Preempting the memory of pain

Women Treated for Breast Cancer Experiences of Chemotherapy-Induced Pain: Memories, Any Present Pain, and Future Reflections

BACKGROUND

Breast cancer survivors make up a growing population facing treatment that poses long-standing adverse effects including chemotherapy-related body function changes and/or pain. There is limited knowledge of patients' lived experiences of chemotherapy-induced pain (CHIP).

OBJECTIVE

The aim of this study was to explore CHIP and any long-standing pain experiences in the lifeworld of breast cancer survivors.

METHODS

Fifteen women participated in a follow-up interview a year after having experienced CHIP. They were interviewed from a lifeworld perspective; the interviews were analyzed through guided phenomenology reflection.

RESULTS

A past perspective: CHIP is often described in metaphors, leads to changes in a patient's lifeworld, and impacts lived time. The women become entirely dependent on others but at the same time feel isolated and alone. Existential pain was experienced as increased vulnerability. Present perspective: Pain engages same parts of the body, but at a lower intensity than during CHIP. The pain creates time awareness. Expected normality in relationships/daily life has not yet been achieved, and a painful existence emerges in-between health and illness. Future perspective: There are expectations of pain continuing, and there is insecurity regarding whom to turn to in such cases. A painful awareness emerges about one's own and others' fragile existence.

CONCLUSIONS

Experiencing CHIP can impact the lifeworld of women with a history of breast cancer. After CHIP, there are continued experiences of pain that trigger insecurity about whether one is healthy.

IMPLICATIONS FOR PRACTICE

Cancer survivors would likely benefit from communication and information about and evaluation of CHIP.

The effect of intravenous paracetamol on postoperative pain after lumbar discectomy

Study Design

A randomized, double-blinded controlled trial.

Purpose

Postoperative pain relief especially using analgesic drugs with minimal side effects has considerable clinical importance. This study aimed to examine the effect of intravenous paracetamol on pain relief after lumbar discectomy as a major surgery.

Overview of Literature

Patients undergoing lumbar discectomy experience a high degree of lumbar pain. Some authors emphasize the use of intravenous paracetamol to improve postoperative pain and increase patients' satisfaction following this surgery.

Methods

Fifty-two patients scheduled for lumbar discectomy were randomly allocated into two groups: a group that received intravenous paracetamol (1 g/100 mL normal saline) within the last 20 minutes of surgery as the case group (n=24) and a group that received sodium chloride 0.9% 100 mL as the control group (n=28). Postoperative pain was assessed at 1, 6, 12, 18, and 24 hours after surgery by a visual analogue scale (VAS). The dosage of the administered opioid (morphine), as well as drug-related side effects within the first 24 hours after surgery were also recorded.

Results

The mean VAS score was significantly lower in the paracetamol group than the controls for all of the assessed time points. Although the dose of the administered morphine was numerically lower in the paracetamol group, this difference was not statistically significant (5.53±4.49 mL vs. 7.85±4.17 mL).

Conclusions

Intravenous paracetamol as a non-opioid analgesic can relieve postoperative pain in patients undergoing lumbar discectomy; however, its use alone may not represent the best regimen for reducing the needed dose of opioids after operation.

Efficacy and speed of onset of pain relief of fast-dissolving paracetamol on postsurgical dental pain: two randomized, single-dose, double-blind, placebo-controlled clinical studies

BACKGROUND

Paracetamol (APAP), also known as acetaminophen, is the most commonly used over-the-counter analgesic for the treatment of mild-to-moderate pain. However, the speed of onset of pain relief is limited mainly to the standard, immediate-release formulation. Efficacy and speed of onset of pain relief are critical in acute pain situations such as postsurgical dental pain, because reducing pain can improve clinical outcome and reduce the risk of transition from acute pain to more chronic pain. Efficacy and rapid onset also reduce the risk of excessive dosing with the analgesic.

OBJECTIVE

We sought to investigate the dose-response efficacy and speed of onset of pain relief of a fast-dissolving APAP formulation compared with lower doses of APAP and placebo in dental patients after impacted third molar extraction.

