Pain Management in Primary Care: Patient Selection, Analgesics, and Compliance Monitoring. Joshua D. Dion MSN, APRN-BC, ACNP

Transcription

1 Pain Management in Primary Care: Patient Selection, Analgesics, and Compliance Monitoring. Joshua D. Dion MSN, APRN-BC, ACNP

2 Objectives Background and Significance of Chronic Pain Pharmacology for Pain Management. Proper Patient Selection, Compliance Monitoring, and Treatment Agreements Case Studies.

3 NONE Disclosures

4 What is Pain? International Association for the Study of Pain Definition: An unpleasant sensory and emotional experience associated with actual or potential tissue damage, or described in terms of such damage Margo McCaffery s Definition: Pain is whatever the experiencing person says it is, existing whenever the experiencing person says it does.

5 TYPES OF PAIN Duration Cause Location Acute Nociceptive Somatic Chronic Neuropathic Visceral

6 Duration Acute pain Chronic pain Relatively brief duration Etiology known Pain proportionate to damage ~ Transient objective signs Anxiety, anger, fear common Longer duration Etiology ~ unknown Pain ~disproportionate Often no objective sign Depression is common

7 Background & Significance According to the Institute of Medicine Report on Relieving Pain in America 2011: Chronic pain affects > 100 million Americans 35% to 50% of adults $560 to 635 billion per year in healthcare costs and lost productivity. Chronic pain will continue to rise as a result of: age, obesity, advances in medicine, poor management of surgical pain, recognition of the disease.

8 Lower Back Pain The financial burdens to the patient, the healthcare system, and society are immense. Low back pain is the leading cause of disability for Americans under 45 years of age. Lower back pain is one of the primary reasons for patients to seek healthcare.

9 Consequences of Unrelieved Pain Physical stress, emotional distress, & suffering Insomnia Immobility & de-conditioning Impaired hormonal & immune function Atelectasis,, hypoxia, & increase cardiac workload Increases morbidity and mortality Sensitization & neuroplasticity

10 Assessing the Body Comprehensive pain assessment Examination of affected body part(s) Symmetry Effect of medications (desired / undesired) ROM, Strength, Functioning General health Review of Systems

11 Assessing the Mind Emotional state (sad, mad, scared, frustrated) Stress / distress level Memory, concentration (MMSE) Cognitions Self doubts, learned helplessness Rumination, self-pity Distortions, catastrophizing Acceptance

12 Assessing Social Interactions Impact of pain on activities (meaningful, pleasurable) Relationships with family members / friends Abusive relationships? Assistance given / received from others Use of alcohol, drugs, tobacco Talk with patient and S.O. s Self awareness re: therapeutic relationship

13 Targeting the Body: Selected techniques Medications Invasive procedures Nerve blocks / neuroblation Implanted devices Acupuncture Massage / manipulation Apply heat / ice Avoid pain triggers environmental, dietary, overexertion Exercise Positioning Sleep Hygeine

14 Targeting the Body Fix Fix treatable causes of the pain Cure-directed Block or damage malfunctioning nerves Strengthen defenses to dampen pain Increase endorphin production / release Prevent Pain Flares Avoid factors that exacerbate pain Promote wellness and develop strength

15 Targeting the Body: Principle of balance Balanced approach to analgesics Drug class selection Concerns of effect vs. side effect Therapeutic vs. Legal concerns Consensus statements vs. Media Balance pain reduction & functioning

16 Pain Treatment Continuum Diagnosis Physical Therapy OTC Pain Medications

17 Pain Treatment Continuum First-Tier Pain Therapies Diagnosis Physical Therapy OTC Pain Medications NSAIDs TENS Psychological Therapy Nerve Blocks

18 Pain Treatment Continuum First-Tier Pain Therapies Second-Tier Pain Therapies Diagnosis Opioids Neurolysis Thermal Procedures Physical Therapy OTC Pain Medications NSAIDs TENS Psychological Therapy Nerve Blocks

19 Pain Treatment Continuum Advanced Pain Therapies First-Tier Pain Therapies Second-Tier Pain Therapies Neurostimulation Implantable Drug Pumps Surgical Intervention Neuroablation Diagnosis Opioids Neurolysis Thermal Procedures Physical Therapy OTC Pain Medications NSAIDs TENS Psychological Therapy Nerve Blocks

