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INTRODUCTION

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HIGH ALERT

buprenorphine (byoo-pre-nor-feen)

Buprenex, Subutex

Classification

Therapeutic: opioid analgesics

Pharmacologic: opioid agonists/antagonists

Schedule III

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Indications
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IM, IV: Management of moderate to severe acute pain. SL: Treatment of opioid dependence; suppresses withdrawal symptoms in opioid detoxification.

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Action
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Binds to opiate receptors in the CNS. Alters the perception of and response to painful stimuli while producing generalized CNS depression. Has partial antagonist properties that may result in opioid withdrawal in physically dependent patients when used as an analgesic. Therapeutic Effects: IM, IV: Decreased severity of pain. SL: Suppression of withdrawal symptoms during detoxification and maintenance from heroin or other opioids. Produces a relatively mild withdrawal compared to other agents.

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Adverse Reactions/Side Effects
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CNS: confusion, dysphoria, hallucinations, sedation, dizziness, euphoria, floating feeling, headache, unusual dreams. EENT: blurred vision, diplopia, miosis (high doses). Resp: respiratory depression. CV: hypertension, hypotension, palpitations. GI: nausea, constipation, dry mouth, ileus, vomiting. GU: urinary retention. Derm: sweating, clammy feeling. Misc: physical dependence, psychologic dependence, tolerance.

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PHYSICAL THERAPY IMPLICATIONS

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Examination and Evaluation
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  • Assess symptoms of respiratory depression, including decreased respiratory rate, confusion, bluish color of the skin and mucous membranes (cyanosis), and difficult, labored breathing (dyspnea). Monitor pulse oximetry and perform pulmonary function tests (See Appendix I) to quantify suspected changes in ventilation and respiratory function. Excessive respiratory depression requires emergency care.

  • Be alert for excessive sedation or changes in mood and behavior (euphoria, dysphoria, confusion, hallucinations). Notify physician or nurse immediately if patient is unconscious or extremely difficult to arouse.

  • Use appropriate pain scales (visual analogue scales, others) to document whether this drug is successful in helping manage the patient's pain.

  • Assess blood pressure (BP) and compare to normal values (See Appendix F). Report changes in BP, either a problematic decrease in BP (hypotension) or a sustained increase in BP (hypertension).

  • Assess dizziness that might affect gait, balance, and other functional activities (See Appendix C). Report balance problems and functional limitations to the physician and nursing staff, and caution the patient and family/caregivers to guard against falls and trauma.

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Interventions
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  • Implement appropriate manual therapy techniques, physical agents, and therapeutic exercises to reduce pain and help wean patient off opioid analgesics as soon as possible.

  • Because of the risk of respiratory depression and abnormal BP responses, use caution during aerobic exercise and other forms of therapeutic exercise. Assess exercise tolerance frequently (BP, heart rate, respiratory rate, fatigue levels), and terminate exercise immediately if any untoward responses occur (See Appendix L).

  • Help patient explore other nonpharmacologic methods to reduce chronic pain, including relaxation techniques, exercise, counseling, and so forth.

  • Guard against falls and trauma (hip fractures, head injury). Implement fall-prevention strategies (See Appendix E), especially if patient exhibits sedation, ...

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