Guide to Pain Management in Low-Resource Settings
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- A diff erent story: do children also experience chronic pain
- How is chronic pain in children treated
- Guide to Pain Management in Low-Resource Settings Chapter 35 Pain in Old Age and Dementia Andreas Kopf What is a geriatric patient
- Pain management in geriatric patients Why is pain management for the geriatric patient a medical challenge for tomorrow
- What do elderly patients expect from their doctor
- Why do elderly patients not receive the care they need and deserve
- What are the opinions and statements of scientifi c medical organizations
- Is it true that pain is frequent in elderly patients
- What are the typical pain locations in elderly patients
- If adequate pain medication is provided for elderly patients, why might they still not receive suffi cient pain control
- Do patients with impaired communication, such as those with Alzheimer disease, receive insuffi cient analgesia
- What is likely to be the most important reason for inadequate pain management
- How is pain in the geriatric patient assessed eff ectively
- Case report: Mr. Ramiz Shehu (prostate cancer)
- 1) Th e options in Filipoje
What monitoring would be necessary for analgesia in the postoperative period? Resuscitation measures should be available at the bed- side for all patients who are receiving opioid infusions. Routine monitoring and recording of pain score, se- dation score, and respiratory rate is important in all moderately to severely painful conditions, and for all Pain Management in Children 267 patients on infusion. All children on opioid medica- tion should be monitored carefully for at least the fi rst 24 hours, including children on PCA without back- ground infusion. Sedation always precedes respiratory depression in opioid overdose. Th erefore, observation of the patient’s alertness is the key to safety monitoring. A monitoring frequency of check-ups every 4 hours is considered to be safe to detect increasing sedation. A decrease of respiratory rate below 30% of basal resting value may also be used as an alarm parameter. Oxygen saturation is a better monitor than apnea/respiratory rate monitors as it would detect airway obstruction ear- lier, but for the average situation and patient outside the intensive care ward, there is no indication that regular sedation control would be inferior to pulse oximetry. A diff erent story: do children also experience chronic pain? Yes they do, but little is known about the epidemiology of chronic pain in children, even in the affl uent coun- tries. Chronic pain is commonly observed in adoles- cents. Common conditions are headache, abdominal pain, musculoskeletal pain, pain of sickle cell disease, complex regional pain syndrome, and post-traumatic or postoperative neuropathic pain. Children with cancer or AIDS suff er from varying degrees of pain as the disease progresses. Recurrent pain becomes chronic because of failed attempts to adjust and cope with an uncontrol- lable, frightening, and adverse experience. Over time it is the weight of this experience that leads the patient to develop concomitant symptoms of chronic physical dis- ability, anxiety, sleep disturbance, school absence, and social withdrawal. Parents report severe parenting stress and dysfunctional family roles. Th ere is a greater psy- chological element in chronic pain as compared to acute pain as in adults. How is chronic pain in children treated? Assessment of chronic pain should establish not only the site, severity, and other characteristics of pain, but also the physical, emotional, and social impact of pain. Treatment should include specifi c therapy directed to the cause of pain and associated symptoms such as muscle spasms, sleep disturbance, anxiety, or depression. Standard analgesics such as NSAIDs and opioids may be used, along with antidepressants and anticonvulsants in neuropathic pain. Pharmacological management must be combined with supportive measures and integrative, nonpharmacological treatment modalities such as mas- sage, acupuncture, relaxation, and physiotherapy. Physical methods include a cuddle or hug from the family, mas- sage, transcutaneous electrical nerve stimulation, com- fortable positioning, physical or occupational therapy, as well as rehabilitation. Cognitive-behavioral