Pain and aberrant drug-related behaviors in medically ill patients with and without histories of substance abuse

OBJECTIVES: This study evaluated the prevalence and correlates of aberrant drug-taking behaviors in two populations: patients with HIV-related pain and a history of substance abuse (n = 73) and patients with cancer pain and no history of substance abuse (n = 100). METHODS: All patients completed a Drug-Taking Behaviors Interview, the Brief Symptom Inventory (BSI), Brief Pain Inventory (BPI), Memorial Symptom Assessment Scale (MSAS), and the Marlowe Crowne Social Desirability Scale (MCSDS). The Pain Management Index was calculated to assess the adequacy of opioid prescribing. RESULTS: The cancer sample comprised 38 men and 62 women, and the AIDS sample comprised 63 men and 10 women. Patients with AIDS-related pain had higher global distress on the MSAS (F1, 170 = 20.05, P < 0.001), greater pain-related interference in their daily functioning on the BPI (F1, 161 = 22.87, P < 0.001), and a lower percentage of relief from their current medications (F1, 156 = 76.14, P < 0.001). AIDS patients also reported more than twice as many examples of aberrant drug-related behaviors per patient (mean = 6.14, SD = 4.60) as the cancer patients (mean = 1.42, SD = 1.91). CONCLUSION: These data suggest that AIDS patients with histories of substance abuse receiving opioid therapy are more symptomatic, have more distress, experience more interference from residual pain, and engage in more problematic drug-related behaviors than patients with no history of drug abuse receiving opioids for cancer pain. Treatment of substance abusers with pain requires skills that complement best practices in opioid prescribing. Better approaches to the long-term treatment of these populations are needed.     

PS1-01: Alcohol and Drug Use Among Chronic Opioid Therapy Patients

Background/Aims Opioid misuse and abuse is a significant public health problem, and there is a need to better identify at-risk individuals. Study aims were to examine patient characteristics associated with alcohol and other drug (AOD) use and aberrant drug related behaviors in chronic opioid therapy (COT) patients. Methods We conducted a telephone survey of a random sample of 972 COT patients in an integrated health care delivery system in 2009. Measures included weekly alcohol use and any illicit drug use in the last three months, and a composite measure of alcohol-only use, drug-only use, both alcohol and drug use, and tobacco only use. We conducted weighted multivariate logistic regressions models of AOD use and of aberrant drug-related behavior. Results Fourteen percent were weekly alcohol users (134/972), 16% used illicit drugs (157/972), 9% (83/972) used both alcohol and drugs, 8% used only drugs (74/972), 34% (334/491) used only alcohol, and 50% (481/972) did not use any substances. Multivariate models indicated illicit drug use was associated with a higher likelihood for weekly alcohol use, while being female, a higher daily opioid dose, and greater pain severity was associate with a lower likelihood of weekly alcohol use. Tobacco use, weekly alcohol use, depression symptoms, being male, and middle age was associated with a higher likelihood of illicit drug use. For aberrant drug related behaviors, drug-only use and both alcohol and drug use (compared to no AOD use) were associated with a higher likelihood of receiving opioids from friends or family in the last year, as were postive depressive symptoms and younger age. Both AOD use and depression symptoms were associated with a higher likelihood of giving opioids to others, while a high daily dose was associated with a lower likelihood of giving opioids to others, compared to the lowest dosage. Polysubstance use gender, and depression were risk factors in this sample. Post hoc analyses of primary care utilization indicated that those with high dosage opioids were more likely to have a certain threshold of primary care visits in the last year, suggesting there is an opportunity to manage these high risk patients.     

Recommendations for Substance Abuse and Pain Control in Patients with Chronic Pain

Purpose of Review

In the present investigation, current literature on the relationship between substance abuse and pain is evaluated in order to improve clinical management and its implications on the increasingly challenging chronic pain and substance abuse epidemic. The relationship between substance abuse and chronic pain are evaluated, and this review provides recommendations on the management of this special patient population.

Recent Findings

Currently, there are limited guidelines for prescribing opioids and other analgesics in the chronic pain population. As this field of practice continues to evolve, it is essential for clinicians to serve as the gatekeepers to monitor for misuse and safety. Multiple studies have indicated that illicit drug use and opioid abuse affect over 9% of patients. Although there are numerous reasons for seeking illicit drugs and abusing them, it is essential that clinicians identify factors which place certain patients at high risk and accordingly, to screen these patients in order to optimize their management.

