECTIVE

To characterize emergency department (ED) patients' knowledge and beliefs about the addictive potential of opioids.

DESIGN

Mixed methods analysis of data from a randomized controlled trial.

SETTING

Urban academic ED (>88,000 visits).

SUBJECTS

One hundred and seventy four discharged ED patients prescribed hydrocodone-acetaminophen for acute pain.

METHODS

The study analyzed data collected from a randomized controlled trial investigating patients' knowledge of opioids. ED patients discharged with hydrocodone-acetaminophen completed an audio-recorded phone interview 4–7 days later. This analysis focuses on responses about addiction. Responses were categorized using content analysis; thematic analysis identified broad themes common across different categories.

RESULTS

Participants' mean age was 45.5 years (SD, 14.8), 58.6% female, 50.6% white, and the majority had an orthopedic diagnosis (24.1% back pain, 52.3% other injuries). Responses were categorized first based on whether the patient believed that opioids could be addictive (categorized as: yes, 58.7%; no, 19.5%; depends, 17.2%; or do not know, 4.6%), and second based on whether or not the patient discussed his/her own experience with the medication (categorized as: personalized, 35.6%; or not personalized, 64.4%). Cohen's Kappa was 0.84 for all categories. Three themes emerged in the thematic analysis: theme 1) patients expect to “feel” addicted if they are addicted, theme 2) patients fear addiction, and theme 3) side effects affected patient views of addiction.

CONCLUSION

In this sample, patients had misconceptions about opioid addiction. Some patients did not know opioids could be addictive, others underestimated their personal risk of addiction, and others overtly feared addiction and, therefore, risked inadequate pain management. Despite limited data, we recommend providers discuss opioid addiction with their patients.

Liposomal bupivacaine peripheral nerve block for the management of postoperative pain

BACKGROUND

Postoperative pain remains a significant issue with poor perioperative pain management associated with an increased risk of morbidity and mortality. Liposomal bupivacaine is an analgesic consisting of bupivacaine hydrochloride encapsulated within multiple, non-concentric lipid bi-layers offering a novel method of sustained release.

OBJECTIVES

To assess the analgesic efficacy and adverse effects of liposomal bupivacaine infiltration peripheral nerve block for the management of postoperative pain.

SEARCH METHODS

We identified randomised trials of liposomal bupivacaine peripheral nerve block for the management of postoperative pain. We searched the Cochrane Central Register of Controlled Trials (CENTRAL) (2016, Issue 1), Ovid MEDLINE (1946 to January Week 1 2016), Ovid MEDLINE In-Process (14 January 2016), EMBASE (1974 to 13 January 2016), ISI Web of Science (1945 to 14 January 2016), and reference lists of retrieved articles. We sought unpublished studies from Internet sources, and searched clinical trials databases for ongoing trials. The date of the most recent search was 15 January 2016.

SELECTION CRITERIA

Randomised, double-blind, placebo- or active-controlled clinical trials of a single dose of liposomal bupivacaine administered as a peripheral nerve block in adults aged 18 years or over undergoing elective surgery at any surgical site. We included trials if they had at least two comparison groups for liposomal bupivacaine peripheral nerve block compared with placebo or other types of analgesia.

DATA COLLECTION AND ANALYSIS

Two review authors independently considered trials for inclusion in the review, assessed risk of bias, and extracted data. We performed analyses using standard statistical techniques as described in the Cochrane Handbook for Systematic Reviews of Interventions, using Review Manager 5. We planned to perform a meta-analysis, however there were insufficient data to ensure a clinically meaningful answer; as such we have produced a 'Summary of findings' table in a narrative format, and where possible we assessed the evidence using GRADE (Grading of Recommendations Assessment, Development and Evaluation).

