Pain and Substance Abuse: A Growing Struggle in AIDS Care
Thursday, December 14th, 2006Barriers to Adequate Pain Treatment
Pain is a common problem for people living with HIV disease. The onset of pain as a clinical problem varies throughout the disease process and increases with disease advancement. Nurses caring for patients with HIV disease need to understand the etiologies, clinical implications, and treatment interventions associated with pain syndromes.
The prevalence of pain in patients with HIV disease ranges from 50% to 90%, depending on disease stage and other comorbidities.[1] However, pain syndromes often are untreated or undertreated, resulting in physiological and psychological deterioration of the patient, said Debra Trimble, RN, MS, FNPC, Thomas Street Clinic, Houston, Texas. Trimble and colleagues identified several common barriers to pain treatment, including system barriers, reluctance of healthcare providers to treat pain, patient and family fears of developing an addiction, and legal issues (ie, providers having to deal with the US Drug Enforcement Agency).
People living with HIV face many psychosocial stresses and may experience social ostracism because of their risk-associated behavior, such as men who have sex with men and injection drug users. They often do not receive appropriate healthcare. Nurses are in the unique position to advance the treatment of pain syndromes in HIV disease by combining their clinical skills as primary care providers with their role as patient advocate.
Subtherapeutic treatment of pain is often a result of inadequate assessment. Although psychological, social, and spiritual factors can influence the manifestation of pain, organic etiologies need to be considered. Evaluation of pain should always be made on the assumption that organic factors are contributing to the pathophysiology of the pain.
An initial pain assessment should be performed with every new patient report of pain, and it should focus of the site (cause) of the complaint. Ongoing pain assessments should be performed at regular intervals after implementing a treatment plan and with each new patient report of pain.
The initial assessment should include: a detailed history, including intensity assessment; a physical examination, including appropriate laboratory studies; a psychosocial assessment; and a diagnostic workup to determine the causes of the pain. The mnemonic “ABCDE” can be used as a routine approach to pain assessment:
A — Ask about pain regularly and assess pain systematically.
B — Believe the patient and family in their reports of pain and what relieves it.
C — Choose pain control options that are appropriate for the patient, family, and setting.
D — Deliver an intervention in a timely, logical, and coordinated fashion.
E — Empower patients and their families.
This approach enables patients to control their pain to the greatest extent possible.
Dangerous Interactions
Unfortunately, the treatment of chronic pain in HIV disease has been complicated recently by old and emerging issues with “street drugs” and dependency.
The combination of recreational drugs and antiretroviral therapy can be a “deadly cocktail,” said Jean Clermont-Drolet, RN, Street Nurse for MIELS-Quebec, Quebec City, Canada. Often, people use more than 1 street drug at a time to help counteract the different effects, he said. For example, someone who is highly agitated after taking an amphetamine (”speed” or “meth”) may try to balance that by taking a narcotic to “calm” them down. Therefore, when patients present in emergency rooms with drug-related problems, nurses should not assume they are under the influence of just 1 drug, but rather should do a comprehensive evaluation and assessment.
Clermont-Drolet reviewed the principles of harm reduction, a practice model that does not judge behavior. This model is based on various stages of readiness to change; it meets the person “where they are” in their readiness to change behavior. The behavioral change does not have to be total abstinence as in the 12-step approach. Instead, it can be gradual and may include reducing the amount of substance being used or only using the substance under specific times and conditions.[2]
Another significant issue is the wide variability in “purity” of recreational drugs, Clermont-Drolet said. Street drugs are frequently mixed with a white crystalline powder, such as baking soda, which can alter the purity of the drug from 2% to as much as 98%. This practice, called “cutting,” is fairly standard as it increases the amount of the illegal drug and enhances profits for drug dealers.
Clermont-Drolet discussed some widely used antiretroviral drugs and how they can alter the amount of illegal drugs in the body and can lead to overdosing. Ritonavir (Norvir) is a protease inhibitor that is used to “boost” other anti-HIV medications. However, the boosting effect can also increase the level of recreational drugs. Employing the principles of harm reduction, caregivers should advise patients taking ritonavir to take only half the usual amount of any street drug, then gradually add more if needed, he said.
Another potentially serious interaction exists for patients on methadone maintenance, Clermont-Drolet said. Several agents, including ritonavir, lopinavir/ritonavir (Kaletra), and efavirenz (Sustiva), can decrease the circulating serum levels of methadone. Patients taking these HIV medications who need to be on methadone may need a higher dosage of methadone to prevent narcotic withdrawal.
A Growing Epidemic of Drug Abuse
Nurses need to be especially aware of the growing use of crystal methamphetamine, known simply as “meth,” said Julie Gumowski, RN, BSN, Research Nurse from the National Institutes of Health (NIH). Meth is second only to marijuana in rate of abuse, she said, and there are more than 35 million meth users in the world today.[3]
Meth can cause a state of euphoria that can last for hours to days, depending on how it is ingested, Gumowski explained. Meth can be smoked, injected, inhaled (”snorting”), or inserted rectally (”booty bumps”). Meth masks the body’s need for sleep and food but increases sexual desire, which can lead to “marathon” sexual sessions with multiple partners. This can lead to increased transmission of HIV and other sexually transmitted diseases.
Although meth use was once confined primarily to certain populations, such as men who have sex with men, it has now spread to all sections of society, from “soccer moms” to business executives, Gumowski said. It is found in both rural and urban areas, and in all populations. Meth is “cheap to make with ingredients readily available at the local hardware store,” she noted. Also, the recipe for making meth can be found on numerous Web sites.
Short-term medical complications of meth use include central nervous system excitation, such as increased alertness, energy, and activity. Tremors and vertigo can also occur. Cardiac complications include tachycardia and hypertension; myocardial infarction and stroke have also been seen as the result of meth use.
The short-term complications are exacerbated by long-term effects. Neurodegeneration occurs and impairment of motor and learning function can take place, as well as symptoms of bruxism (habitual grinding of the teeth) and skin changes that present as obsessive scratching and skin sores. Gumowski also noted that when meth is smoked, the corrosive nature of the smoke is so extensive that it can actually penetrate tooth enamel, leading to significant periodontal disease. Portions of the teeth may break off, producing a condition commonly referred to as “meth mouth.”
In addition to the medical complications of meth use, many users experience psychiatric effects, Gumowski said. Patients can experience episodes of violent behavior, paranoia, anxiety, confusion, and insomnia. Depression and mood swings are also common and tend to persist and lead to severe depression, sometimes resulting in suicidal behavior.
As the meth epidemic grows, there is high demand for treatment. Unfortunately, treatment centers are in very short supply, Gumowski said, and the relapse rate for meth abuse can be a high as 92%.
Gumowski concluded that nurses need to be vigilant about assessing for meth use in all populations. It is important to treat acute symptoms and to encourage patients to enter a drug rehabilitation program.
References
1. Trimble D, Sandoval DM, Benavides J. Unmet need: chronic pain management in the HIV clinic. Program and abstracts of the Association of Nurses in AIDS Care 18th Annual Meeting; November 17-20, 2005; Orlando, Florida.
2. Clermont-Drolet J. Street drugs and antiretroviral therapy (ART): what every nurse must know. Program and abstracts of the Association of Nurses in AIDS Care 18th Annual Meeting; November 17-20, 2005; Orlando, Florida.
3. Gumowski J. Sharing crystal methamphetamine: the new epidemic associated with HIV. Program and abstracts of the Association of Nurses in AIDS Care 18th Annual Meeting; November 17-20, 2005; Orlando, Florida.
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