A 72-year-old woman with metastatic ovarian cancer is brought to the physician by her son because she is in immense pain and cries all the time. On a 10-point scale, she rates the pain as an 8 to 9. One week ago, a decision to shift to palliative care was made after she failed to respond to 2 years of multiple chemotherapy regimens. She is now off chemotherapy drugs and has been in hospice care. Current medications include 2 mg morphine intravenously every 2 hours and 650 mg of acetaminophen every 4 to 6 hours. The son is concerned because he read online that increasing the dose of morphine would endanger her breathing. Which of the following is the most appropriate next step in management?

Counsel patient and continue same opioid dose

Change morphine to a non-opioid analgesic

Initiate palliative radiotherapy

Initiate cognitive behavioral therapy

A 25-year-old man comes to the physician for severe back pain. He describes the pain as shooting and stabbing. On a 10-point scale, he rates the pain as a 9 to 10. The pain started after he lifted a heavy box at work; he works at a supermarket and recently switched from being a cashier to a storekeeper. The patient appears to be in severe distress. Vital signs are within normal limits. On physical examination, the spine is nontender without paravertebral muscle spasms. Range of motion is normal. A straight-leg raise test is negative. After the physical examination has been completed, the patient asks for a letter to his employer attesting to his inability to work as a storekeeper. Which of the following is the most appropriate response?

I understand that you are uncomfortable, but the findings do not match the severity of your symptoms. Let's talk about the recent changes at your job.

“Yes. Since work may worsen your condition, I would prefer that you stay home a few days. I will write a letter to your employer to explain the situation.”

You say you are in severe pain. However, the physical examination findings do not suggest a physical problem that can be addressed with medications or surgery. I'd like to meet on a regular basis to see how you're doing.

The physical exam findings do not match your symptoms, which suggests a psychological problem. I would be happy to refer you to a mental health professional.

The physical exam findings suggest a psychological rather than a physical problem. But there is a good chance that we can address it with cognitive-behavioral therapy.

A 72-year-old woman is brought to the emergency department by ambulance after an unexpected fall at home 1 hour ago. She was resuscitated at the scene by paramedics before being transferred to the hospital. She has a history of ischemic heart disease and type 2 diabetes mellitus. She has not taken any sedative medications. Her GCS is 6. She is connected to a mechanical ventilator. Her medical records show that she signed a living will 5 years ago, which indicates her refusal to receive any type of cardiopulmonary resuscitation, intubation, or maintenance of life support on mechanical ventilation. Her son, who has a durable power-of-attorney for her healthcare decisions, objects to the discontinuation of mechanical ventilation and wishes that his mother be kept alive without suffering in the chance that she might recover. Which of the following is the most appropriate response to her son regarding his wishes for his mother?

“Based on her wishes, mechanical ventilation must be discontinued.”

“We will take every measure necessary to prolong her life.”

“She may be eligible for hospice care.”

“The opinion of her primary care physician must be obtained regarding further steps in management.”

“Further management decisions will be referred to the hospital’s ethics committee.”

A 67-year-old man comes to the clinic for establishment of care. He recently retired and moved to Florida with his wife. His past medical history includes hypertension, diabetes, chronic back pain, and hyperlipidemia. According to the patient, he takes lisinopril, metformin, atorvastatin, acetaminophen, and methadone. His previous doctor prescribed methadone for breakthrough pain as he has been having more severe pain episodes due to the recent move. He is currently out of his methadone and asks for a refill on the prescription. A physical examination is unremarkable except for mild lower extremity edema bilaterally and diffuse lower back pain upon palpation. What is the best initial step in the management of this patient?

Assess the patient's pain medication history

Refer the patient to a pain management clinic

Inform the patient that methadone is not the best option and do not prescribe

Encourage the patient to switch to duloxetine

Prescribe a limited dose of methadone for breakthrough back pain

A 67-year-old man comes to the physician for a follow-up examination. He has had lower back pain for several months. The pain radiates down the right leg to the foot. He has no history of any serious illness and takes no medications. His pain increases after activity. The straight leg test is positive on the right. The results of the laboratory studies show: Laboratory test Hemoglobin 14 g/d Leukocyte count 5,500/mm3 with a normal differential Platelet count 350,000/mm3 Serum Calcium 9.0 mg/dL Albumin 3.8 g/dL Urea nitrogen 14 mg/dL Creatinine 0.9 mg/dL Serum immunoelectrophoresis shows an immunoglobulin G (IgG) type monoclonal component of 40 g/L. Bone marrow plasma cells return at 20%. Skeletal survey shows no bone lesions. Magnetic resonance imaging (MRI) shows a herniated disc at the L5. Which of the following is the most appropriate next step?