MAIN RESULTS

We identified seven studies that met inclusion criteria for this review. Three were recorded as completed (or terminated) but no results were published. Of the remaining four studies (299 participants): two investigated liposomal bupivacaine transversus abdominis plane (TAP) block, one liposomal bupivacaine dorsal penile nerve block, and one ankle block. The study investigating liposomal bupivacaine ankle block was a Phase II dose-escalating/de-escalating trial presenting pooled data that we could not use in our analysis.The studies did not report our primary outcome, cumulative pain score between 0 and 72 hours, and secondary outcomes, mean pain score at 12, 24, 48, 72, or 96 hours. One study reported no difference in mean pain score during the first, second, and third postoperative 24-hour periods in participants receiving liposomal bupivacaine TAP block compared to no TAP block. Two studies, both in people undergoing laparoscopic surgery under TAP block, investigated cumulative postoperative opioid dose, reported opposing findings. One found a lower cumulative opioid consumption between 0 and 72 hours compared to bupivacaine hydrochloride TAP block and one found no difference during the first, second, and third postoperative 24-hour periods compared to no TAP block. No studies reported time to first postoperative opioid or percentage not requiring opioids over the initial 72 hours. No studies reported a health economic analysis or patient-reported outcome measures (outside of pain). The review authors sought data regarding adverse events but none were available, however there were no withdrawals reported to be due to adverse events.Using GRADE, we considered the quality of evidence to be very low with any estimate of effect very uncertain and further research very likely to have an important impact on our confidence in the estimate of effect. All studies were at high risk of bias due to their small sample size (fewer than 50 participants per arm) leading to uncertainty around effect estimates. Additionally, inconsistency of results and sparseness of data resulted in further downgrading of the quality of the data.

AUTHORS' CONCLUSIONS

A lack of evidence has prevented an assessment of the efficacy of liposomal bupivacaine administered as a peripheral nerve block. At present there is a lack of data to support or refute the use of liposomal bupivacaine administered as a peripheral nerve block for the management of postoperative pain. Further research is very likely to have an important impact on our confidence in the estimate of effect and is likely to change the estimate.

Developing 'subject matter experts': an improvement methodology programme for acute postoperative pain with patients post major surgery

AIMS AND OBJECTIVES

To determine the effectiveness of an improvement methodology initiative, directed at refining the quality of acute pain management of patients in the first 24 hours post major surgery using the Revised American Pain Society Patient Outcome Questionnaire, pre- and post development of a 'subject matter experts' acute pain programme.

BACKGROUND

Accurately measuring effectiveness of acute pain management post major surgery is intertwined with measuring overall patient satisfaction. A critical element of quality evaluation is obtaining direct feedback from patients about the here-and-now pain experiences post major surgery.

METHODS

A prospective cross-sectional, observational study was conducted in a large university hospital in Ireland. The questionnaire was completed with patients within 24 hours post major surgery, i.e., cardiothoracic, breast, gynaecological, gastrointestinal and urology surgery. The nurse participants were selected based on their commitment to play a key role in acute pain management. The study consisted of: a pre programme phase (n = 100 patients), an intervention phase - 'subject matter experts' acute pain programme (n = 24 nurses) and a postprogramme phase (n = 100 patients).

RESULTS

Over a quarter of patients were in severe pain for long periods in the first 24 hours post major surgery. These findings were linked not only to ineffective analgesia from some pain drug therapies but also to contradictory messages from nurses. Over half of the patients' pre- and postintervention reported satisfaction with acute pain management, whereas the remainder were dissatisfied and some sought answers to their suboptimum pain status. The 'subject matter experts' had a noteworthy impact on the patients' pain beliefs.

CONCLUSIONS

The findings revealed that a 'subject matter experts' acute pain programme can have a positive impact on pain management in the immediate phase post major surgery.

RELEVANCE TO CLINICAL PRACTICE

The role making of 'subject matter experts' in acute pain is a tactical approach towards achieving optimum patient pain control in the immediate phase post major surgery.

[Pain assessment in routine care : A prospective observational study in an orthopedic unit]

INTRODUCTION

Although well-established guidelines give advice on how to use analgesics, measure pain, and organize pain treatment, many patients still suffer from avoidable severe pain. We assume one reason for this is that pain is inadequately addressed in routine patient contacts. Thus, we aimed to evaluate the extent to which pain was addressed during patient contacts in routine orthopedic care.