20 Principles for Using Analgesics By the Step (WHO ladder) By the Clock Adequately trial each drug Stay low and go slow

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22 Non-Opioids / NSAIDs Benefits Good for mild pain Helps sore, aching pain Treats inflammation Treats fever Many products Available in many routes Not habit forming Risks / problems Ceiling effect May delay healing GI toxicity Renal toxicity Hepatic toxicity Asthma, HTN warning

23 Commonly Used NSAIDs Drug Dosing Strengths mg Dosing Frequency Maximum Daily Dose Ibuprofen 100,200,400,600, to 800 mg tid to qid prn Naprosyn 250, 375, to 500 mg bid to tid 3200 mg 1500 mg Relafen 500, mg qd to bid 2000 mg Diclofenac 25,50,75 DR 100 ER 50 mg bid to tid 100 mg qd to bid Mobic 7.5, mg bid 15 mg qd Celebrex 100, to 200 mg qd to bid 200 mg 15 mg 400 mg

24 Non-Opioids Opioids/ / Skeletal Muscle Relaxants Benefits -Helps muscle spasm/tension. -Helps pain. -Many Products available. -Not habit forming. Risks -Hepatic toxicity -Sedation -Syncope -Hypotension -Anticholinergic effects

25 Commonly USED SMRs Drug Dosing Strengths mg Dosing Frequency Maximum Daily Dose. Robaxin 500, mg qid 8000 mg qd Baclofen 10,20 20 to 80 mg qd in divided doses. 80 mg qd Zanaflex 2,4 tablet 2,4,6 capsule 8 mg q6 to q8 prn Max 3 doses in 24h Skelaxin 800 Tid to qid prn Not defined Flexeril 5,10 5 to 10 mg tid 30 mg qd

26 Other Medications for Pain Drug Class Indication Dosing Frequency Maximum Recommend Dose Gabapentin Seizure Disorder. Other Neurologics Neuropathic Pain 300 to 1200 mg tid 3600 mg qd Lyrica Seizure Disorder, Other Neurologics, Fibromyalgia Fibromyalgia Neuropathic Pain 100 to 300 mg bid to tid 450 mg qd-fms 600 mg qd Neuropathic Pain Amitriptyline TCA Pain, chronic 0.1 mg kg qhs 150 mg qd Cymbalta Tramadol Opiods, other anlagesics Fibromyalgia, Neuropathic Pain, diabetic Musculoskeletal Pain, Chronic Acute/chronic moderate to severe pain 60 to 120 mg qd 50 to 100 mg q4 to 6 prn 60 mg qd for FMS and Musculoskeletal. 120 mg qd for Neuropathic 400 mg qd

27 Opioid Benefits: Highly effective, sometime the only effective Rx Promotes healing Improves mood Products with low or no ceiling Accumulation ~ occur Pure agonists have no known end-organ damage

28 Opioids: : Potential Problems Side effects Respiratory depression Sedation Nausea / vomiting Urinary retention Hormonal changes Sexual dysfunction Constipation Risks Addiction Physical dependence Tolerance Safety concerns (driving) Drug interactions

29 A Range of Products Weak or Mixed Opioids Codeine Propoxyphene Tramadol Pentazocine Nalbuphine Strong Opioids Hydrocodone Oxycodone Morphine Levorphanol Hydromorphone Fentanyl Oxymorphone Tapentadol

30 Commonly Used SA Opioids Drug Dosing Strengths mg Dosing Frequency Maximum Daily Dose Oxycodone Oxycodone/ Acetaminophen Aspirin Ibuprofen 5,10,15,20,30 2.5,5,7.5, to / 325 5/400 5 to 30 mg q4 prn 2.5 to 10 mg q4 to 6 prn q6 prn qd to qid prn Not defined 4 grams Acet. In 24 hr. 12 per 24 hr. 4 per 24 hr. Hydrocodone/ Acetaminophen Ibuprofen 2.5,5,7.5, to 700 mg to 10 mg q4 to 6 prn q4 to 6 h prn 4 grams Acet. in 24 hr. Max 5 qd Hydromorphone 2,4,8 2-8 mg q3 to 4 prn Not defined Morphine IR 15, mg q3 to 4 prn Not defined Nucynta 50,75, to 100 mg q4 to 6 prn Not defined