techniques include guided imagery, hypnosis, abdominal breathing, distraction, and storytelling. Th e treatment plan should include passive, and if possible, active coping skills, to be implemented considering the child’s wishes and those of his or her family. Pearls of wisdom • For eff ective pain management in children, it is very important to know how to assess pain in dif- ferent age groups. • For perioperative pain management it is neces- sary to have basic knowledge of the specifi c phar- macokinetics and pharmacodynamics in this spe- cial age group. • Th ere should be an analgesia plan or algorithm available on the ward for typical therapeutic situ- ations. Nonpharmacological treatment options should be integrated into the analgesia plan. • Apart from perioperative pain management, a ba- sic ability to diagnose and manage simple chronic pain syndromes should be available. Th e majority of patients, almost 80–90%, may be managed by simple means, which should be available even in remote or very low-resource environments. Only a small percentage of patients need invasive tech- niques like epidural analgesia, which might be limited to referral centers. • With regard to monitoring of analgesia side ef- fects, nothing can substitute for vigilance and fre- quent clinical assessment. • No child should be withheld adequate and safe analgesia because of insuffi cient knowledge. Table 4 Dose of caudal bupivacaine (0.125–0.25%) 0.5 mL/kg for penile and anal surgery 0.75 mL/kg up to lumbar spine 1.00 mL/kg up to T10 1.25 mL/kg upper abdominal up to T6 268 Dilip Pawar and Lars Garten References [1] Bouwmeester NJ, Anderson BJ, Tibboel D, Holford NH. Developmental pharmacokinetics of morphine and its metabolites in neonates, infants and young children. B J Anaesth 2004;92:208–17. [2] Duhn LJ, Medves JM. A systematic integrative review of infant pain as- sessment tools. Adv Neonatal Care 2004;4:126–40. [3] Elia N, Tramer MR. Ketamine and postoperative pain—a quantitative systematic review of randomised trials. Pain 2005;113:61–70. [4] Gaughan DM, Hughes MD, Seage GR 3rd, Selwyn PA, Carey VJ, Gort- maker SL, Oleske JM. Th e prevalence of pain in pediatric human im- munodefi ciency virus/acquired immunodefi ciency syndrome as report- ed by participants in the Pediatric Late Outcomes Study (PACTG 219). Pediatrics 2002;109:1144–52. [5] Pawar D, Robinson S, Brown TCK. In: Brown TCK, Fisk GC, editors. Pain management in anaesthesia for children, 2nd edition. Melbourne: Blackwell Scientifi c; 1992. p. 127–37. [6] Pain control and sedation. Semin Fetal Neonatal Med 2006;11(4). [7] Stoddard FJ, Sheridan RL, Saxe GN, King BS, King BH, Chedekel DS, Schnitzer JJ, Martyn JA. Treatment of pain in acutely burned children. J Burn Care Rehabil 2002;23:135–56. [8] Wong DL, Baker CM. Pain in children: comparison of assessment scales. Pediatr Nurs 1988;14:9–17. [9] Zeltzer LK, Anderson CT, Schechter NL. Pediatric pain: current status and new directions. Curr Probl Pediatr 1990;20:409–86. [10] World Health Organization. Pocket book of hospital care for children: guidelines for the management of common illnesses with limited re- sources. Geneva: World Health Organization; 2005. Available at: www. who.int/publications. [11] World Health Organization. Integrated management of childhood ill- ness: complementary course on HIV/AIDS. Geneva: World Health Or- ganization; 2006. [12] World Health Organization. Palliative care: symptom management and end-of-life care. Geneva: World Health Organization; 2004. [13] World Health Organization. Symptom management and end-of-life care. Geneva: World Health Organization; 2005. Websites www.whocancerpain.wisc.edu Up-to-date information about pain and palliative care published by the WHO Pain & Palliative Care Communications Program www.whocancerpain.wisc.edu/related.html Lists of numerous websites related to pain and palliative care www.ippcweb.org Online education program for health care professionals by the “Initiative for Pediatric Palliative Care” Table 5 Duration of action of caudal bupivacaine with adjuvants Drug Duration of Action (hours) Bupivacaine 0.25% 4–6 Bupivacaine 0.25% with ketamine 0.5 mg/kg 8–12 Bupivacaine 0.25% with clonidine 1–2 μg/kg 8–12 Bupivacaine 0.25% with tramadol 1.5 mg/kg 12 Bupivacaine 0.25% with morphine 30–50 μg/kg 12–24 Bupivacaine 