Agreement between Patient-reported Pain Medication Use and Electronic Medical Record Data in Surgical Amputation Patients.

Background: Opioid misuse after surgery remains a public health crisis in the United States. Recent efforts have focused on tracking pain medication use in surgical populations. However, accurate interpretations of medication use remain quite challenging given inconsistent usage of different datasets. The purpose of this study was to investigate the agreement between electronic medical records (EMR) versus patient self-reported use of pain medications in a surgical amputation population. Methods: Patients undergoing major lower extremity amputation or amputation-related procedures were included in this study. Both self-reported and EMR data for pain medication intake were obtained for each patient at three time points (preoperatively, 4 months postoperatively, and 12 months postoperatively). Percentage agreement and the kappa statistic were calculated for both usage (yes/no) and dose categories. Results: Forty-five patients were included in this study, resulting in 108 pairs of self-reported and EMR datasets. Substantial levels of agreement (>70% agreement, kappa >0.61) for opioid use was seen at preoperative and 12 months postoperative. However, agreement dropped at 4 months postoperatively. Anticonvulsant medication showed high levels, whereas acetaminophen showed lower levels of agreements at all time points. Conclusions: Either self-reported or EMR data may be used in research and clinical settings for preoperative or 12-month postoperative patients with little concern for discrepancies. However, at time points immediately following the expected end of acute surgical pain, self-reported data may be needed for more accurate medication reporting. With these findings in mind, usage of datasets should be driven by study objectives and the dataset's strength (eg, accuracy, ease, lack of bias).

Chronic postsurgical pain following breast reconstruction: a commentary and critique.

In line with other major surgeries including breast cancer surgery (BCS), recent studies suggest a striking rate of chronic postsurgical pain (CPSP) following breast reconstruction. This commentary will critically examine evidence for the degree to which the prevalence of CPSP following breast reconstruction is directly attributable to reconstructive surgery. The discussion will trace similarities and distinctions between breast reconstruction and BCS in considering the risk for CPSP, and describe recent advances in the definition of CPSP, highlighting methodological limitations in the general investigation of CPSP, which also characterize the study of CPSP more specifically for breast reconstruction outcome. A convenience sample of relevant studies examining CPSP following breast reconstruction reveals inadequate evidence to support a serious concern for reconstruction-induced CPSP and further that these studies fail to adhere to recommended methodological standards to effectively isolate surgery as the etiology of persistent pain reported by women following reconstructive surgery. Suggestions for future exploration of problematic chronic pain after breast reconstruction are considered.

Is chronic postsurgical pain surgery-induced? A study of persistent postoperative pain following breast reconstruction.

BACKGROUND: Chronic postsurgical pain (CPSP) is a reported risk for women undergoing breast reconstruction, but it remains unclear that such persistent pain is induced by reconstructive surgery. To address this concern, this prospective cohort study examined the prevalence of and risk factors associated with CPSP among women undergoing breast reconstruction. MATERIALS AND METHODS: Women (n = 1996) recruited for the Mastectomy Reconstruction Outcomes Consortium (MROC) Study were assessed preoperatively and at two-years postoperatively for relevant medical/.surgical variables, pain experience, body physical well-being, anxiety, depression, and reconstruction procedure type and characteristics. RESULTS: Nearly half of the entire sample reported some level of preoperative pain. At two years there were statistically significant but not clinically meaningful increases in both pain intensity and chest/upper body discomfort but a decrease in affective pain rating. Average clinical pain severity was strikingly similar for preoperative and postoperative assessments. Preoperative levels of pain, acute postoperative pain, and (marginally) level of depression held consistent relationship at two-year follow-up with all outcome measures. Autologous flap reconstruction was associated with more severe CPSP compared to TE/I reconstruction. Older age, higher BMI, bilateral reconstruction, and adjuvant radiation and chemotherapy were associated with CPSP and chest/upper body discomfort for at least one outcome measure at two years. CONCLUSIONS: The substantial rate of preoperative pain and comparable prevalence of preoperative and postoperative pain ratings suggest that persistent pain after breast reconstruction may not necessarily reflect surgery-induced pain. Future research will need to determine those factors that contribute to long-term pain following breast reconstruction.

Factors Associated with Acute Postoperative Pain Following Breast Reconstruction.

