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2 Geriatric Pain ManagementLong Term Care/Nursing 65511/ Geriatric Pain Management Mark V. Boswell, MD, PhD, MBA Professor and Chair, Department of Anesthesiology University of Louisville School of Medicine Louisville, Kentucky

3 Geriatric Pain ManagementLong Term Care/Nursing 65511/ Geriatric Pain Management Parampal Singh Bhullar, MD Assistant Professor, Internal Medicine Texas Tech University Health Sciences Center Lubbock, Texas

4 Long Term Care/Nursing65511/ Objectives Recognize definitions, demographics, and physiologic changes. 

5 Long Term Care/Nursing65511/ Objectives Indicate diagnosis, therapy, and general health status.

6 Long Term Care/Nursing65511/ Objectives Identify equianalgesic prescribing and opioid management.

7 Lecture Outline Definitions and demographics Physiologic changes with age Diagnosis and therapy

8 Lecture Outline Functionality and competence General health status

9 Definitions and Demographics

10 Definitions Young elderly: age 65 years or older Older elderly: 75 years Chronic pain: >3 months duration

11 Demographics 6% of total world population in 1994 12.5% of population in USA (33.2 million) Large percentage of pain practice

12 Physiologic Changes with Age

13 Experimental Pain Detection Threshold in the ElderlyInconsistent findings presbyalgos: loss of pain sensibilities with age

14 nociceptor sensitivity (threshold)cutaneous electrical current: no change heat: increased mechanical pressure: increased

15 Pain Tolerance ThresholdCutaneous electrical current: decreased Cold pressor test: decreased Mechanical pressure: decreased

16 Pain Tolerance ThresholdHeat tolerance: unclear

17 Central Nervous System (CNS) ChangesFrontal and temporal lobes Neuronal plasticity may persist into the 70s Volume and number of neurons lost less than previously thought

18 CNS Changes in the Disabled Elderly90%: CNS dysfunction 48%: neurological disease 20%: movement disorders

19 CNS Changes in the Disabled Elderly16%: dementia 16%: strokes or transient ischemic attacks (TIAs)

20 Neurotransmitter ChangesCholinergic decline: dementias (anticholinergics cause confusion) Serotonin system: depression

21 Neurotransmitter ChangesDopaminergic system: movement disorders

22 Neurotransmitter ChangesNorepinephrine system reduced sympathetic tone orthostasis susceptibility to sympathetic blockers (tricyclic antidepressants)

23 Acetylcholine Synthesized in interneurons and long projection neurons (monoamines not synthesized in interneurons, except dopamine in the retina)

24 Hepatic System Liver size and blood flow decrease after age 50 First pass metabolism reduced

25 Hepatic System Demethylation decreased (e.g., diazepam clearance reduced by 50%)

26 Renal System 1% per year decline in creatinine clearance after age 40 Kidney size decreased by 20% (glomerular sclerosis)

27 Renal System Fewer renal tubules Renal vascular changes

28 Renal System Creatinine alone not good predictor of glomerular filtration rate Reduced drug clearance

29 Pharmacokinetic ChangesMost drugs show some decrease in clearance volume of distribution lean body mass decreases increased lipid content

30 Pharmacodynamic ChangesIncreased sensitivity to opioids and benzodiazepines: effect not due only to pharmacokinetic changes

31 Diagnosis and Therapy

32 Short-Form McGill Pain Questionnaire

33 Functional Pain Scale

34 Katz IADL (Instrumental Activities of Daily Living) Scale

35 Interventional ProceduresReduced compliance on polypharmacy

36 Interventional ProceduresEpidural steroid injections transforaminal caudal Facet nerve radiofrequency neurolysis Sacroiliac injections

37 Hospice and Palliative CareUnderutilized in United States

38 Specific Drugs

39 NSAIDS (Nonsteroidal Antiinflammatory Drugs)COX II selective vs. nonselective

40 NSAIDS (Nonsteroidal Antiinflammatory Drugs)Gastrointestinal (GI) safety of COX II selective agents for patients taking daily aspirin unclear

41 NSAIDS (Nonsteroidal Antiinflammatory Drugs)celecoxib: 50% reduction in bleeding compared to nonselective NSAIDs Cochrane Study: aspirin offsets safety