MATERIALS AND METHODS

In a prospective observational study in an orthopedic unit of a university hospital, we invited physicians and nurses during their routine patient contacts to be observed by independent, trained monitors. The monitors systematically assessed all pain-related aspects, which were analyzed descriptively afterwards.

RESULTS

The monitors documented 572 physician-patient contacts with 7 physicians and 108 patients and 578 nurse-patient contacts with 12 nurses and 102 patients. Physicians and nurses asked their patients about pain in 20 and 16 % of the patient contacts, respectively. While in physician-patient contacts, patients most frequently addressed their current pain situation (in 35 % of contacts), in nurse-patient contacts, patients most frequently addressed their need for analgesics (52 %). Patients rated their pain intensity in 16 % of physician-patient contacts vs. 17 % of nurse-patient contacts.

CONCLUSIONS

Using a comprehensive external monitoring procedure, we found that systematic pain assessment was not optimally standardized and implemented for systematic, individualized pain therapy by physicians or nurses in our routine care setting.

Patients' experiences and actions when describing pain after surgery--a critical incident technique analysis

BACKGROUND

Postoperative pain assessment remains a significant problem in clinical care despite patients wanting to describe their pain and be treated as unique individuals. Deeper knowledge about variations in patients' experiences and actions could help healthcare professionals to improve pain management and could increase patients' participation in pain assessments.

OBJECTIVE

The aim of this study was, through an examination of critical incidents, to describe patients' experiences and actions when needing to describe pain after surgery.

METHODS

An explorative design involving the critical incident technique was used. Patients from one university and three county hospitals in both urban and rural areas were included. To ensure variation of patients a strategic sampling was made according to age, gender, education and surgery. A total of 25 patients who had undergone orthopaedic or general surgery was asked to participate in an interview, of whom three declined.

FINDINGS

Pain experiences were described according to two main areas: "Patients' resources when in need of pain assessment" and "Ward resources for performing pain assessments". Patients were affected by their expectations and tolerance for pain. Ability to describe pain could be limited by a fear of coming into conflict with healthcare professionals or being perceived as whining. Furthermore, attitudes from healthcare professionals and their lack of adherence to procedures affected patients' ability to describe pain. Two main areas regarding actions emerged: "Patients used active strategies when needing to describe pain" and "Patients used passive strategies when needing to describe pain". Patients informed healthcare professionals about their pain and asked questions in order to make decisions about their pain situation. Selfcare was performed by distraction and avoiding pain or treating pain by themselves, while others were passive and endured pain or refrained from contact with healthcare professionals due to healthcare professionals' large work load.

Differential effects of general anesthetics on anxiety-like behavior in formalin-induced pain: involvement of ERK activation in the anterior cingulate cortex

RATIONALE

Pain-related anxiety and depression are well known to be comorbid with chronic pain and adversely affect patient quality of life. Recent studies have shown that anxiety-like behaviors also develop with acute surgical pain, but the effects of general anesthetics on acute pain-related anxiety are unknown.

OBJECTIVE

The present study aimed to compare the effects of different general anesthetics on anxiety-like behaviors that follow formalin-induced acute pain in a rat model.

METHODS

Formalin-induced acute inflammatory pain was established by intraplantar injection of 1% formalin without anesthesia or with anesthesia using the clinical anesthetics sevoflurane, propofol, or pentobarbital sodium. Anxiety-like behaviors were studied using the open-field test and elevated plus maze. Phosphorylated extracellular signal-regulated kinase (p-ERK) 1/2 expression in the anterior cingulate cortex (ACC) and spinal cord was examined using immunohistochemistry.

RESULTS

Anxiety-like behaviors were observed at 24 and 72 h post-formalin injection. Concomitantly, p-ERK 1/2 expression was upregulated in the ACC at 1 and 24 h post-formalin injection. While all three general anesthetics effectively blocked nociceptive responses and activation of ERK in the rat ACC following formalin injection during anesthesia, only sevoflurane inhibited ERK activation in the spinal cord and ACC at 24 h post-injection.