0.25% with ketamine 0.5 mg/kg and morphine 30 μg/kg 24 Table 6 Dosage of epidural infusions Bupivacaine 0.1% with fentanyl 1–2 μg/mL Infants under 6 months 0.1 mL/kg/h Children over 6 months 0.1–0.3 mL/kg/h Table 7 Frequently used drugs and their dosage regimes Drug Dosages and Regimens Dose According to Body Weight Drug Dosage Form 3–6 kg 6–10 kg 10–15 kg 15– 20 kg 20– 29 kg Paracetamol (acetaminophen) 10–15 mg/kg, up to 4 times a day 100-mg tablet 500-mg tablet - - 1 ¼ 1 ¼ 2 ½ 3 ½ Ibuprofen 5–10 mg/kg orally 6–8 hourly to a maximum of 500 mg/day 200-mg tablet 400-mg tablet - - ¼ - ¼ - ½ ¼ ¾ ½ Codeine 0.5–1 mg/kg orally 6–12 hourly 15-mg tablet ¼ ¼ ½ 1 1½ Morphine Calculate EXACT dose based on weight of child! Oral: 0.2–0.4 mg/kg 4–6 hourly; increase if necessary for severe pain. Intramuscular: 0.1–0.2 mg/kg 4–6-hourly. Intravenous bolus: 0.05–0.1 mg/kg 4–6-hourly (give slowly!). Intravenous infusion: 0.005–0.01 mg/kg/hour (in neonates only 0.002–0.003!). Ketamine 0.04 mg/kg/hr–0.15 mg/kg/hr i.v./s.c. (titrated to eff ect: usually maximum 0.3 mg/kg/h–0.6 mg/kg/h) OR 0.2 mg/kg/dose–0.4 mg/kg/dose orally t.i.d., q.i.d., and p.r.n. Tramadol 1 mg/kg–2 mg/kg 4–6 hourly (max. of 8 mg/kg/day) Adapted from: World Health Organization. Pocket book of hospital care for children—guidelines for the management of common illness with limited resources. World Health Organization; 2005. 269 Guide to Pain Management in Low-Resource Settings, edited by Andreas Kopf and Nilesh B. Patel. IASP, Seattle, © 2010. All rights reserved. Th is material may be used for educational and training purposes with proper citation of the source. Not for sale or commercial use. No responsibility is assumed by IASP for any injury and/or damage to persons or property as a matter of product liability, negligence, or from any use of any methods, products, instruction, or ideas contained in the material herein. Because of the rapid advances in the medical sciences, the publisher recommends that there should be independent verifi cation of diagnoses and drug dosages. Th e mention of specifi c pharmaceutical products and any medical procedure does not imply endorsement or recommendation by the editors, authors, or IASP in favor of other medical products or procedures that are not covered in the text. Guide to Pain Management in Low-Resource Settings Chapter 35 Pain in Old Age and Dementia Andreas Kopf What is a geriatric patient? A geriatric patient is a person of advanced biological age (the age in years being less important), with multiple morbidity, possibly multiple medications, psychosocial deprivation, and an indication for (general) rehabilita- tion. Th e treatment of geriatric patients is complicated when dementia is present, because of the patient’s im- paired communication abilities. Pain management in geriatric patients Why is pain management for the geriatric patient a medical challenge for tomorrow? An important demographic phenomenon of the last few decades in highly industrialized countries is the con- tinuous increase of the higher age groups in relation to the younger generation. Within a few decades, the same demographic change will take place in countries outside the Organization for Economic Co-operation and De- velopment (OECD) as well. For example, in Germany the number of inhabitants in the age group of above 80 years increased from 1.2 million in 1960 to 2.9 million today, and will further increase to 5.3 million by 2020. Th erefore, the health care system and health care work- ers will need to be prepared to be able to cope with this special patient group. With regard to pain problems, the geriatric patient will be a special challenge, since the percentage of patients with chronic pain (pain lasting more than 6 months) increases continuously from 11% to 47% between the ages of 40 to 75 years. Health care workers have to be aware that geriatric patients not only expect the general respect of society but—with increas- ing life-expectancy—deserve adequate medical treat- ment, including pain management. Societies have to discuss how they want to cope with this demand. What do elderly patients expect from their doctor? In surveys, the older generation has defi ned a “wish list”: being active until death, individual treatment, no pain, autonomous decision making, being able to die “early enough” before needless suff ering starts, and addressing reduced social context and contacts. Why do elderly patients not receive the care they need and deserve? From the patient’s perspective: • Th e incidence of dementia increases with age, resulting in impaired communication. • Elderly patients tend to behave like “good pa- tients”. • Th ey have a traditional “trusting” view of the doctor “who will take care of everything that is necessary.” 