42 NSAIDS (Nonsteroidal Antiinflammatory Drugs)Renal effects with both agents selective and nonselective

43 Problems with NSAIDS Fluid retention or congestive heart failure Other problems history of GI bleeding risk of thrombotic events

44 Celecoxib Indications: osteoarthritis and rheumatoid arthritis; acute pain in adults

45 Celecoxib Must worry about decreased clearance and warnings regarding post coronary artery bypass graft, thrombosis, and stroke

46 American Geriatric Society RecommendationsAcetaminophen is drug of choice for musculoskeletal pain

47 Benzodiazepines Cognitive impairment age >65 alcohol use high lipid solubility agents

48 Benzodiazepines Cognitive impairment prolonged cognitive effects after benzodiazepine sedation

49 Antidepressants Tricyclic antidepressants (TCAs) – best evidence for treatment of neuropathic pain (many side effects)

50 Opioids

51 Morphine Morphine metabolites (M6G) active and accumulate with renal insufficiency Conclusion: use smaller doses in elderly

52 Oxycodone Oxycodone does not require dosage reduction in elderly Note: reduce dose when creatinine clearance <60 ml/min

53 Meperidine Generally poor choice for elderly patients

54 Functionality and Competence

55 Polypharmacy common in geriatrics – can affect cognitive function (dementias)

56 General Health Status

57 Clinical Pain in the ElderlySome evidence that migraine, tension headache, and low back pain less prevalent than in middle age

58 Clinical Pain in the ElderlySpinal stenosis higher in older population

59 Causes of Death Heart disease Malignancies Cerebrovascular disease Pulmonary diseases

60 Rheumatoid Arthritis 3% of population Male:female = 1:3 Inflammation of synovial joints; osteoporosis Majority of patients have cervical spine involvement

61 Polymyalgia RheumaticaAffects patients aged >55 Almost exclusively Caucasians Twice as common in females as males

62 Polymyalgia RheumaticaProximal muscles: aching pain in shoulders and hips Generalized malaise Elevated sedimentation rate (ESR) usually elevated (>50)

63 Temporal Arteritis Giant cell temporal arteritis incidence: cases per 100,000 associated with polymyalgia headache is leading symptom

64 Temporal Arteritis Oral steroids to prevent blindness (prednisone: 50 mg/day) Biopsy to prove diagnosis

65 Herpes Zoster Everyone >60 should get the vaccine

66 Postherpetic NeuralgiaPain that persists after rash has healed

67 Atherosclerotic Peripheral Vascular DiseaseVascular claudication

68 Degenerative DiseasesOsteoarthritis: joint pain Spine disorders spondylosis spinal stenosis spondylolisthesis

69 Alzheimer’s Disease and DementiaImpact ability to provide a pain regimen that patient can understand

70 Depression Serotonin dysfunction Confounding problem with pain management

71 Chemical Classes of Opioids

72 Phenanthrenes morphine codeine hydromorphone hydrocodone oxycodone oxymorphone

73 Diphenylheptane derivativesmethadone propoxyphene Phenylpiperidine derivatives fentanyl meperidine

74 Misconceptions About OpioidsRespiratory depression Addiction Rapid tolerance Narrow effective dose range Ineffective by mouth Nausea/euphoria

75 Equianalgesic Dosing Opioid Agonist PO (oral) IV (intravenously)Morphine/ Hydrocodone 30 10 Oxycodone 20 - Hydromorphone 7.5 1.5 Fentanyl mcg Fentanyl patch 25 mcg/hour ~ 50 mg/24 hours of PO morphine every 72 hours

76 Effective dose at home = Lortab® 2 tablets = 10 mg hydrocodone = 10 mg morphine equivalentReduce dose by 25-50% for reduced cross-tolerance = mg morphine

77 Convert to IV morphine: divide by 3 = 1. 6-2Convert to IV morphine: divide by 3 = mg IV morphine (give ~2 mg IV morphine)

78 Opioid Receptors Limited cross-tolerance – a patient receiving treatment with an opioid may experience more effective analgesia from a lower than equivalent dose of another opioid

79 Opioid Receptors It is recommended that after calculating the appropriate conversion dose, it be reduced by 25-50% to assure patient safety

80 How to Start a Regimen 24 hours of PRN (as needed) medications vs. PCA (patient-controlled analgesia)

81 How to Start a Regimen low dose (5 mg PO morphine) of immediate release product and monitor response after 1 hour – if IV, monitor response after 15 minutes

