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History of Pain in the Surgery Ward
Taking a thorough pain history is the most important first step in the assessment of any surgical patient. The quality of this history often determines the diagnosis before any investigation is ordered. A well-structured mnemonic keeps the process systematic.
The SOCRATES Framework
SOCRATES is the standard mnemonic used across surgical and emergency settings:
| Letter | Aspect | Key Questions |
|---|
| S | Site | Where exactly is the pain? Point to it with one finger. Is there more than one site? |
| O | Onset | When did it start? Was it sudden or gradual? What were you doing at the time? |
| C | Character | What does it feel like? Sharp, stabbing, burning, dull, colicky, cramping, crushing? |
| R | Radiation | Does it spread or move anywhere (shoulder, back, groin, jaw)? |
| A | Associations | Any nausea, vomiting, fever, change in bowel/urinary habits, bleeding? |
| T | Time course | Is it constant or intermittent? Getting better, worse, or the same? Any periodicity? |
| E | Exacerbating/Relieving factors | What makes it worse (eating, movement, breathing, coughing)? What helps (rest, antacids, position)? |
| S | Severity | Score it 0-10. Does it wake you from sleep? Does it stop you from normal activities? |
Additional Dimensions for Surgical Patients
Beyond SOCRATES, the surgical context demands extra detail:
1. Progression and Pattern
- Acute vs. chronic: Did it begin suddenly (perforation, volvulus) or build gradually (obstruction, malignancy)?
- Colicky vs. constant: Colicky pain (comes and goes in waves) suggests hollow viscus obstruction (bowel, ureter, biliary); constant pain suggests peritoneal irritation or ischemia.
- Breakthrough / intermittent / background: Barash's Clinical Anesthesia classifies acute pain this way - this guides analgesic prescribing.
2. Character Clues in Surgery
- Visceral pain (dull, poorly localized, midline) - originates from hollow organs; the patient often cannot point to a precise location.
- Somatic / peritoneal pain (sharp, well-localized, worsened by movement or coughing) - indicates peritoneal involvement; this is the pain of peritonitis.
- Referred pain - right shoulder tip suggests diaphragmatic irritation (free gas, bile, blood); back pain from a pulsatile mass suggests aortic aneurysm.
- Neuropathic pain (burning, shooting, allodynia) - suggests nerve injury or post-surgical nerve entrapment.
3. Relationship to Food, Bowels, and Micturition
- Pain worse after eating + jaundice: biliary/pancreatic pathology.
- Pain relieved by eating: duodenal ulcer (classically).
- Pain worse with defecation + rectal bleeding: colorectal pathology.
- Loin-to-groin pain + haematuria: ureteric colic.
4. Analgesic History
From the clinical anesthesia literature, always document:
- Response to analgesics previously tried (including opioids, NSAIDs, paracetamol)
- Attitudes and concerns about opioids
- Oral morphine equivalent (OME) if the patient is on regular analgesia
- Response to other interventions (heat, position, physio)
5. Interference with Function
- Can the patient walk, eat, sleep, cough (important post-operatively)?
- Does pain limit respiratory effort - critical after thoracic or upper abdominal surgery, as inadequate pain control leads to retention of secretions and pneumonia.
Contextualizing to the Surgical Ward
When clerking a new surgical admission or reviewing a patient post-operatively:
Pre-operative patient:
- Duration and progression of pain (acute abdomen? chronic surgical disease?)
- Previous similar episodes
- Past surgical history (adhesions, stomas)
- Relevant medications (steroids, anticoagulants, NSAIDs - these can mask peritoneal signs)
Post-operative patient:
- Expected post-operative pain vs. new or worsening pain
- Is pain at the wound site, deep in the abdomen, or referred?
- Any new features since surgery (fever, increasing pain despite analgesia = anastomotic leak, abscess, hematoma)?
As stated in Barash's Clinical Anesthesia: "Pain is what a patient says it is" (attributed to Dr John Bonica, the father of pain medicine). The best way to begin assessing a patient's pain is to ask about it and listen to the answers.
Pain Severity Scales Used in the Ward
- Numerical Rating Scale (NRS): 0 = no pain, 10 = worst imaginable pain. Simplest and most widely used.
- Visual Analogue Scale (VAS): A 10 cm line the patient marks.
- Wong-Baker FACES Scale: For patients with communication difficulties, cognitive impairment, or children.
- Verbal Descriptor Scale: None / mild / moderate / severe.
Reassessment after each intervention is mandatory. Effective treatment of acute pain requires assessment as well as vigilant reassessment to determine if the primary goals are met. - Barash's Clinical Anesthesia, 9th Ed.
Red Flags in a Surgical Pain History
These demand immediate senior review:
- Sudden onset, severe pain ("worst pain of my life") - perforation, AAA rupture, aortic dissection
- Pain out of proportion to examination findings - mesenteric ischemia
- Pain in a post-operative patient uncontrolled by usual analgesia - early complication
- Fever + escalating pain - septic source
- New radiation of pain to the back - retroperitoneal process (pancreatitis, AAA)
- Peritonitic signs (guarding, rigidity, rebound) on examination
Summary Framework
SOCRATES + Analgesic history + Functional impact + Surgical context (pre/post-op)
A structured pain history in the surgical ward is not just about comfort - it is the primary diagnostic tool and directly guides the decision to operate, observe, or investigate further.
Sources: Barash, Cullen & Stoelting's Clinical Anesthesia 9e (pp. 4663-4664); Tintinalli's Emergency Medicine; Fischer's Mastery of Surgery 8e;
Wikipedia - SOCRATES;
Geeky Medics SOCRATES guide