INTRODUCTION: Post-mastectomy breast reconstruction has become an increasingly important component of breast cancer treatment. Unfortunately, some patients experience severe postoperative pain, placing them at risk for increased clinical morbidity and the development of disabling chronic pain. In an attempt to identify at-risk patients, we prospectively evaluated patient characteristics and medical/surgical variables associated with more severe acute post-reconstruction pain. METHODS: Women (N = 2207; one-week 82.8% response rate) undergoing breast reconstruction were assessed for pain experience, anxiety, depression, and sociodemographic characteristics prior to surgery. Pain assessments were made preoperatively and postoperative at 1-week using validated survey instruments including the McGill Pain Questionnaire-Short Form (MPQ-SF), Numerical Pain Rating Scale (NPRS), and BREAST-Q Chest and Upper Body scale. Depressive symptoms and anxiety severity were assessed by the Patient Health Questionnaire and Generalized Anxiety Disorders Scale, respectively. Mixed-effects regression modeling was used to examine the relationships between patient characteristics and medical/surgical factors and 1-week postoperative pain. RESULTS: Younger age, bilateral reconstruction, and severity of preoperative pain, anxiety and depression were all associated with more severe acute postoperative pain on all the pain measures and BREAST-Q. Comparison of surgical procedure type indicated less severe postoperative pain for PTRAM, DIEP and SIEA reconstructive surgery compared to tissue expander/implant reconstruction. CONCLUSIONS: This study identified patients at risk for greater acute postoperative pain following breast reconstruction. These findings will allow plastic surgeons to better tailor postoperative care to improve patient comfort, reduce clinical morbidity, and further enhance patient satisfaction with their surgical outcome.

History of abuse and its relationship to pain experience and depression in women with chronic pelvic pain.

OBJECTIVE: We sought to determine the relationship among a history of physical or sexual abuse, pain experience, and depressive symptoms among women with chronic pelvic pain (CPP). STUDY DESIGN: This was a cross-sectional study of women who presented to a tertiary referral center for evaluation of CPP (N = 273). All participants completed standardized questionnaires to assess a history of physical or sexual abuse, pain severity, pain disability, and depressive symptoms. Subjects were grouped by abuse category and compared to CPP participants without history of abuse. Multinomial logistic regression models were used to determine the association between adolescent or adult and childhood physical or sexual abuse with pain intensity, pain-related disability, and depressive symptoms. RESULTS: Logistic regression analyses indicated that, after controlling for age and education, none of the abuse categories was associated with pain severity. However, adolescent or adult sexual abuse predicted greater pain-related disability (odds ratio, 2.39; 95% confidence interval, 1.05-5.40), while both adolescent or adult physical and sexual abuse were associated with higher levels of depression (both P < .05). Level of education was significantly associated with pain intensity, pain disability, and depression. CONCLUSION: For our sample of women with CPP, a history of abuse during childhood or adulthood was not associated with differences in pain intensity, but adolescent or adult sexual abuse was associated with greater pain-related disability. A history of physical abuse or sexual abuse appears to hold a stronger relationship with current depressive symptoms than pain experience for women with CPP. Educational achievement holds a robust relationship with pain morbidity and depression for this population.

A history of chronic opioid usage prior to kidney transplantation may be associated with increased mortality risk.

Chronic opioid usage (COU) for analgesia is common among patients with end-stage renal disease. In order to test whether a prior history of COU negatively affects post-kidney transplant outcomes, we retrospectively examined clinical outcomes in adult kidney transplant patients. Among 1064 adult kidney transplant patients, 452 (42.5%) reported the presence of various body pains and 108 (10.2%) reported a prior history of COU. While the overall death or kidney graft loss was not statistically different between patients with and without a history of COU, the cumulative mortality rate at 1, 3, and 5 years after transplantation, and during the entire study period, appeared significantly higher for patients with than without a history of COU (6.5, 18.5, and 20.4 vs. 3.2, 7.5, and 12.7%, respectively). Multivariate Cox regression analysis adjusted for potential confounding factors in entire cohorts and Cox regression analysis in 1:3 propensity-score matched cohorts suggest that a positive history of COU was significantly associated with nearly a 1.6- to 2-fold increase in the risk of death (hazard ratio 1.65, 95% confidence interval 1.04-2.60, and hazard ratio 1.92, 95% confidence interval 1.08-3.42, respectively). Thus, a history of chronic opioid usage prior to transplantation appears to be associated with increased mortality risk. Additional studies are warranted to confirm the observed association and to understand the mechanisms.