Summary

The high prevalence of patients with chronic pain who also screen positive for drug use emphasizes the importance and increasingly pressing need to evaluate and to manage chronic pain in this population.

     

A pilot survey of aberrant drug-taking attitudes and behaviors in samples of cancer and AIDS patients

The clinical assessment of drug-taking behaviors in medically ill patients with pain is complex and may be hindered by the lack of empirically derived information about such behaviors in particularly medically ill populations. To investigate issues surrounding the assessment of these behaviors, we piloted a questionnaire based on the observations of specialists in pain management and substance abuse. This preliminary questionnaire evaluated medication use, present and past drug abuse, patients' beliefs about the risk of addiction in the context of pain treatment, and aberrant drug-taking attitudes and behaviors. This instrument was piloted in a mixed group of cancer patients (N = 52) and a group of women with HIV/AIDS (N = 111). Reports of past drug use and abuse were more frequent than present reports in both groups. Current aberrant drug-related behaviors were seldom reported, but attitude items revealed that patients would consider engaging in aberrant behaviors, or would possibly excuse them in others, if pain or symptom management were inadequate. Aberrant behaviors and attitudes were endorsed more frequently by the women with HIV/AIDS than by the cancer patients. Patients greatly overestimated the risk of addiction in pain treatment. We discuss the significance of these findings and the need for cautious interpretation given the limitations of the methodology. This early experience suggests that both cancer and HIV/AIDS patients appear to respond in a forthcoming fashion to drug-taking behavior questions and describe attitudes and behaviors that may be highly relevant to the diagnosis and understanding management of substance use among patients with medical illness.     

Problems and concerns of patients receiving chronic opioid therapy for chronic non-cancer pain

The value of chronic opioid therapy (COT) for chronic non-cancer pain (CNCP) patients is determined by a balance of poorly understood benefits and harms. Traditionally, this balance has been framed as the potential for improved pain control versus risks of iatrogenic addiction, drug diversion, and aberrant drug-related behaviors. These potential harms are typically defined from the providers’ perspective. This paper seeks to clarify difficulties with the long-term use of opioids for CNCP from the patients’ perspective. We used the Prescribed Opioids Difficulties Scale (PODS) to assess current problems and concerns attributed to opioid use by 1144 adults receiving COT. Subjects were grouped into low (56.9%), medium (25.6%) and high (17.5%) PODS scorers. Among patients with high PODS scores, 64% were clinically depressed and 78% experienced high levels of pain-related interference with activities, compared to 28% depressed and 60% with high interference with activities among those with low PODS scores. High levels of opioid-related problems and concerns were not explained by differences in pain intensity or persistence. Patients with medium to high PODS scores were often concerned about their ability to control their use of opioid medications, but prior substance abuse diagnoses and receiving excess days supply of opioids were much less common in these patients than depression and pain-related interference with activities. These results suggest two types of potential harm from COT attributed by CNCP patients to opioids: psychosocial problems that are distinct from poor pain control and opioid control concerns that are distinct from opioid misuse or addiction.     

Management of chronic noncancer pain in the primary care setting

While opioids are regarded as the mainstay of chronic pain management, their use is controversial in the minds of many primary care physicians due to clinical concerns about dependence, abuse, and addiction and medicolegal concerns regarding state and federal regulatory authorities. For patients with moderate to moderately severe pain, the treatment of choice is a long-acting opioid or opioid combination drug product to provide sustained analgesia along with improvements in sleep quality, compliance, and possibly quality of life. Careful screening of patients being considered for long-term opioid therapy with validated questionnaires can identify patients who may have difficulties in managing opioids. These patients should not be denied access to opioid therapy, but they do require focused monitoring and case management. Ongoing monitoring should focus on the 4 A's (ie, analgesia, activities of daily living, adverse effects, and aberrant drug-related behaviors), and all aspects of patient care must be thoroughly documented.     

Management of chronic noncancer pain in depressed patients

Many patients with chronic noncancer pain present with comorbid depression, which can greatly complicate the treatment of pain. Chronic pain and depression each increase the risk of licit and illicit substance abuse, including the abuse of opioids, and of suicide. Patients attempting suicide may overdose on opioids, which are commonly perceived as potentially harmful, or acetaminophen, an agent that is believed to be safe but is actually the leading cause of liver failure in the United States. Opioids, acetaminophen, and nonsteroidal anti-inflammatory drugs (NSAIDs) have the potential to interact with antidepressants, and their adverse effects may be exacerbated by alcohol use, which is also common in patients with depression. Topical NSAIDs, capsaicin, and lidocaine provide effective analgesia for several pain conditions. These agents limit systemic drug exposure, reducing the risk of systemic adverse events without risk of accidental or deliberate overdose. However, use of topical agents is generally limited to localized pain syndromes and therefore does not substantially eliminate the need for systemic analgesics in those patients with diffuse persistent pain, central sensitization, and opioid-responsive pain. This review will discuss the challenges associated with treating chronic pain in depressed patients and will provide recommendations for optimizing treatment.     