METHODS

Two single-center, single-dose, randomized, placebo-controlled, double-blind, double-dummy, parallel-group studies (Study I and Study II) were conducted to evaluate the efficacy and speed of onset of pain relief of different doses of a fast-dissolving APAP tablet (FD-APAP), standard APAP, and placebo in patients with postsurgical dental pain following third molar extraction. In Study I, a single dose of FD-APAP 1000 mg, FD-APAP 500 mg, or placebo was given to 300 patients; in Study II, a single dose of FD-APAP 1000 mg, standard APAP 650 mg, or placebo was given to 401 patients. All 701 patients from both studies were included in the analysis and safety assessment.

RESULTS

FD-APAP 1000 mg demonstrated significantly greater effect compared with FD-APAP 500 mg, APAP 650 mg, and placebo for all efficacy measurements, including sum of pain relief and pain intensity difference, total pain relief, sum of pain intensity difference, pain intensity difference, and pain relief score during 6 hours after the dose. Onset of confirmed first perceptible relief in subjects treated with FD-APAP 1000 mg was 15 minutes, which was 32% and 25% significantly shorter than onset of pain relief of FD-APAP 500 mg (22 minutes) and standard APAP 650 mg (20 minutes), respectively. FD-APAP 500 mg and APAP 650 mg demonstrated efficacy over placebo for most of the measurements; however, their effects were significantly lower and lasted for a shorter period of time than for FD-APAP 1000 mg. All study treatments were well tolerated.

CONCLUSIONS

FD-APAP 1000 mg tablets demonstrated efficacy over placebo. Also, FD-APAP 1000 mg had significantly superior effect, faster onset, and longer duration of pain relief compared with FD-APAP 500 mg and APAP 650 mg tablets.

Synaptic structure and function in the mouse somatosensory cortex during chronic pain: in vivo two-photon imaging

Recent advances in two-photon microscopy and fluorescence labeling techniques have enabled us to directly see the structural and functional changes in neurons and glia, and even at synapses, in the brain of living animals. Long-term in vivo two-photon imaging studies have shown that some postsynaptic dendritic spines in the adult cortex are rapidly eliminated or newly generated, in response to altered sensory input or synaptic activity, resulting in experience/activity-dependent rewiring of neuronal circuits. In vivo Ca²⁺ imaging studies have revealed the distinct, input-specific response patterns of excitatory neurons in the brain. These updated in vivo approaches are just beginning to be used for the study of pathophysiological mechanisms of chronic diseases. In this paper, we introduce recent in vivo two-photon imaging studies demonstrating how plastic changes in synaptic structure and function of the mouse somatosensory cortex, following peripheral injury, contribute to chronic pain conditions, like neuropathic and inflammatory pain.

Comparison of perioperative oral multimodal analgesia versus IV PCA for spine surgery

STUDY DESIGN

A preintervention and postintervention design was used to examine a total of 200 patients.

OBJECTIVE

After successful implementation at our institution of a perioperative oral multimodal analgesia protocol in major joint arthroplasty, a modified regimen was provided to patients undergoing spine procedures.

SUMMARY OF BACKGROUND DATA

A proactive, multimodal approach is currently recommended for the management of acute postoperative pain. Inadequate postoperative analgesia can negatively influence surgical outcome and duration of rehabilitation. Routine use of intravenous patient controlled analgesia (IV PCA) after surgery can result in substantial functional interference, side effects, and lead to untoward events as a result of programming errors.

METHODS

A preintervention and postintervention design was used to compare a historical control group of spine surgery patients who received conventional IV PCA (N=100) with a prospective group who received some form of perioperative oral multimodal analgesia (N=100). The new regimen included preoperative and postoperative scheduled extended-release oxycodone, gabapentin, and acetaminophen, intraoperative dolasetron and as-needed postoperative short-acting oral oxycodone. Patient surveys and chart audits were used to measure pain intensity, functional interference from pain, opioid consumption, analgesic-related side effects, and patient satisfaction over the first 24 hours postoperatively.

RESULTS

Patients who received the new perioperative multimodal oral regimen had significantly less opioid consumption (P<0.001), lower ratings of Least Pain (P<0.01), and experienced less nausea (P<.001), drowsiness (P<0.05), interference with walking (P=0.05), and coughing and deep breathing (P<0.05) compared with the IV PCA group.

CONCLUSIONS

This quality improvement study shows some safety and significant advantages of a multimodal perioperative oral analgesic regimen compared with standard IV PCA after spine surgery.

Patient perception of pain care in hospitals in the United States

STUDY OBJECTIVE

Assessment of patients' perception of pain control in hospitals in the United States.