CONCLUSIONS

This study suggests that sevoflurane, but not intravenous anesthetics, inhibits pain-related anxiety, along with ERK activation in the ACC, probably through inhibition of spinal nociceptive transmission. Intraoperative application of inhaled anesthetics may be a better choice to reduce postoperative anxiety.

Cross-cultural examination of the structure of the Revised American Pain Society Patient Outcome Questionnaire (APS-POQ-R)

This study investigated the cross-cultural factor stability and internal consistency of the Revised American Pain Society Patient Outcome Questionnaire (APS-POQ-R), a measure of the quality of postoperative pain management used internationally. We conducted exploratory factor analysis (EFA) of APS-POQ-R data from 2 point prevalence studies comprising 268 and 311 surveys of Danish and Australian medical-surgical patients, respectively. Parallel analysis indicated 4- and 3-factor solutions for Danish and Australian patients, respectively, which accounted for 58.1% and 52.9% of variance. Internal consistency was unsatisfactory among both Danish (Cronbach α = .54) and Australian (Cronbach α = .63) cohorts. There was a high degree of between-group similarity in item-factor loadings of variables coded as "pain experience," but not "pain management." This finding reflected cross-cultural differences in ratings of treatment satisfaction. For Danish patients, satisfaction was associated with the degree of pain severity and activity interference, whereas for Australian patients, satisfaction was associated with their perceived ability to participate in treatment. To facilitate further cross-cultural comparison, we compared our findings with past research conducted in the United States and Iceland. EFA supported the construct validity of the APS-POQ-R as a measure of "pain experience" but indicated that items measuring "pain management" may vary cross-culturally. Findings highlighted the need for further validation of the APS-POQ-R internationally.

PERSPECTIVE

This study revealed the APS-POQ-R as a valid measure of postoperative pain experience for Danish and Australian patients. Measures of patients' perception of pain management were not robust to group differences in treatment expectations and demonstrated cross-cultural instability. Results highlighted the difficulties in establishing stable cross-cultural, cross-population subscales for the APS-POQ-R.

Pharmacokinetic properties of single- and repeated-dose sufentanil sublingual tablets in healthy volunteers

PURPOSE

Sufentanil is a μ-opioid agonist with a high therapeutic index in preclinical studies and no active metabolites, and it is highly lipophilic, thereby enabling a transmucosal route of administration. Rapid distribution from the plasma after IV sufentanil administration results in a short duration of action requiring excessive repeated dosing if used for postoperative analgesia. The sufentanil sublingual tablet system (SSTS) is a handheld, preprogrammed, patient-controlled analgesia system designed to allow patients to self-administer sufentanil 15-μg tablets under their tongue with a 20-minute lockout. The pharmacokinetic (PK) characteristics of sufentanil, administered by different routes of delivery and after single and repeated sublingual (SL) administration, were examined in 2 studies.

METHODS

A randomized, open-label, crossover study in healthy subjects evaluated the PK profile of sufentanil 15 μg administered by different routes: IV, SL, buccal (BU), and PO. A second open-label, crossover study in healthy subjects evaluated the PK parameters after single and repeated doses (full SSTS drug cartridge of 40 consecutive SL doses administered every 20 minutes) of a sufentanil 15-μg SL tablet. Doses were self-administered using the SSTS.

FINDINGS

In the route of administration study (n = 25), mean Cmax values were highest with IV administration, and bioavailability values were: SL, 59%; BU, 78%; and PO, 9%. The absorption across the oral mucosa was associated with a median plasma half-time (time from Cmax to 50% of Cmax) that was 25-fold longer (2.5 hours) with SL versus IV administration (0.1 hours). In the single- and repeated-dose study (n = 38), mean AUC0-∞ was 125.5 h · pg/mL, and Cmax was 35.0 pg/mL, with a median Tmax of 0.8 hours after the administration of a single sufentanil SL tablet. With 40 consecutive doses, Cmax was 8-fold higher compared with that of a single dose, and steady state was achieved after the 13th dose. Median plasma half-time after the 40th dose was not statistically longer than that after a single dose (2.7 vs 2.2 hours, respectively), and the median Tmax was 0.3 hours after the last repeated dose.