270 Andreas Kopf • Th ey tend to not insist on certain medical inter- ventions. From the patient’s and doctor’s perspective: • Pain in old age is “part of life” and “fate.” From society’s perspective: • Inadequate resources in the health care system restrict adequate treatment. From the doctor’s perspective: • Elderly patients do not feel pain as intensely as younger patients. • Th ey cope better with pain and therefore need less analgesia. What are the opinions and statements of scientifi c medical organizations? A wealth of literature shows that geriatric patients are not provided with adequate pain management. Medi- cal societies have made the elderly patient a medical priority. Since pain is frequent, meaningful, underdi- agnosed, and undertreated, and since research on this topic is scarce, pain in the elderly has to be declared a medical priority. Consequently, the IASP in September 2006 proclaimed “pain in old age” the main target of the “Global Day of Pain.” Is it true that pain is frequent in elderly patients? A number of studies document that the incidence of pain is high. In old people’s homes, up to three-quarters of interviewed residents reported pain. Half of these had daily pain, but less than one-fi fth were taking an anal- gesic medication. Studies show that unrelieved pain is one of the most important predictive factors for physi- cal disability. What are the typical pain locations in elderly patients? Th e number one cause of pain in elderly patients is degenerative spine disease, followed by osteoarthro- sis and osteoarthritis. Other important pain etiolo- gies include polyneuropathy and postherpetic neural- gia. Cancer pain is also a very relevant pain etiology. In highly industrialized countries cancer pain in the elderly is often—at least partially—adequately con- trolled. But in other countries, management of cancer pain often is not a top priority, although good cancer pain management could be accomplished fairly easy with simple treatment algorithms based mainly on an adequate opioid supply. If adequate pain medication is provided for elderly patients, why might they still not receive suffi cient pain control? Communication problems and misconceptions of pain are relevant causes of this situation. A number of par- ticularities must be considered in the geriatric patient: • Compliance: Geriatric patients will have predict- able practical problems with their pain medica- tion. Impaired vision and motor skills, combined with xerostomia (dry mouth) and disturbances of memory, may make an adequate treatment a complete failure. It has to be noted that the aver- age geriatric patient in industrialized countries has a prescription for seven diff erent drugs, and only a minority of patients have been prescribed fewer than fi ve daily drugs, making noncompli- ance and drug interactions highly likely. Noncom- pliance rates are estimated to be as high as 20%. Apart from that, intellectual, cognitive, and sim- ple manual impairments may interfere with treat- ment. More than a fi fth of geriatric patients fail at the task of opening drug packages and blister packs. Another patient-related compliance factor, compared to younger patients, is reduced “posi- tive thinking”: only 20% of geriatric patients ex- pect recovery and healing. • Availability of opioids and the risks of prescrip- tion. • Comorbidity: Comorbidity may impair physical performance, thereby possibly reducing the ef- fects of rehabilitation eff orts. • Pharmacokinetic changes: One of the main physiological changes in geriatric patients is the reduction of cytochrome P450-dependent me- tabolization. Also, due to reduced hepatic func- tion, plasma protein levels are generally lower in elderly patients. Both altered mechanisms may cause potential dangerous drug interac- tions and unpredictable plasma levels. Th is ef- fect may be most pronounced for drugs that are eliminated through the kidneys, since