Pain Assessment

Pain Assessment as the Cornerstone of Symptom Management

Pain assessment is the cornerstone of effective symptom management in hospice and palliative care. Unlike acute care settings where pain may be treated as a temporary symptom, in palliative care pain is often chronic, complex, and closely linked to the patient’s quality of life. ^[1] On exams, pain assessment questions frequently test the learner’s ability to select the appropriate tool, recognize sources of pain (nociceptive vs. neuropathic), and reassess after intervention. Mastery of pain assessment ensures that students can confidently answer questions about opioid initiation, non-pharmacologic therapies, and communication with patients at end of life.

Pain Classification and Standardized Assessment Tools

• Pain – An unpleasant sensory and emotional experience associated with actual or potential tissue damage. In palliative care, pain is defined as “whatever the experiencing person says it is, existing whenever they say it does.” ^[2]
• Nociceptive pain – Caused by damage to somatic or visceral tissues. Often described as aching, throbbing, or cramping.
• Neuropathic pain – Caused by damage to the peripheral or central nervous system. Often described as burning, shooting, or “pins and needles.” ^[1]
• Breakthrough pain – Transient flare of moderate-to-severe pain that occurs despite well-controlled baseline pain.
• Total pain – A concept in palliative care that includes physical, psychological, social, and spiritual dimensions of suffering. ^[3]
• Numeric Rating Scale (NRS) – 0–10 scale where 0 = no pain, 10 = worst possible pain.
• Verbal Descriptor Scale (VDS) – Words like “no pain,” “mild,” “moderate,” “severe.”
• Face Pain Scale (FPS) – Used for cognitively impaired or pediatric patients.
• PAINAD – Pain Assessment in Advanced Dementia scale, a behavioral tool for nonverbal patients. ^[4]
• OLDCARTS – Mnemonic for pain history: Onset, Location, Duration, Character, Aggravating factors, Relieving factors, Timing, Severity.

Standardized Clinical Workflow for Pain Assessment

Pain assessment is not a one-time event – it is an ongoing process that requires a systematic approach. The World Health Organization (WHO) analgesic ladder guides pharmacologic management but depends on accurate initial and repeat assessment. ^[5] The following steps represent the standard clinical workflow:

1. Establish rapport – Explain the purpose of the assessment and empower the patient to be the reporter.
2. Take a comprehensive pain history – Use OLDCARTS or PQRST (Provokes/Palliates, Quality, Region/Radiation, Severity, Timing). ^[2]
3. Select an appropriate pain scale – NRS for verbal adults, VDS for elderly, FPS or PAINAD for cognitively impaired.
4. Assess for neuropathic pain – Use tools like the DN4 or LANSS questionnaire if burning or shooting descriptors are present. ^[1]
5. Evaluate functional impact – How does pain affect sleep, appetite, mobility, mood?
6. Reassess after interventions – Re-evaluate pain intensity within 30–60 minutes after oral analgesics, 15–30 minutes after IV or subcutaneous administration.
7. Document all findings – Use standardized flowsheets for trending pain scores.

Clinical Presentation and Differentiation of Pain Types

Pain in palliative care is often multifactorial. The following table summarizes common findings that help differentiate pain types:

Nonverbal signs of pain (essential in patients with advanced dementia or near death) include: facial grimacing, moaning, restlessness, guarding, bracing, withdrawal, and changes in vital signs (tachycardia, hypertension, tachypnea). ^[4]

Elements of Formal Pain Assessment and Monitoring

Formal pain assessment in palliative care involves more than a single number. Components include:

• Pain intensity – Numeric rating scale (0–10), Wong-Baker FACES, or a simple verbal scale (none, mild, moderate, severe). ^[2]
• Pain quality – Use open-ended questions and pain descriptors to classify nociceptive vs. neuropathic.
• Pain location – Body diagram (paper or electronic) to map all pain sites.
• Temporal pattern – Constant? Intermittent? Breakthrough? Incident-related?
• Aggravating and relieving factors – Movement, positioning, medications, heat/ice.
• Functional and psychosocial impact – May use the Brief Pain Inventory (BPI) to assess interference with walking, mood, sleep, and enjoyment of life. ^[1]
• Barriers to reporting – Cultural beliefs, fear of addiction, reluctance to “bother” the nurse.

For nonverbal patients, the PAINAD scale (0–10) rates breathing, vocalization, facial expression, body language, and consolability. ^[4] Reassessment intervals should be documented (e.g., q4h for stable chronic pain, q1h for acute pain episodes).