Interventional pain medicine: retreat from the biopsychosocial model of pain.

The field of pain medicine has shifted from multidisciplinary rehabilitation to procedure-focused interventional pain medicine (IPM). Considerable controversy exists regarding the efficacy of IPM and its more narrow focus on nociception as an exclusive target of pain treatment. This topical review aims to examine pain research and treatment outcome studies that support a biopsychosocial model of pain, and to critique the clinical practice of IPM given its departure from the premises of a biopsychosocial model. A modern definition of pain and findings from clinical and basic science studies indicate that pain-related psychological factors are integral to pain perception. The clinical viability of IPM is challenged based upon its biomedical view of peripheral nociception as a primary source of pain and the potential of this viewpoint to foster maladaptive pain attributions and discourage the use of pain coping strategies among chronic pain patients. IPM should adopt a biopsychosocial perspective on pain and operate within a framework of multidisciplinary pain rehabilitation to improve its effectiveness.

Psychological factors and chronic pelvic pain in women: a comparative study with women with chronic migraine headaches.

Chronic pelvic pain (CPP) is often attributed to psychogenic causation. To determine if women with CPP possess a unique psychological profile, this study examined the comparative pain experience, psychological functioning, and marital/sexual satisfaction of women with either CPP or chronic migraine headache (CH). Patients with CPP reported greater dissatisfaction with their marriage and greater sexual dysfunction. No differences were obtained for ratings of depression, anxiety, mood factors, or additional personality traits. These data suggest that, in general, when psychological disorders are observed in CPP patients, they most likely reflect the effects of chronic pain rather than be causative to it.

Patient beliefs about pain diagnosis in chronic pelvic pain: relation to pain experience, mood and disability.

OBJECTIVE: To examine the contribution of pain beliefs (fear regarding pain diagnosis) in understanding pain experience, mood, affective distress, marital interactions surrounding pain, and functional disability among women with chronic pelvic pain (CPP). STUDY DESIGN: One hundred forty-nine consecutive females with CPP presenting to a university hospital Chronic Pain Clinic completed self-report inventories assessing demographic status, pain-related morbidity, depressive symptoms and global affective distress. Pain beliefs were assessed by subject response to the question "Do you think your pain is due to something more serious or different from what doctors have told you?" and subjects were categorized into "Yes More Serious" (n = 77) and "Not More Serious" (n = 72) groups. RESULTS: Subjects who believed they had "something more serious" as a cause for their pain reported more severe pain intensity (p < 0.05) and pain experience (p < 0.05), greater suffering due to pain (p = 0.01), a less attentive spouse/family member when in pain (p < 0.05), more severe pain disability (p < 0.05), and greater affective distress (p < 0.001). CONCLUSION: These findings provide further evidence for the psychological distress and functional disability that may result when CPP patients possess concerns,fears and possible misattributions regarding the cause of their pelvic pain.

Psychological factors in chronic pelvic pain due to endometriosis: a comparative study.

BACKGROUND/AIMS: This study compared women suffering chronic pelvic pain (CPP) secondary to endometriosis (n = 30) with women experiencing CPP due to either myofascial abdominal/pelvic pain (n = 70) or pelvic adhesions (n = 38) to determine if there are specific psychological variables uniquely associated with endometriosis. METHODS: This is a cross-sectional study of 138 women drawn from a convenience sample of 192 consecutive women with CPP presenting for evaluation to a university hospital chronic pain clinic. Subjects were categorized into groups based on their CPP diagnosis. Each subject completed a battery of validated inventories assessing demographic status, pain experience and other pain-related symptoms, pain disability, frequency of depressive symptoms, level of affective distress, satisfaction with pain treatment and satisfaction with their marital relationship. RESULTS: No differences were obtained across the three groups for any of the outcome measures. Effect size computation supported the absence of clinical differences across the groups for these measures. CONCLUSION: These findings fail to support the presence of a unique psychological profile or disproportionate psychological disturbance for women with CPP due to endometriosis. These data illustrate the importance of considering control groups that include chronic pain when exploring psychological contributions to specific chronic pain conditions.

The relation of post-traumatic stress symptoms to depression and pain in patients with accident-related chronic pain.