BACKGROUND

Limited data are available regarding the quality of pain care in the hospitalized patient. This is particularly valid for data that allow for comparison of pain outcomes from one hospital to another. Such data are critical for numerous reasons, including allowing patients and policy-makers to make data-driven decisions, and to guide hospitals in their efforts to improve pain care. The Hospital Quality Alliance was recently created by federal policy makers and private organizations in conjunction with the Centers for Medicare and Medicare Services to conduct patient surveys to evaluate their experience including pain control during their hospitalization.

METHODS

In March 2008, the results of the Hospital Consumer Assessment of Healthcare Providers and Systems (HCAHPS) survey was released for review for health care providers and researchers. This survey includes a battery of questions for patients upon discharge from the hospital including pain-related questions and patient satisfaction that provide valuable data regarding pain care nationwide. This study will review the results from the pain questions from this available data set and evaluate the performance of these hospitals in pain care in relationship to patient satisfaction. Furthermore, this analysis will be providing valuable information on how hospital size, geographic location and practice setting may play a role in pain care in US hospitals.

RESULTS

The data indicates that 63% of patients gave a high rating of global satisfaction for their care, and that an additional 26% of patients felt that they had a moderate level of global satisfaction with the global quality of their care. When correlated to satisfaction with pain control, the relationship with global satisfaction and "always" receiving good pain control was highly correlated (r >0.84). In respect to the other HCAHPS components, we found that the patient and health care staff relationship with the patient is also highly correlated with pain relief (r >0.85). The patients' reported level of pain relief was significantly different based upon hospital ownership, with government owned hospitals receiving the highest pain relief, followed by nonprofit hospitals, and lastly proprietary hospitals. Hospital care acuity also had an impact on the patient's perception of their pain care; patients cared for in acute care hospitals had lower levels of satisfaction than critical access hospitals.

CONCLUSIONS

The results of this study are a representation of the experiences of patients in US hospitals with regard to pain care specifically and the need for improved methods of treating and evaluating pain care. This study provides the evidence needed for hospitals to make pain care a priority in to achieve patient satisfaction throughout the duration of their hospitalization. Furthermore, future research should be developed to make strategies for institutions and policy-makers to improve and optimize patient satisfaction with pain care.

Prospective analysis of a novel long-acting oral opioid analgesic regimen for pain control after total hip and knee arthroplasty

Parenteral opioid use after total knee (TKA) and hip (THA) arthroplasty often results in substantial functional interference and side effects. This prospective study compared use of traditional intravenous patient-controlled analgesia (IV PCA) with a novel oral regimen after TKA and THA. Sixty-two patients received IV PCA and 62 received scheduled long-acting and, as needed, short-acting oral opioids postoperatively. Surveys and chart audits documented functional interference, pain scores, opioid-related side effects, and opioid consumption. Patients who received the oral regimen had significantly less opioid consumption (P < .05) and experienced less functional interference (P < .05) than the IV PCA group. Both groups had similar pain scores and incidence of opioid side effects. This study demonstrates some significant advantages of an oral analgesic regimen compared with IV PCA after TKA and THA.

No Brain, No Gain: The Role of Cognitive Processes in Irritable Bowel Syndrome

This article seeks to summarize research supporting the influence of psychological factors in general and cognitive factors in shaping the onset, expression, and outcome of irritable bowel syndrome (IBS). To this end, 6 lines of research are reviewed, with a focus on studies showing (a) the lack of correspondence between IBS symptoms and measured gut motility; (b) IBS patients as a group tend to label visceral sensations negatively and show a lower tolerance for visceral sensations; (c) neuroimaging studies showing abnormalities in central pain processing mechanisms in response to rectal stimuli among IBS vs. healthy controls; (d) high rates of psychiatric comorbidity among treatment seeking IBS patients, particularly of psychiatric disorders marked by cognitive dysfunction (e.g., depression, Generalized Anxiety Disorder); (e) the effects of cognitive factors on IBS and its outcome; and (f) frequency of comorbid functional somatic symptoms whose pathophysiology involves central processing abnormalities (e.g., fibromyalgia, headache). These data provide a strong conceptual foundation for formulating and treating IBS from a cognitive therapy orientation.