IMPLICATIONS

These study results support the viability of the SSTS for use in patient-controlled analgesia. The wide range of mean drug concentrations achieved after repeated dosing at 20-minute intervals compared with those with a single dose suggests the flexibility of patient-controlled dosing to meet individual analgesic requirements. The prolonged plasma half-time with SL administration is expected to provide a more appropriate duration of analgesia compared with that of IV administration, and the PK properties of repeated-dose administration support a 20-minute lockout interval.

Development of a Management Algorithm for Post-operative Pain (MAPP) after total knee and total hip replacement: study rationale and design

BACKGROUND

Evidence from clinical practice and the extant literature suggests that post-operative pain assessment and treatment is often suboptimal. Poor pain management is likely to persist until pain management practices become consistent with guidelines developed from the best available scientific evidence. This work will address the priority in healthcare of improving the quality of pain management by standardising evidence-based care processes through the incorporation of an algorithm derived from best evidence into clinical practice. In this paper, the methodology for the creation and implementation of such an algorithm that will focus, in the first instance, on patients who have undergone total hip or knee replacement is described.

METHODS

In partnership with clinicians, and based on best available evidence, the aim of the Management Algorithm for Post-operative Pain (MAPP) project is to develop, implement, and evaluate an algorithm designed to support pain management decision-making for patients after orthopaedic surgery. The algorithm will provide guidance for the prescription and administration of multimodal analgesics in the post-operative period, and the treatment of breakthrough pain. The MAPP project is a multisite study with one coordinating hospital and two supporting (rollout) hospitals. The design of this project is a pre-implementation-post-implementation evaluation and will be conducted over three phases. The Promoting Action on Research Implementation in Health Services (PARiHS) framework will be used to guide implementation. Outcome measurements will be taken 10 weeks post-implementation of the MAPP. The primary outcomes are: proportion of patients prescribed multimodal analgesics in accordance with the MAPP; and proportion of patients with moderate to severe pain intensity at rest. These data will be compared to the pre-implementation analgesic prescribing practices and pain outcome measures. A secondary outcome, the efficacy of the MAPP, will be measured by comparing pain intensity scores of patients where the MAPP guidelines were or were not followed.

DISCUSSION

The outcomes of this study have relevance for nursing and medical professionals as well as informing health service evaluation. In establishing a framework for the sustainable implementation and evaluation of a standardised approach to post-operative pain management, the findings have implications for clinicians and patients within multiple surgical contexts.

Postoperative pain management among surgically treated patients in an Ethiopian hospital

Background

Incidence of postoperative pain has been reported to be between 47–100%. Ineffective postoperative pain management results in tangible and intangible costs. The purpose of this study was to assess the processes and outcomes of pain management in the surgical wards of Jimma University Specialized Hospital, Ethiopia.

Methods and Findings

A prospective cross sectional study was conducted among 252 postoperative patients during February 13 to April 30, 2012. A contextually modified and validated (Cronbach’s α coefficient of 0.78) American Pain Society Patient Outcome Questionnaire was used to assess pain experience of patients. Patients’ charts were reviewed to assess the pattern of analgesic use. Incidence of postoperative pain was 91.4%, and remained high over 3 measurements (McNemar’s; p<0.05), and 80.1% of the patients were undertreated. The mean pain intensity, and pain interference on functional status were 6.72±1.44 and 5.61±1.13 on a 10 point Numerical rating scale respectively; both being strongly correlated(r = 0.86: p<0.001). Pain intensity was varied by ethnicity, education and preoperative information (ANOVA; P<0.05). Only 50% of the patients were adequately satisfied with their pain management. As needed (prn), solo analgesic, null analgesic, and intramuscular orders were noted for 31.3%, 89.29%, 9.7% and 20.1% of the prescription orders respectively. Though under dose, diclofenac and tramadol were the top prescribed medications, and only 57% of their dose was administered. Linear regression model showed that the predictors of satisfaction were sex of an individual and pain interference with functional status.

