Medications for Chronic Pain Management

QUESTION

A 78-year-old male patient comes to your office complaining of increased left knee pain for the past 3 to 4 months. He has had no history of recent injury. An x-ray done less than 4 months ago showed degenerative osteoarthritic changes. He has full range of motion and denies any recent swelling, pedal edema, or discoloration. He has been a long-distance runner for many years and was diagnosed with osteoarthritis of his left knee more than 10 years ago. He has decreased his weekly running, but the pain is persistent and is affecting his daily activities. He has been using over-the-counter NSAIDs on and off, but states they are no longer working and wants something “stronger.” His vital signs are all normal and he has no history of fever, chills, or rashes. He is otherwise healthy. 1. Which medications do you feel would be safe and appropriate for this patient’s chronic pain? 2. What education would you provide when prescribing pain medication for this patient?

ANSWER

Medications for Chronic Pain Management

1. Acetaminophen: Acetaminophen is often considered a first-line medication for osteoarthritis pain. It is generally safe for older adults when used at recommended doses. However, the patient should be advised not to exceed the maximum daily dose to avoid potential liver toxicity. Given the patient’s age, liver function should be monitored periodically.

2. Nonsteroidal Anti-Inflammatory Drugs (NSAIDs):Since over-the-counter NSAIDs have provided some relief in the past, it may be appropriate to consider prescription-strength NSAIDs, such as meloxicam or celecoxib. However, NSAIDs can increase the risk of gastrointestinal bleeding and cardiovascular events, especially in older adults. Therefore, the patient’s cardiovascular risk factors (e.g., hypertension) should be assessed before prescribing NSAIDs. Regular monitoring for gastrointestinal symptoms is essential.

3. Physical Therapy: Referral to physical therapy can be beneficial for patients with osteoarthritis. A physical therapist can develop an exercise program to improve joint stability and function, which may help reduce pain. This approach aligns with the goal of reducing reliance on medications.

4. Intra-Articular Corticosteroid Injections: For localized joint pain that is not responsive to oral medications, intra-articular corticosteroid injections can provide relief. A rheumatologist or orthopedic specialist can perform these injections.

5. Opioid Analgesics (as a Last Resort): Opioid analgesics should be considered only if other treatments are ineffective, and the patient’s pain significantly impairs daily function. Due to the patient’s age and potential risks associated with opioids, the lowest effective dose should be used, and close monitoring for side effects and signs of misuse is essential. A pain contract may be necessary to outline expectations and responsibilities.

Education on Pain Medication

1. Medication Education:Explain each prescribed medication, including its purpose, dosing schedule, and potential side effects. Emphasize the importance of taking medications exactly as prescribed.

2. Medication Safety: Educate the patient about the safe use of acetaminophen, highlighting the maximum daily dose and the risk of liver toxicity with excessive use.

3. NSAID Precautions: If NSAIDs are prescribed, inform the patient about potential gastrointestinal and cardiovascular risks. Advise the patient to report any signs of gastrointestinal bleeding (e.g., black, tarry stools) or cardiovascular symptoms (e.g., chest pain, shortness of breath).

4. Physical Therapy: Discuss the benefits of physical therapy in improving joint function and reducing pain. Provide information on how to access physical therapy services.

5. Intra-Articular Injections:If corticosteroid injections are recommended, explain the procedure and potential benefits. Address any concerns the patient may have about the injection.

6. Opioid Education (if necessary): If opioids are prescribed, have a thorough discussion about the potential risks, including addiction and overdose. Ensure the patient understands the importance of using opioids only as directed and not sharing them with others.

7. Pain Diary: Encourage the patient to keep a pain diary to track pain levels, medication use, and any patterns or triggers. This can help in adjusting the treatment plan as needed.

8. Follow-Up: Stress the importance of regular follow-up appointments to assess the effectiveness of the pain management plan and address any concerns or side effects.

In conclusion, managing chronic pain in an older adult with osteoarthritis requires a comprehensive approach that includes medication management, physical therapy, and patient education. It is essential to balance pain relief with potential risks associated with medications, especially in older adults, and to involve the patient in shared decision-making regarding their treatment plan. Regular monitoring and follow-up are crucial to ensuring that the chosen interventions are effective and safe for the patient.