Pain management in the intensive care unit

Pain management is an essential component of quality care delivery for the critically ill patient. Because outcomes are difficult to predict in the intensive care unit (ICU), high-quality pain management and palliative therapy should be a goal for every patient. For those patients actively dying, palliation may be among the main benefits offered by the health care team. Appropriate palliation of pain begins with the use of effective strategies for recognizing, evaluating,and monitoring pain. Skill in pain management requires knowledge of both pharmacologic and nonpharmacologic therapies. This article focuses on expertise in the use of opiates to facilitate confident and appropriate pain therapy. To optimize palliative therapy, symptoms are best addressed by interdisciplinary care teams guided by models that acknowledge a continuum of curative therapies and palliative care.

Preoperative Interscalene Block for Elective Shoulder Surgery: Loss of Benefit over Early Postoperative Block After Patient Discharge to Home

We performed a randomized, prospective, parallel-group, open-label, multicenter trial to compare the effects of pre- versus postoperative interscalene block using levobupivacaine on postoperative pain and analgesic requirements. One-hundred-two outpatients scheduled for elective shoulder surgery were randomized to receive 30 mL of 0.5% levobupivacaine either preoperatively (PRE group) or postoperatively (POST group). Analgesic outcome measures during the postoperative period were: (a). time to first request for analgesic medication after surgery, (b). pain intensity using the visual analog scale at rest and during arm movement, and (c). total analgesic consumption of nonsteroidal antiinflammatory drugs and opioids. The time to first analgesic request did not differ between treatment groups. However, mean maximum pain intensity scores during the day of surgery were significantly less for the PRE group than the POST group, both at rest (P = 0.001) and after movement (P = 0.004). The mean opioid administered during surgery was lower in the PRE than the POST group (P < 0.001). Levobupivacaine was well tolerated in both treatment groups, and no adverse reactions were related to this local anesthetic. In conclusion, preoperative interscalene block with levobupivacaine provided superior pain control for the first 12 h after surgery, but this benefit was not maintained during the week after discharge because the subjects assumed control of their own pain relief as outpatients.

IMPLICATIONS

Preoperative interscalene block with levobupivacaine provides safe and effective analgesia for same-day elective shoulder surgery, but the benefit of this one-time intervention does not persist.

Psychological aspects of traumatic injury in children and adolescents

Each year millions of children are exposed to some form of extreme traumatic stressor. These traumatic events include natural disasters (e.g., tornadoes, floods, hurricanes), motor vehicle accidents, life-threatening illnesses and associated painful medical procedures (e.g., severe burns, cancer, limb amputations), physical abuse, sexual assault, witnessing domestic or community violence, kidnapping, and sudden death of a parent. During times of war, violent and nonviolent trauma (e.g., lack of fuel and food) may have terrible effects on children's adjustment. The events of September 11, 2001 and the unceasing suicidal attacks in the Middle East underscore the importance of understanding how children and adolescents react to disasters and terrorism. The body of literature related to children and their responses to disasters and trauma is growing. Mental health professionals are increasing their understanding about what factors are associated with increased risk (vulnerability) and affect how children cope with traumatic events. Researchers recognize that children's responses to major stress are similar to adults' (reexperiencing the event, avoidance, and arousal) and that these responses are not transient. A review of the literature indicates that PTSD is the most common psychiatric disorder after traumatic experiences, including physical injuries. There is also evidence for other comorbid conditions, including mood, anxiety, sleep, conduct, learning, and attention problems. In terms of providing treatment, CBT emerges as the best validated therapeutic approach for children and adolescents who experienced trauma-related symptoms, particularly symptoms associated with anxiety or mood disorders. The best approach to the injured child requires injury and pain assessment followed by specific interventions, such as pain management, brief consultation, and crisis intervention immediately after the specific traumatic event. Family support also may be necessary to help the family through this difficult period. The main conclusion that arises from the research on resilience in development is that extraordinary resilience and recovery power of children depend on basic human protective systems operating in their favor. This finding has produced a fundamental change in the framework for understanding and helping children at high risk or already in trouble. This shift is evident in a changing conceptualization of the goals of prevention and intervention that currently address competence and problems. Strategies for fostering resilience described in this article should be tested in future controlled psychotherapy trials to verify their efficacy on children's protective factors.