Conclusion

Despite patients’ paradoxical high satisfaction with pain management, the majority of patients were inadequately and inappropriately treated. Thus, further research is needed to determine how best to break down current barriers to effective pain management.

Quality pain management in the hospital setting from the patient's perspective

BACKGROUND

Pain management is a crucial issue for patients, and patients' perception of care is an important quality outcome criterion for health care institutions. Pain remains a common problem in hospitals, with subsequent deleterious effects on well-being.

OBJECTIVES

To assess the epidemiology of pain (frequency, severity, and interference), patient participation in pain treatment decisions, and patient satisfaction with care in a hospital setting.

METHODS

A point-prevalence study was conducted. Data were collected with the American Pain Society Patient Outcome Questionnaire (Icelandic version). Participants (n = 308) were ≥ 18 years old, alert, and hospitalized for ≥ 24 hours.

RESULTS

The response rate was 73%. The mean age of participants was 67.5 (SD = 17.4; range 18 to 100) years, and 49% were men. Pain prevalence in the past 24 hours was 83%, mean worst pain severity was 4.6 (SD = 3.1), and 35% experienced severe pain (≥ 7 on 0 to 10 scale). Moderate to severe interference with activities and sleep was experienced by 36% and 29% of patients respectively. Patient participation in decision making was weakly associated with spending less time in severe pain and better pain relief. Patient satisfaction was related to spending less time in severe pain, better pain relief, and lower pain severity (P < 0.05).

CONCLUSIONS

Pain was both prevalent and severe in the hospital, but patient participation in decision making was related to better outcomes. Optimal pain management, with emphasis on patient participation in decision making, should be encouraged in an effort to improve the quality of care in hospitals.

Numeric rating scale: patients' perceptions of its use in postoperative pain assessments

AIM

The purpose of this study was to describe how patients perceive the use of the numeric rating scale in postoperative pain assessments.

BACKGROUND

There are recommendations to use a pain scale to follow patients' postoperative pain. Most patients prefer the NRS but there is a discrepancy between patients and healthcare professionals how to interpret the ratings from the pain assessments.

METHODS

A descriptive design with a phenomenographic approach was used. Semi structured interviews were held with 25 patients.

RESULTS

Three description categories emerged that illustrate patients' perceptions; use of the NRS facilitated communication of pain, it put demands on healthcare professionals and care routines and it contained interpretation difficulties.

CONCLUSION

The NRS has a place in pain management according to the patients but there is a need for a dialogue to give the patients the opportunity to describe their pain and set a common goal.

Patient attitudes and beliefs regarding pain medication after cardiac surgery: barriers to adequate pain management

Several studies have outlined the impact of patient's beliefs on their level of pain relief after surgery and have underlined that misconceptions are barriers to effective pain relief. The aim of this survey was to evaluate the beliefs of the patients to help create a specifically adapted pain education program. After ethics approval, all patients scheduled to undergo cardiac surgery of any kind were approached and asked to complete a voluntary, non-nominative questionnaire that included the Barriers Questionnaire and the Screening Tool for Addiction Risk (STAR) Questionnaire. All completed questionnaires were collected from the charts every evening or the morning before surgery. Of 564 patients scheduled for surgery, 379 patients (67.5%) returned questionnaires. The average age was 60.3 years, and 66.0% were male. Results of the Barriers Questionnaire showed that 31% of patients were in strong agreement that "it is easy to become addicted to pain medication," 20% agreed that "good patients do not speak of their pain," and 36% believe that "pain medication should be saved in case pain worsens." Little or no gains have been made in decreasing misconceptions related to the treatment of pain. This study underlines the considerable need for and absolute necessity to provide pain education to patients undergoing cardiac surgery.