UNLABELLED: Symptoms of post-traumatic stress disorder (PTSD) are a common comorbidity in patients with a history of accident-related chronic pain and depression. However, little is known regarding the influence of PTSD in contributing to the affective distress, pain experience, and disability associated with chronic pain in this population. This study used structural equation modeling to examine 3 models that assess these relations in a sample of chronic pain patients with accident-related pain. Subjects were assessed for pain experience, depressive symptoms, anxiety, PTSD symptoms, pain disability, and relevant demographic variables. Pearson correlations indicated that symptoms of depression were significantly related to more severe pain, disability, and PTSD symptoms. PTSD symptoms were significantly associated with higher disability. The model of best fit indicated that after controlling for the influence of anxiety on the dependent measures, PTSD symptoms have a direct influence on severity of depressive symptoms, whereas depressive symptoms have a direct influence on pain intensity and an indirect impact on pain intensity by way of their effect on disability. These data point to the importance of unresolved PTSD symptoms in contributing to the level of depression, pain, and disability exhibited by chronic pain patients and highlight the need to consider directed and primary treatment of PTSD in pain rehabilitation programs. PERSPECTIVE: This study highlights the impact of symptoms of PTSD on levels of depression, disability, and pain in patients with pain secondary to physical injury. Our results suggest that pain rehabilitation programs provide directed interventions for PTSD symptoms among this population to improve pain treatment outcomes.

Psychological factors predict patient satisfaction with postmastectomy breast reconstruction.

BACKGROUND: This prospective study examined the contribution of psychological factors to the prediction of patient satisfaction with postmastectomy breast reconstruction surgery. METHODS: Women presenting for breast reconstruction were administered presurgical psychological inventories. Measures of affective distress, depressive symptoms, anxiety, somatization, and somatic preoccupation were obtained from standardized inventories. At 1-year (n = 295) and 2-year (n = 205) follow-up, subjects completed ratings of their satisfaction with both the general and aesthetic results of surgery. RESULTS: After controlling for sociodemographic variables and both surgical procedure type and timing, multiple linear regression analyses indicated that at 1-year follow-up preoperative measures of affective distress, depression, somatization, and somatic anxiety predicted less general satisfaction with surgical outcome, while presurgical levels of affective distress, depression, anxiety, somatization, and somatic anxiety predicted decreased aesthetic satisfaction. At 2-year follow-up, only preoperative affective distress retained a significant association with lowered general satisfaction with reconstructive surgery. In addition, at 2-year reassessment, aesthetic quality of surgical outcome was inversely related to all the presurgical psychological variables. CONCLUSIONS: Affective distress and somatic preoccupation negatively influence patient satisfaction with both aesthetic and general outcomes associated with postmastectomy breast reconstruction. Presurgical psychological screening and counseling of selected women who are being considered for breast reconstruction may be advisable to enhance patient satisfaction with reconstructive surgery.

Persistent pain following postmastectomy breast reconstruction: long-term effects of type and timing of surgery.

This study prospectively examined the long-term effects of type (transverse rectus abdominis musculocutaneous [TRAM] versus implant) and timing (immediate versus delayed) of postmastectomy reconstructive surgery on patient reports of pain at multiple body sites. Women (n = 205) seeking immediate or delayed breast reconstruction, choosing either expander implant or autologous tissue transfer surgical procedures, provided ratings for the presence of bodily, breast, abdominal, and back pain and abdominal tightness prior to surgery and at 2-year follow-up. At baseline, nonwhite women were more likely to undergo delayed reconstruction (P < 0.05), and women seeking delayed reconstruction had less breast pain (P < 0.001) and more back pain (P < 0.01). Multiple regression analyses, controlling for ethnicity and baseline pain, indicated that women receiving TRAM flap surgery reported more problems with abdominal pain and tightness. There was a trend for implant subjects to report more frequent problems with breast pain. These results suggest the need for heightened awareness of potential long-term pain morbidity for women undergoing TRAM flap or implant breast reconstruction.

A meta-analytic review of surface electromyography among persons with low back pain and normal, healthy controls.