A comparison of multimodal perioperative analgesia to epidural pain management after gastric bypass surgery

We compared pain intensity, analgesic consumption, patient satisfaction, and length of stay in 114 patients undergoing gastric bypass surgery under general anesthesia. Patients were randomized to incisional local anesthetic infiltration plus postoperative patient-controlled analgesia (Group A), epidural anesthesia and analgesia (Group B), or postoperative patient-controlled analgesia (Group C). All received perioperative nonsteroidal antiinflammatory drugs. Age, sex, body mass index, length of stay, and patient satisfaction were equivalent in all groups. Pain at time 0 and 36 h was the smallest in Group B, greater in Group A, and greatest in Group C. Pain scores in a subset of Group A were lower at all times than in Groups B and C, but this difference was significant only at 0, 12, and 36 h. In responders, infiltration analgesia as part of a multimodal regimen offers a simple, safe, and inexpensive alternative to epidural pain control.

Prevention and treatment of progressive multiple organ disfunction in acute pancreatitis

Acute pancreatitis is illness with unpredictable outcome. In some patients course of illness is progressive and leading to multiple organ dysfunction syndrome often resulting with lethal outcome. During last decade the treatment protocols have changed. Basic patophysiologic mechanisms leading to progression of the illness, as well as, contemporary diagnostic and treatment possibilities that can prevent occurrence of severe consequences and improve outcome are presented.

The efficacy of combination analgesic therapy in relieving dental pain

BACKGROUND

An experience of poorly managed pain related to dental treatment can lead patients to avoid or postpone treatment. The development of new pain management strategies equips dental clinicians with additional treatment options that can provide more effective pain relief

LITERATURE REVIEWED

The author reviewed dental and medical literature dealing with the safety, efficacy and mechanisms of action of common analgesic treatments.

CONCLUSIONS

For the treatment of mild to moderate pain, acetaminophen and non-steroidal anti-inflammatory drugs, or NSAIDs, continue to be the most appropriate options. The use of cyclo-oxygenase2-inhibitor NSAIDs should be strongly considered for use with patients at risk of experiencing gastrointestinal toxicity. The pathophysiology of pain is a complex central and peripheral nervous system process, and the use of combination analgesics that act at multiple pain sites can improve pain relief after a dental procedure. For moderate to moderately severe pain, tramadol or combination medications such as tramadol with acetaminophen or codeine with acetaminophen are appropriate. For severe pain, use of opioids or opioid combinations is advised.

CLINICAL IMPLICATIONS

Providing appropriate treatment after dental surgery requires a careful medical history and an educated anticipation of the level of pain the patient may encounter. New analgesic options are available and should be considered, particularly combination analgesics, which can provide faster onset and prolonged duration of action and can combat pain at multiple sites of action.

Treatment of pain in acutely burned children

The child with burns suffers severe pain at the time of the burn and during subsequent treatment and rehabilitation. Pain has adverse physiological and emotional effects, and research suggests that pain management is an important factor in better outcomes. There is increasing understanding of the private experience of pain, and how children benefit from honest preparation for procedures. Developmentally appropriate and culturally sensitive pain assessment, pain relief, and reevaluation have improved, becoming essential in treatment. Pharmacological treatment is primary, strengthened by new concepts from neurobiology, clinical science, and the introduction of more effective drugs with fewer adverse side effects and less toxicity. Empirical evaluation of various hypnotic, cognitive, behavioral, and sensory treatment methods is advancing. Multidisciplinary assessment helps to integrate psychological and pharmacological pain-relieving interventions to reduce emotional and mental stress, and family stress as well. Optimal care encourages burn teams to integrate pain guidelines into protocols and critical pathways for improved care.

Pediatric anesthesia in dermatologic surgery: when hand-holding is not enough

BACKGROUND

Dermatologic procedures in children may require the use of topical and local anesthetics, sedatives, and general anesthesia.

OBJECTIVE

To review developments in topical and local anesthetics, sedatives, and general anesthesia relevant to dermatologic procedures in children.

METHODS

Review of the medical literature.

RESULTS

Topical anesthetics, including EMLA and liposome-encapsulated lidocaine cream, amethocaine, cetacaine, and benzocaine products may be useful for decreasing the pain of cutaneous procedures including intra-lesional lidocaine infiltration. A variety of sedative and hypnotic agents may be utilized for pediatric dermatology procedures, and guidelines for their appropriate use have been published. General anesthesia for dermatologic procedures in the pediatric population is appropriate for a variety of procedures including laser treatment of capillary malformations.

CONCLUSION

A variety of anesthetic, analgesic, and sedatives may be useful for pediatric cutaneous surgery.