31 Long-Acting Opioids Currently Available Drug Dosing Interval Available Strengths Administration Bolus Ceiling dose KADIAN q12hr q24hr 20, 30, 50, 60, 100 mg Capsule, Sprinkle, G-Tube No AVINZA q24hr 30, 60, 90, 120 mg Capsule, Sprinkle Yes 1600 mg/day OxyContin q12hr 10, 20, 40, 80, 160 mg Tablet Yes MS Contin q8hr q12hr 15, 30, 60, 100, 200 mg Tablet No Duragesic q48 hr q72hr 12, 25, 50, 75, 100 mcg/hr Transdermal Patch No

32 Long-Acting Opioids (continued) Opana ER Q 12hr 5, 10, 20, 40 Tablet No - Exalgo Q 24 hr 8,12,16 mg Tablet No - Butrans Q week 5, 10, 20 mcg/hr Transdermal Patch No - Nucynta ER Q 12 hr 50,100,150, 200, 250 Tablet No -

33 Products to avoid (or use cautiously) DO NOT USE PLACEBOS Avoid Demerol Use Cautiously Codeine Tramadol Agonist/antagonist drugs Methadone

34 Risk Evaluation and Mitigation Strategy (REMS) Pros Address the potential problems associated with prescribing opioids (physicians, NP s, and PA s). Education on proper patient selection and tools for patient education. Paid for by Pharmaceutical manufacturers.

35 Polypharmacy For predictable/steady pain Provide estimated need in LA meds Have 10-25% of daily dose for breakthrough pain episodes One drug per class (exc. LA / SR MS) Different metabolism / excretion Different toxicity / Side effect profile Better than irrational polypharmacia

36 Descending Inhibitory Pathways Opioids Selective norepinephrine reuptake inhibitors (SNRIs( SNRIs) Selective serotonin reuptake inhibitors (SSRIs( SSRIs) Tramadol Tricyclic antidepressants Peripheral Pathways Voltage D. Na + Channels Tricyclic antidepressants Anticonvulsants Carbamazepine Oxycarbazepine Phenytoin Lamotrigine Lidcocaine ocaine Mexiletine Co-Analgesics Spinal Pathways N-type Ca ++ Channels Gabapentin Lamotrigine Levetiracetam Oxycarbazepine Carbamazepine Pregabalin NMDA receptors Dextromethorphan Ketamine Methadone

37 Questions on Pharmacology?

38 Screening of Pain Management Referrals Require referral from current treating provider, regardless of insurance plan. Require 3 to 6 months of office notes and all pertinent diagnostics pertaining to the condition. Require all notes from specialists and/or previous pain care providers. Use caution accepting self pay patients.

39 Risk Assessment for Opioid Use Pros -Protects the patient, the public, and your practice. -Helps determine most appropriate treatment protocol. -Compliance monitoring (frequency of pill counts and UDS) Cons -Difficult to find a provider to screen patients. -Assessments can be open to interpretation. -Cost can be prohibitive for patients if not covered on insurance plan. -How to chose which patients need to be screened.

40 High Risk: Likelihood of Misusing Opioid Medications. May chose to use only non-opioid opioid medications and alternate treatment modalities. If prescribing of opioids is initiated, use longer acting products, smaller quantities, frequent visits, more frequent UDS, and random pill counts. Re-screen if any signs of aberrant behaviors. Consider NA and/or AA services if needed. Consider NA and/or AA services if needed. Role of Methadone /Suboxone/ Clinics for detoxification.

41 Low Risk: Unlikely to misuse opioid medications. Set clear expectations for treatment with opioids and sign treatment agreement. UDS on day of first RX to ensure compliance with current and/or reported medication regimen and to ensure no other illicit or prescribed drugs are present. Perform random UDS and pill counts.

42 Pain Treatment Agreements Positives -Clear expectations -Informed Consent -Documentation -Patient safety -Safe Guarding Practice Negatives -Patient Perceptions about agreements -Open to interpretation. -Time and staff power needed to keep agreements up to date.