Treatment Decisions and Multimodal Pain Management

Pain assessment directly drives treatment decisions. Key actions after assessment include:

• Pharmacologic management – Follow the WHO analgesic ladder: begin with non-opioids (acetaminophen, NSAIDs) for mild pain; add weak opioids (codeine, tramadol) for mild-to-moderate; use strong opioids (morphine, hydromorphone, fentanyl) for moderate-to-severe pain. ^[5]
• Adjuvant medications – Antidepressants (e.g., amitriptyline) and anticonvulsants (e.g., gabapentin, pregabalin) for neuropathic pain. ^[1]
• Nonpharmacologic interventions – Positioning, massage, heat/cold therapy, relaxation techniques, music therapy, spiritual care.
• Rescue doses – For breakthrough pain, provide a short-acting opioid dose (typically 10–20% of the total daily opioid dose). ^[3]
• Patient and family education – Explain pain as “total pain,” address fears of addiction (rare in cancer pain), teach use of pain diary, and encourage self-report.
• Interdisciplinary collaboration – Involve social workers, chaplains, and pharmacists to address psychological and spiritual suffering.

Monitoring for Opioid-Related Complications and Safety

• Respiratory depression – Risk increases with opioid initiation, dose escalation, or concurrent sedatives. Monitor sedation level and respiratory rate (below 8 breaths/min requires immediate intervention). ^[5]
• Constipation – All opioids cause constipation; always prescribe a bowel regimen (senna + docusate or osmotic laxatives). ^[1]
• Falls risk – Opioids and neuropathic agents can cause dizziness or orthostatic hypotension; implement fall precautions.
• Assessment of cognitively impaired patients – Do not rely solely on self-report; use validated behavioral scales to avoid under-treatment.
• Opioid tolerance and hyperalgesia – Differentiate from worsening disease; consult palliative specialist if paradoxical increase in pain with increasing opioid doses. ^[3]
• Chemotherapy-induced peripheral neuropathy – Taper or change neuropathic agents slowly to avoid adverse effects.

Critical Testable Content for Nursing Certification

• Know the scales: NRS for verbal adults, PAINAD for advanced dementia, FACES for children (ages 3+).
• Differentiate pain types: Nociceptive responds best to NSAIDs and opioids; neuropathic requires adjuvants (gabapentin, TCA). ^[1]
• WHO analgesic ladder – Step 1: non-opioid ± adjuvant; Step 2: weak opioid (codeine, tramadol); Step 3: strong opioid (morphine, fentanyl). Always reassess after each step.
• Breakthrough pain management – Use immediate-release opioids at 10–20% of total daily dose. ^[3]
• “Total pain” concept – Physical, psychosocial, emotional, spiritual – remember that untreated spiritual pain can worsen perceived physical pain.
• Remember the mnemonic “OLDCARTS” – Onset, Location, Duration, Character, Aggravating factors, Relieving factors, Timing, Severity.
• Cultural sensitivity – Some cultures may not rate pain on a 0–10 scale; use verbal descriptors or allow family input after patient permission.
• Double-check contraindications: NSAIDs in renal impairment or GI bleeding; avoid meperidine for chronic pain (neurotoxic metabolite normeperidine). ^[2]
• Reassessment documentation: You cannot treat what you do not reassess. Always document pain score before and after intervention.

References & Sources

1. National Comprehensive Cancer Network (NCCN). NCCN Clinical Practice Guidelines in Oncology: Adult Cancer Pain v.2.2024. Accessed July 2024. https://doi.org/10.6004/jnccn.2024.0031
2. Ignatavicius, D. D., Workman, M. L., & Rebar, C. R. (2021). Medical-Surgical Nursing: Concepts for Interprofessional Collaborative Care (10th ed.). Elsevier. ISBN: 978-0-323-6122-8.
3. Ferrell, B. R., & Coyle, N. (2018). Oxford Textbook of Palliative Nursing (5th ed.). Oxford University Press. https://doi.org/10.1093/med/9780190862374.001.0001
4. Warden, V., Hurley, A. C., & Volicer, L. (2003). Development and psychometric evaluation of the Pain Assessment in Advanced Dementia (PAINAD) scale. Journal of the American Medical Directors Association, 4(1), 9–15. https://doi.org/10.1097/01.JAM.0000043422.31640.F7
5. World Health Organization. (2018). WHO Guidelines for the Pharmacological and Radiotherapeutic Management of Cancer Pain in Adults and Adolescents. Geneva: WHO. https://apps.who.int/iris/handle/10665/279700