Ten-year research review of physical injuries

OBJECTIVE

To review the past 10 years of research relevant to psychiatry on injuries in children and adolescents.

METHOD

A literature search of databases for "wounds and injuries, excluding head injuries," was done with Medline and PsycINFO, yielding 589 and 299 citations, respectively. Further searching identified additional studies.

RESULTS

Progress is occurring in prevention, pain management, acute care, psychiatric treatment, and outcomes. The emotional and behavioral effects of injuries contribute to morbidity and mortality. Psychiatric assessment, crisis intervention, psychotherapy, psychopharmacological treatment, and interventions for families are now priorities. Research offers new interventions for pain, delirium, posttraumatic stress disorder, depression, prior maltreatment, substance abuse, disruptive behavior, and end-of-life care. High-risk subgroups are infants, adolescents, maltreated children, suicide attempters, and substance abusers. Staff training improves quality of care and reduces staff stress.

CONCLUSIONS

Despite the high priority that injuries receive in pediatric research and treatment, psychiatric aspects are neglected. There is a need for assessment and for planning of psychotherapeutic, psychopharmacological, and multimodal treatments, based on severity of injury, comorbid psychopathology, bodily location(s), and prognosis. Psychiatric collaboration with emergency, trauma, and rehabilitation teams enhances medical care. Research should focus on alleviating pain, early psychiatric case identification, and treatment of children, adolescents, and their families, to prevent further injuries and reduce disability.

Analgesic agents. Pharmacology and application in critical care

Evaluation of analgesic agents is multifactorial. The authors know of no direct comparisons among the choices in analgesic agents that suggest one therapy over another in global outcomes such as mortality or morbidity. Therefore, until further outcome differentiation between agents is proved, understanding the primary difference of delivery routes, mechanisms of action, pharmacokinetics, and adverse effects serves as the best guide for selecting the appropriate agent for each patient.

Timing of pre-emptive tenoxicam is important for postoperative analgesia

PURPOSE

In this prospective randomized study, a comparison was made between the efficacy of 20 mg tenoxicam, administered either, 30 min preoperatively or at induction of anesthesia, for the relief of postoperative pain in patients undergoing ambulatory breast biopsy.

METHODS

Seventy-three patients were recruited and all received a standard anesthetic consisting of induction with 2 mg x kg(-1) propofol followed by 5 microg x kg(-1) alfentanyl. No premedication was administered and at the end of the procedure the wounds were infiltrated with 10 ml of bupivacaine (0.5%). Patients were randomized to receive 20 mg tenoxicam intraveneously either 30 min before surgery or at induction of anesthesia.

RESULTS

Demographic criteria were similar in both groups. There were differences in pain scores at 30, 60, 120 and 240 min postoperatively (VAS at 30 min 3.2 +/- 1.2 vs 5.5 +/- 1.8; P < 0.001: VAS at 60 min 1.8 +/- 1.2 vs 3.7 +/- 1.9; P < 0.001: VAS at 120 min 0.9 +/- 0.9 vs 1.7 +/- 1.0; P = 0.003: VAS at 240 min 0.5 +/- 0.5 vs 1.1 +/- 0.8; P < 0.001: Expressed as mean +/- SD). There was a difference in the number of patients requiring additional analgesia, in the first four hours postoperatively (12 (33%) vs 27 (73%); P = 0.001) and a difference in the time to additional analgesia in these patients (87.5 +/- 32.5 vs 55.0 +/- 26.8 min; P = 0.002).

CONCLUSION

Early administration of pre-emptive tenoxicam 30 min before induction of anesthesia improves postoperative analgesia in patients undergoing ambulatory breast biopsy.

A quality improvement approach to reducing use of meperidine

BACKGROUND

In 1991 the University of Wisconsin Hospital and Clinics formed a pain management QI team whose goal was to improve pain management through education, outcome monitoring, and the development of programs intended to improve clinical practice. Longitudinal monitoring mechanisms were established to audit medical records and survey patients to examine both staff practice patterns and patient outcomes. The QI team targeted use of meperidine, one of the most widely used opioid analgesics for the treatment of moderate to severe pain, which is now discouraged as a first-line agent for most painful conditions.