glomeru- lar fi ltration rate is generally reduced, too, and for drugs with high plasma protein binding, where unpredictable serum levels of free sub- stance may result. • Vegetative state: Sympathetic reactions are re- duced, causing misunderstanding and underesti- mation of pain, since the elderly patient appears to be less strained by pain. Pain in Old Age and Dementia 271 With regard to the opioid-receptor population and subjective sensitivity to painful stimuli, there is confl ict- ing evidence. Th erefore the conclusion has to be that pain perception and analgesic interactions are unpre- dictable. Do patients with impaired communication, such as those with Alzheimer disease, receive insuffi cient analgesia? Unfortunately, a number of studies show that patients with Alzheimer disease, and diffi cult or impossible communication, receive insuffi cient analgesia. Th is has been shown both for acute situations such as fractures of the neck of the femur and for chronic pain. Th is ob- servation is alarming since there is evidence showing that the pain perception of Alzheimer patients is undis- turbed. What is likely to be the most important reason for inadequate pain management? Much of the problem of inadequate pain management of the geriatric patient is the lack of appropriate assess- ment. Especially in patients with dementia, failure to assess pain properly results in insuffi cient analgesia, be- cause less than 3% of these patients will communicate that they need analgesics themselves. How is pain in the geriatric patient assessed eff ectively? Th e main rule for the geriatric patient is: “ask for pain.” Th e patient may not ask for analgesia spontaneously. All reported pain should be taken seriously; it is the patient who has the pain, and the pain is what the patient tells you it is. Conventional instruments may be used for pain assessment, such as analogue scales or verbal rat- ing scales, if the patient is able to communicate prop- erly. But rating and analogue scales will fail in the non- communicating patient. Th erefore, it will be necessary to use more sophisticated techniques. All these tech- niques are based on careful observation and interpre- tation of the patient’s behavior. Several scoring systems have been developed for this task. Typical items for ob- servation include facial impression, daily activity, emo- tional reactions, body position, the chance of consola- tion, and vegetative reactions. Some scores also include the subjective impression of the therapist. Recent clini- cal research has tried to interpret various therapeutic interventions to fi nd out more about the patient’s pain, with trials called “sequential intervention trials.” Case report: Mr. Ramiz Shehu (prostate cancer) Mr. Shehu is a 72-year-old farmer from the north- ern part of Albania, living in the village of Filipoje. He was diagnosed with prostate cancer 3 years ago when he presented himself to the local doctor, Dr. Frasheri, with diffi culties with urination. As disease of the pros- tate was suspected, blood was drawn and send to the district hospital for the prostate-specifi c antigen (PSA) test. Unfortunately, the PSA was highly positive. After careful evaluation of the individual situation, espe- cially regarding the comorbidity with hypertension and heart insuffi ciency as well as the patient’s advanced age, Dr. Frasheri concluded that there would not be an indication to send Mr. Shehu to the capital Tirana for surgery, chemotherapy, or radiotherapy. Now, after 3 years, Mr. Shehu was still in relatively good general condition, being an important and active member of St. Bartholomew’s church in his home village. But in the recent weeks he had developed increasing pain in his left chest and left hip. He described his pain as “drill- ing,” increasing with activity, especially when walking and taking a deep breath. Visitors from Italy had fi rst suspected coronary disease and hip arthritis, since the high PSA had been forgotten by that time. But the local doctor drew the correct conclusions. 1) Th e options in Filipoje Local therapy: Use a walking stick, apply a home-made elastic bandage around the chest. Systemic therapy: Th e only pain killers available were di- clofenac and morphine. Download 4.8 Kb. Do'stlaringiz bilan baham: |
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