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48 Compliance Monitoring Positives Necessary to protect the patient, provider, and society. Monitors adherence to treatment protocol Negatives Cost Staffing Time Patient complaints

49 Laboratory Information Know the cut off levels for a given drug. Know which drugs are screened for on a standard panel and which need to be added. If using a commercial lab, ensure that pricing information is available for a given panel and add ons. Have a go to person to address problems or concerns.

50 Toxicology Report Examples.

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59 Multidisciplinary Pain Care Pros: Improved patient outcomes Multifaceted approach with less reliance on one modality. Decreased long term cost for insurers. Difficulties: Overhead Costs. Coordination of care incorporating multiple specialties. Patient compliance. Buy in from insurers. Support from referral sources.

60 Case Study Acute Back Pain 38 yo male construction worker injured his lower back picking up a 100 pound bag of concrete mix x 3 days ago. Reports feeling an initial burning sensation in his lower back that progressively became more problematic as his work day progressed and states it is now a constant ache. Denies a radicular component or any associated symptoms.

61 Case Study Acute (continued). Patient X has tried taking Tylenol and using ice compresses with minimal benefit. PE: 2 + lumbar paraspnial muscle tenderness and spasm noted bilaterally. No lumbar spinous process tenderness, no SI joint tenderness, negative straight leg raise while sitting and supine, ROM limited to pain in all plains of motion, stretngth is 5/5 BLEs with flexion and extension. Reflexes are 2+ patella and achilles bilaterally.

62 Case Study Acute (continued) Assessment: Lumbar strain Plan: OTC NSAIDs and course of PT with a focus on proper lifting techniques, postural exercises, and stretching, 40 pound weight restriction at work. Outcome: Patient completed PT in 4 weeks and is performing HEP at home. No longer on NSAID and is back to full duty without restrictions.

63 Case Study: Chronic Back Pain 45 yo male with a c/o back pain x 3 years s/p lifting injury at work. Reports lifting a heavy object in a forward flexed position when he felt a popping sensation in his lower back and pain down into his RLE. Initially Presented to occupational health and was referred for a course of PT, given a medrol dose pak,, and flexeril for his pain, with poor response and has been on light duty since the injury.

64 Chronic Pain Case (continued) MRI of Lumbar spine revealed an L4-5 HNP with NF narrowing on the right. Patient did not want surgery or injections therefore was put on Percocet per PCP to manage his symptoms medically. Pain became more problematic and medications were becoming less effective. PCP referred for Pain Management Evaluation.

65 Chronic Pain Case (continued) PE: Pain to palpation along lumbar paraspinal musculature bilaterally, no lumbar spinous process tenderness or SI joint tenderness noted. ROM limited with forward flexion and lateral flexion to the right due to pain. SLR positive at 45 degrees on the right. Strength 4+/5 in RLE and 5/5 LLE. Reflexes wnl.. Decreased sensation to light touch along the L5 dermatomal distribution in the RLE as compared to the LLE. PE:

66 Chronic Pain Case (continued) Assessment: 1. Lumbar HNP at L4-5 5 with a radicular /neuropathic component to pain along L5 distribution. 2. Opioid dependence: using # 6 10/325 mg Percoet per day. 3. Alternate medications: May benefit from trial of Gabapentin for radicular pain. 4. Needs another course of PT for strengthening of RLE.

67 Chronic Pain Case (continued) Plan: 1. Obtain EMG of RLE to R/O a radiculopathy. 2. Change opioid regimen to Roxicodone 15 mg tid prn to eliminate long term Tylenol use, decrease frequency of dosing, and lower total daily dose of opioid. 3. Add Neurontin to medication regimen for neuropathic component. 4. Course of PT. 5. Consider interventional options if above fails

68 Chronic Pain Case (continued) Outcome Outcome: : EMG showed a slight right sided L5 radiculopathy. Neurontin was titrated to 1800 mg/day and patient was able to decrease Roxicodone frequency to bid prn,, taking at end of work day. Patient did well in PT and was able to increase his hours from 24 to 32 hours per week and his lifting capacity was increased from 10 to 25 pounds. Patient wishes to forego surgery or procedures at this time.

69 ??????? QUESTIONS & SUGGESTIONS???????