IMPLEMENTING THE QI PROCESS

A QI process was implemented using a traditional plan-do-check-act (PDCA) model, resulting in a successful and sustained reduction of inappropriate meperidine use. A cause-and-effect diagram helped highlight the multiple factors contributing to the drug's overuse and was used to prioritize targets for action. A flow chart helped to uncover some of the interrelationships between the myths about meperidine and the resultant customary prescribing and administration practices. While most of the strategies were implemented in 1996 (formulary guideline release, change in stock supply and physician orders, staff education and feedback), a significant impact in practice was not seen until late 1997. Ongoing tracking and feedback loops were established to ensure continued low use of meperidine.

CONCLUSION

Use of a QI approach in pain management has been shown to affect the visibility of pain as a clinical priority, enhance interdisciplinary collaboration, facilitate the implementation of clinical guidelines at the bedside, and improve the quality of care for patients.

The new JCAHO pain standards: implications for pain management nurses

The newly approved Joint Commission on Accreditation of Healthcare Organizations (JCAHO) pain management standards present an important opportunity for widespread and sustainable improvement in pain assessment and management. Unrelieved pain is a major, yet avoidable, public health problem. Despite 20 years of work by educators, clinicians, and professional organizations and the publication of clinical practice guidelines, there have been, at best, modest improvements in pain management practices. Multiple barriers found in the health care system, and among health care professionals, patients, and families, continue to impede progress. In August 1997 a collaborative project was initiated to integrate pain assessment and management into the standards, intent statements, and examples of implementation of JCAHO--a rare opportunity to improve pain management in health care facilities throughout the country. After review by multiple JCAHO committees and advisory groups and critique by an expert panel, the JCAHO Board of Commissioners approved the revisions in May 1999. The revisions are published in the 2000-2001 standards manuals and will be effective January 1, 2001, for all patient care organizations accredited by JCAHO--ambulatory care, behavioral health, health care networks, home care, hospitals, long-term care, and long-term care pharmacies. An evaluation of the impact of the revisions is currently being completed, and education of the JCAHO surveyors and health care professionals is underway. Nurses, especially those with expertise in pain management, are valuable resources as health care organizations change their pain assessment and management processes to meet the new standards.

Toward a canon of the pain and analgesia literature: a citation analysis

The purpose of this study was to use citation analysis to identify major themes and contributors to the pain and analgesia literature over the past two decades. A citation analysis was performed on a database of more than 110,000 articles in the biomedical literature from January 1981 through June 1997, and in the interval from January 1988 through June 1997. Articles and authors related to pain and analgesia research and practice were identified by searching approximately 7,700 journals. The 20 articles and 20 authors with the most citations were then checked by hand to ensure relevance to pain or analgesia. Most of the high-impact articles identified pertained to research on basic pain pathways. Nearly all the articles concerned opioids, nonsteroidal antiinflammatory drugs, and consequences of analgesic use. None of the highest-impact articles address assessment of clinical pain. Few women were first authors of any most frequently cited paper. Citation analysis is a useful tool in identifying important contributions to the biomedical literature. Recent and continuing research trends include the use of nonsteroidal antiinflammatory drugs, opioid mechanisms, and persistent pain disorders. Current trends expected to become stronger include description of pain from the patient's perspective and mechanisms of the transition from acute to chronic pain.

IMPLICATIONS

We performed a citation analysis to identify important contributions and contributors to the biomedical literature. Recent pain and analgesia research has been focused on mechanisms of pain, but evidence suggests the importance of understanding the pain experience from the patient's perspective and the transition from acute to chronic pain.

Acute pain

Postanaesthesia care units used to echo with cries of patients in pain after general anaesthesia. Each as-needed dose of analgesia was given only after permission of the surgeon or anaesthesiologist. Once conscious, patients were required to request each subsequent analgesic dose until hospital discharge. Not surprisingly, nearly half the patients who have an operation experience moderate to severe pain after surgery. Acute pain control has advanced dramatically and is now a field with dedicated texts, journals, and research. Despite improved surgical techniques that have transformed many operations into same-day procedures, inadequately controlled pain may still extend the length of hospital stay and predispose to expensive, time-consuming complications such as pneumonia. Recognition of economic and humanitarian benefits of pain control has prompted worldwide attention from professional groups, insurers, and governments. This paper describes the process of acute pain and measures to control it with drugs or non-pharmacological interventions. Even brief intervals of acute pain can induce long-term neuronal remodelling and sensitisation ("plasticity"), chronic pain, and lasting psychologial distress. Hence, acute pain and other types of pain (cancer-related or chronic) that are classified as distinct actually have many similarities.