82 How to Start a Regimen once what works for the patient is discovered, write every 4 hours PRN and additional dose for breakthrough pain

83 How to Start a Regimen frail elderly: begin with % of usual adult dose

84 Titration Increments for Opioid DosingNo ceiling effect Breakthrough analgesia should be one sixth of the total regular daily dose of oral morphine. Each day assess the pain control, degree of side effects and total amount of morphine required, including breakthrough doses, in the previous 24 hours. Divide the total amount required in the previous 24 hours by six. Prescribe this dose every four hours and alter the breakthrough analgesia dose accordingly (this is the same as the four hourly dose) ie. one sixth of the total daily regular morphine dose.

85 Titration Increments for Opioid DosingKnow half-life of formulations/peak effect frequency PO: 1 hour Breakthrough analgesia should be one sixth of the total regular daily dose of oral morphine. Each day assess the pain control, degree of side effects and total amount of morphine required, including breakthrough doses, in the previous 24 hours. Divide the total amount required in the previous 24 hours by six. Prescribe this dose every four hours and alter the breakthrough analgesia dose accordingly (this is the same as the four hourly dose) ie. one sixth of the total daily regular morphine dose.

86 Titration Increments for Opioid DosingKnow half-life of formulations/peak effect frequency subcutaneous: minutes Breakthrough analgesia should be one sixth of the total regular daily dose of oral morphine. Each day assess the pain control, degree of side effects and total amount of morphine required, including breakthrough doses, in the previous 24 hours. Divide the total amount required in the previous 24 hours by six. Prescribe this dose every four hours and alter the breakthrough analgesia dose accordingly (this is the same as the four hourly dose) ie. one sixth of the total daily regular morphine dose.

87 Titration Increments for Opioid DosingKnow half-life of formulations/peak effect frequency subcutaneous: minutes IV max: 6-15 minutes Breakthrough analgesia should be one sixth of the total regular daily dose of oral morphine. Each day assess the pain control, degree of side effects and total amount of morphine required, including breakthrough doses, in the previous 24 hours. Divide the total amount required in the previous 24 hours by six. Prescribe this dose every four hours and alter the breakthrough analgesia dose accordingly (this is the same as the four hourly dose) ie. one sixth of the total daily regular morphine dose.

88 Titration Increments for Opioid DosingBreakthrough pain should be treated with 10-20% of the daily maintenance dose Breakthrough analgesia should be one sixth of the total regular daily dose of oral morphine. Each day assess the pain control, degree of side effects and total amount of morphine required, including breakthrough doses, in the previous 24 hours. Divide the total amount required in the previous 24 hours by six. Prescribe this dose every four hours and alter the breakthrough analgesia dose accordingly (this is the same as the four hourly dose) ie. one sixth of the total daily regular morphine dose.

89 Titration Increments for Opioid DosingIncrease daily maintenance by: 0-25% for mild pain 25-50% for moderate pain 50-100% for severe pain

90 Titration Increments for Opioid DosingIncrease daily maintenance if patient requires 3 or more breakthrough doses over 24 hours

91 Titration Increments for Opioid DosingContinuing reassessment: poor response – adjuvant drugs; nonphysical pain

92 PCA Dosing Acute pain management reevaluate in 15 minutes monitor respiratory rate: >8 okay Start lowest effective dose

93 PCA Dosing Use continuous dosing with patient previously on chronic opioids – calculate based on 24-hour dosing

94 PCA Dosing Breakthrough dose every minutes – usually 50% of hourly dose

95 Drugs to Avoid in ElderlyMeperidine (renal, central nervous system toxicity) Propoxyphene (central nervous system, cardiac, renal toxicity)

96 Opioid Neurotoxicity Triad of: delirium, hallucinations myoclonic jerks, seizures hyperalgesia, allodynia

97 Opioid Neurotoxicity Treatment change opioids IV hydration

98 Opioid Overdose/ToxicityRare; suspected when level of consciousness and respiratory rate decrease concomitantly to <6/minute; constricted pupils

99 Opioid Overdose/ToxicityReversal: dilute 1 ampoule (0.4 mg) of naloxone in 10 ml of saline and give 1 ml of this diluted mixture (0.04 mg) IV every 5 minutes