Opioids in the treatment of chronic pain: legal framework and therapeutic indications and limitations

The most important message that physicians must communicate to persons with chronic pain is that, currently, no medication exists that will take away more than 30% of the pain they experience. Chronic pain is a chronic disease and, like diabetes or hypertension, requires chronic concessions and lifestyle modifications. In controlled trials of short duration and small sample size with highly selected patients, patients sustaining moderate-to-severe pain still experience moderate pain even on opioid medication. Adverse drug effects are predictable and common, and, in fact, long-term compliance with opioids is low owing to side effects. Screening for substance abuse by history taking, observing behavior, obtaining old medical records,and using UDS in patients before initiating opioid therapy is important to identify patients with comorbid addictive disease who require coincident or antecedent treatment. Familiarity with federal and state controlled substance legislation and state health care provider and pain treatment acts is a mundane but essential educational endeavor for all physicians prescribing opioids. If physicians educate their patients with chronic pain about the limited efficacy of the medications, patients' expectations for drug treatment can be more realistic.     

Chronic Pain: Reducing Costs Through Early Implementation of Adherence Testing and Recognition of Opioid Misuse

Abstract

Objective: To review the literature on costs associated with chronic pain therapy and to identify key contributing factors. Also, to assess the potential cost-saving benefits of monitoring pain treatment adherence using urine drug tests (UDTs), emphasizing their use in opioid therapy. Results: Reduced productivity, compensation costs, and treatment of comorbid conditions related to chronic pain contribute to the substantial financial burden of chronic pain management in the United States. The growing use of opioids for chronic pain increases the risk for drug nonadherence and associated drug abuse, potential addiction, and aberrant drug-related behaviors (ADRBs). Treatment of drug abuse increases health care costs; opioid abusers are 25 times more likely to require hospitalization than nonopioid abusers. Early detection of patient nonadherence using UDTs could significantly reduce costs of chronic pain therapy by allowing the physician to identify and treat patients' ADRBs related to controlled substances and drug addiction and abuse problems. Adherence in chronic pain may be determined by point-of-care (POC) tests, and more sensitive laboratory urine tests employing gas chromatography/mass spectrometry with high-performance liquid chromatography tests (LUTs). Cost-benefit studies suggest that the cost of LUTs to optimize adherence may reduce costs associated with nonadherence, such as inpatient clinical care and patient self-release. Current estimates indicate that appropriate use of LUTs could produce decreases up to 14.8-fold in the cost of chronic pain therapy. Conclusions: The cost benefits of UDTs can only be fully realized if physicians know how to define and detect various types of drug abuse, addiction, and diversion. Physicians should be educated on the proper implementation of POC tests and LUTs, and interpretation of adherence data. Early monitoring of drug adherence using POC tests and follow-up LUTs may provide substantial cost savings associated with health care issues incurred in nonadherent chronic pain patients, especially those taking opioid therapy.     

Opioid treatment of chronic pain in patients with addiction

Patients with a history of drug or alcohol addiction may present to physicians with pain complaints. The medical literature is weak on the treatment of pain with opioids in patients in recovery or active addiction. This is because inconsistent criteria were used to define addiction and the types of chronic pain. There are clear differences between physical dependence, tolerance, and addiction. Addiction is different from pseudoaddiction and must be determined by the patient's behavior after appropriate pain management. Long-acting opioids are often the medications of choice for moderate to severe pain control. Short-acting opioids can be used for breakthrough pain. There are many other medications that can enhance pain control as adjunctive analgesics. Drug-seeking behavior may be seen with either active addiction or pseudoaddiction, or as part of deviant behavior such as drug diversion. A way to distinguish between these conditions is by giving the patient appropriate pain medication and observing the pattern of behavior to determine which is causing the drug-seeking behavior. Safe prescribing of medications with abuse potential includes use of a medication agreement, setting goals with the patient, giving appropriate amounts of pain medication, monitoring with pill counts and drug screens, and careful documentation. Even patients with a history of addiction can benefit from opioid pain medications if monitored appropriately.