Autologous stem cell transplantation

Pain management at end of life for USMLE Step 1: High-Yield Patient Safety Lessons

Pain Assessment - Gauging the Hurt

Core Principle: Pain is subjective; always believe the patient's self-report.
Standard Tools:
- Numeric Rating Scale (NRS): Patient rates pain 0-10. Preferred for verbal adults.
- Wong-Baker FACES Pain Rating Scale: For children or adults with communication barriers.
- PAINAD Scale: For advanced dementia (assesses Breathing, Vocalization, Facial Expression, Body Language, Consolability).

Pain Assessment Scales

⭐ High-Yield: In non-verbal patients, look for grimacing, moaning, restlessness, or guarding. Family input is crucial for establishing a baseline.

Pharmacologic Principles - The Right Tools

Foundation: Utilize the WHO 3-step analgesic ladder for a structured approach to pain management.
Opioid Selection:
- Morphine: Gold standard for severe pain; multiple formulations available.
- Fentanyl: Safe in renal failure; transdermal patch for stable, chronic pain.
- Hydromorphone: Potent, effective alternative to morphine.
Adjuvant Analgesics:
- Neuropathic pain: Gabapentin, pregabalin, TCAs.
- Bone pain: Corticosteroids, NSAIDs.
Side Effect Management:
- 📌 Mush & Push: Always prescribe a stimulant laxative (senna) + stool softener (docusate) for opioid-induced constipation.

⭐ The Principle of Double Effect ethically permits using high-dose opioids to relieve suffering, even if the medication unintentionally hastens death. The clinician's primary intent is crucial.

WHO 3-step analgesic ladder for pain management

Opioid Management - The Heavy Lifters

Initiation: Start with short-acting opioids (e.g., morphine, hydromorphone).
- Opioid-naïve: Morphine 2.5-5 mg PO q4h.
- Adjust based on prior opioid use and comorbidities (renal/hepatic).
Titration: For persistent pain, ↑ total daily dose by 25-50% until pain is controlled.
Breakthrough Pain: Offer a rescue dose of 10-15% of the total 24-hour baseline opioid dose, q1-2h PRN.
Side Effect Prophylaxis:
- Constipation: Universal. Start stimulant laxative (Senna) + stool softener. 📌 "Mush and Push."
- Nausea/Vomiting: Often transient. Consider antiemetics (e.g., haloperidol, metoclopramide).
- Sedation/Delirium: Usually resolves. If persistent, consider dose reduction or opioid rotation.

⭐ Principle of Double Effect: It is ethically permissible to use high-dose opioids to relieve pain, even if it may unintentionally hasten death, as the primary intention is palliation.

Opioid Equianalgesic Conversion Chart

Adjuvant Analgesics - The Helpful Sidekicks

Purpose: Enhance opioid analgesia, manage specific pain types (e.g., neuropathic), and reduce opioid-related side effects.
Neuropathic Pain:
- First-line: Gabapentinoids (Gabapentin, Pregabalin), TCAs (Amitriptyline), or SNRIs (Duloxetine).
- Consider patient comorbidities and side effect profiles.
Bone Pain / Nerve Compression:
- Corticosteroids (Dexamethasone) are effective for inflammatory or compressive pain.
Refractory Pain:
- Ketamine (NMDA antagonist) for severe, opioid-resistant pain under specialist supervision.

⭐ For neuropathic pain, gabapentinoids are often preferred over TCAs in older adults due to a more favorable side-effect profile (less anticholinergic, sedative, and cardiac effects).

Pain pathways and non-opioid analgesic sites of action

Ethical Considerations - Doctrine of Double Effect

A principle that permits an action with both a good effect (intended) and a bad effect (foreseen but unintended).
Justifies aggressive pain management (e.g., high-dose opioids) at the end of life, even if it may hasten death.
Key Conditions:
- Intent is to alleviate pain, not to cause death.
- The good effect (analgesia) outweighs the bad effect (potential respiratory depression).

⭐ The doctrine of double effect is ethically and legally distinct from euthanasia, where the primary intention is to end the patient's life.

Pain is subjective and what the patient says it is; use a validated pain scale.

Opioids are first-line for moderate-to-severe pain; morphine is the gold standard.

There is no ceiling dose for opioids in end-of-life care; titrate to pain relief.

Always prophylax for constipation with a stimulant laxative.

The Doctrine of Double Effect ethically justifies providing high-dose opioids for pain relief.

Consider adjuvant analgesics like corticosteroids for bone pain or gabapentin for neuropathic pain.

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