UNLABELLED: Significant differences in surface electromyography (SEMG) have been reported between persons with low back pain (LBP) and normal, healthy controls. This manuscript presents a systematic meta-analytic review of studies examining SEMG differences between these groups. Forty-four articles were identified using MEDLINE and a review of reference lists in articles. For static SEMG, the largest effect size was observed for SEMG while standing, with subjects having LBP demonstrating higher SEMG. The effect size for flexion/relaxation measures was found to be very high (d = -1.71). Studies examining SEMG during isometric exercise or muscle recovery following exercise produced inconsistent findings. Sensitivity and specificity of SEMG for dynamic SEMG measures averaged 88.8% and 81.3%. Most classification schemes were statistically determined and utilized a combination of measures. Only one published study prospectively validated a classification scheme. SEMG measures of flexion-relaxation appear to distinguish LBP subjects from controls with good accuracy, and the sensitivity and specificity of SEMG can be increased by using multiple measures. Further research is needed to determine the combination of measures that are cost-effective, reliable, valid and discriminate with a high degree of accuracy between healthy persons and those with LBP. PERSPECTIVE: SEMG is a simple and noninvasive measure of muscle activity. SEMG measures hold promise as an objective marker of LBP.

Quality of life and affective distress in women seeking immediate versus delayed breast reconstruction after mastectomy for breast cancer.

BACKGROUND: This study compared the presurgical psychosocial and functional status of 238 women seeking breast reconstruction, either at the time of their mastectomy (immediate) (n = 151) or after prior mastectomy (delayed) (n = 87). Delayed subjects were further categorized in groups of time-since-mastectomy to examine the effects of time on postmastectomy psychosocial adjustment. METHODS: Presurgical measures of quality of life, psychological distress, and somatic anxiety were obtained. RESULTS: The results revealed relative impairment of quality of life and psychosocial functioning for immediate compared with delayed subjects. Immediate subjects reported greater disturbance in general mental health functioning, more severe impairment in emotional well being related to their cancer diagnosis, and higher levels of anxiety. Immediate subjects also reported a trend toward greater disturbance in work and daily activities, more frequent interference in social activities, and less vitality. Similarly, it was noted that the immediate group reported greater impairment in physical and functional well being related to their cancer adjustment. On psychological assessment, immediate subjects were more likely to report higher levels of affective distress, depressive symptoms, and obsessive-compulsive traits. For the delayed group, no statistically significant differences in the dependent measures were obtained when comparing subjects at 1 year, 2 years, and more than 2 years after mastectomy. CONCLUSIONS: Women seeking immediate reconstruction at the time of mastectomy show a relatively higher incidence of psychosocial impairment and functional disability. Women who undergo mastectomy demonstrate early restoration of psychosocial health within the first year after surgery. Patient preoperative psychosocial distress may have important implications for clinical decision-making and surgical outcome for women seeking combined mastectomy and breast reconstruction.

Cognitive complaints are associated with depression, fatigue, female sex, and pain catastrophizing in patients with chronic pain.

OBJECTIVE: To examine the relation between demographic, pain-related, psychosocial, affective, and treatment factors and complaints of cognitive dysfunction among patients with chronic pain. DESIGN: Cross-sectional survey. SETTING: A university hospital outpatient multidisciplinary chronic pain program. PARTICIPANTS: Chronic pain patients (N=222; 135 women, 87 men) completed a battery of psychometric questionnaires as part of an initial evaluation on referral to the program. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Cognitive impairment was assessed with items from the Brief Symptom Inventory; measures of depressive symptoms, pain intensity, posttraumatic stress disorder (PTSD), and pain catastrophizing were obtained from the Beck Depression Inventory (negative affect, negative self, somatic/physical function), McGill Pain Questionnaire, Modified Posttraumatic Chronic Pain Test, and Coping Strategies Questionnaire, respectively; and measures of subjective sleep disturbance, fatigue, opiate use, compensation/litigation status, pain location, and relevant demographic data were obtained from an open-ended questionnaire. RESULTS: Correlational analysis indicated that female sex, pain intensity, PTSD symptoms, depressive symptoms, catastrophizing, pain location (neck), and fatigue were all positively related to cognitive complaints. Simultaneous regression analysis showed that all factors combined accounted for 52% of the variance in self-report of cognitive difficulties and that 6 variables had a significant unique contribution to the report of cognitive complaints in the following order of importance: depression-negative affect (beta=.28, P <.05), fatigue (beta=.17, P <.05), depression-somatic/physical function (beta=.16, P <.05), depression-negative self (beta=.14, P =.05), pain catastrophizing (beta=.12, P =.08), and female sex (beta=.12, P <.05). CONCLUSIONS: Complaints of cognitive impairment among chronic pain patients appear to be associated with multiple factors, with particular attention to depressive symptoms, fatigue, and catastrophizing. Our results also suggest that women with chronic pain are particularly vulnerable to cognitive dysfunction.