100 Pain and the Elderly – MythsPain is a normal, expected part of aging No complaint of pain means no pain Pain is a normal, expected part of aging. Pain is common--but not normal Pain sensitivity and perception decreases with age. Disease presentation may be altered in the elderly, such as painless myocardial infarction or perforated viscus, and disease states, such as diabetes, may diminish sensory acuity. However, in the absence of disease, aging does not alter pain sensitivity and threshold. Patient self-report of pain is unreliable. Self-report is accurate for 99% of patients, even those with mild to moderate dementia. However, a recent report by Caring editorial board member Jiska Cohen-Mansfield, PhD, and colleagues demonstrated that even expert geriatricians have difficulty with accurately evaluating pain in non-communicative patients with advanced dementia (Pain in cognitively impaired nursing home residents: How well are physicians diagnosing it? J Am Geriatr Soc. 2002; 50:1039). Research on pain assessment in advanced dementia is a "work in progress," according to Mary Cadogan RN, DrPH (Assessing pain in cognitively impaired nursing home residents: The state of the science and the state we're in. JAMDA. 2003; 4: 50-51). Premature administration of analgesics will obscure the diagnosis. This lore arose from a few isolated case reports most cases encountered in practice. No complaint of pain means no pain. Clinicians will fail to detect pain unless they ask and listen attentively. This is especially true of the current generation of elders, who are culturally conditioned to suffer silently.

101 Basic Rules By the mouth Around-the-clock for chronic pain By the ladder Start lowest effective dose Reassess and adjust

102 Long Term Care/Nursing Geriatric Pain Management65511/ Geriatric Pain Management If you have any questions about the program you have just watched, you may call us at: (800) or fax (806) Direct your inquiries to Customer Service. Be sure to include the program number, title and speaker.

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105 Nursing 316111 The Texas Tech University Health Sciences Center Continuing Nursing Education Program is accredited as a provider of continuing nursing education by the American Nurses Credentialing Center's Commission on Accreditation. Provider approved by California Board of Registered Nursing, Provider #CEP11800, for the designated number of contact hours for each program. Provider approved by Florida Department of Health Board of Nursing, Provider #FBN Provider approved by West Virginia Board of Examiners for Registered Professional Nurses, Provider #WV RN. Iowa Board of Nursing approved provider #325. Accepted by the North Carolina Board of Nursing. Reminder to all PARTICIPANTS, certificates should be retained for a period of four (4) years. Health.edu reports Florida Continuing Education (Contact Hours) to CE Broker. This activity provides 1.5 contact hours.

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107 316111 DISCLOSURE TO PARTICIPANTSNursing 316111 DISCLOSURE TO PARTICIPANTS Requirements of successful course completion: •Complete the program via video presentation, PowerPoint slides, audio presentation, and/or manuscript. •Complete the course evaluation. •Complete the posttest with a score of 80% or greater. •Complete the time utilized in course completion including the posttest.

108 316111 Nursing Conflicts of Interest:Mark V. Boswell, MD, PhD, MBA and Parampal Singh Bhullar, MD have disclosed that no financial interests, arrangements or affiliations with organization/s that could be perceived as a real or apparent conflict of interest in employment, leadership positions, research funding, paid consultants or member of an advisory board or review panel, speaker’s bureau, major stock or investment holder, or other remuneration. Commercial Support: There is no commercial support and/or relevant financial relationships related to this educational activity. Commercial support is defined as financial (or in-kind) contributions given by a commercial interest, which is used to pay all or part of the costs of a CNE activity. Relevant financial relationships are defined as financial relationships of any amount, occurring within the past 12 months, including financial relationships of a spouse or life partner that could create a conflict of interest.

109 316111 Nursing Non-endorsement of Products:Mark V. Boswell, MD, PhD, MBA and Parampal Singh Bhullar, MD have disclosed that no significant relationships with commercial companies whose products or services are discussed in educational presentations. For speakers, significant relationships include receiving from a commercial company research grants, consultancies, honoraria and travel, or other benefits or having a self-managed equity interest in a company. Disclosure of a relationship is not intended to suggest or condone bias in any presentation, but is made to provide participants with information that might be of potential importance to their evaluation of a presentation. Off-label Use: Mark V. Boswell, MD, PhD, MBA and Parampal Singh Bhullar, MD have has disclosed that no products with off-label or unapproved uses are discussed within this activity.

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