Synopsis
Treat acute sickle pain promptly and respectfully, identify alternative or complicated causes, titrate multimodal analgesia, and reassess function, toxicity and discharge safety.
- A vaso-occlusive episode is acute pain from microvascular obstruction and inflammation, usually in bone or marrow but potentially involving any organ.
- Pain is whatever the patient says it is; previous opioid exposure and individual care plans should inform rather than discredit the assessment.
- Use the person's analgesia plan when available, assess pain, observations and recent medicines, and deliver initial analgesia within 30 minutes of arrival.
- For severe pain, NICE supports a strong opioid by a suitable route, with paracetamol and an NSAID unless contraindicated; pethidine should not be used.
- Reassess pain, sedation and vital signs every 30 minutes until satisfactory control, then at least every four hours with adverse-effect review.
- Give oxygen only for hypoxaemia or another physiological indication, and provide fluids to correct deficit without routine overhydration that can worsen pulmonary complications.
- A chest examination and oxygen saturation are repeated because acute chest syndrome can develop after admission, opioid exposure or evolving infection.
- Fever needs cultures and prompt antimicrobial assessment; focal bone pain with persistent inflammation may be osteomyelitis rather than uncomplicated vaso-occlusion.
- Patient-controlled analgesia should be considered when repeated opioid boluses are needed, with settings informed by prior exposure and local acute-pain expertise.
- Discharge requires stable observations, manageable oral analgesia, ability to drink and mobilise as appropriate, red-flag education and a follow-up route.
Key red flags
New cough, chest pain, falling saturation, tachypnoea or fever during treatment raises acute chest syndrome and needs immediate reassessment.
Investigation priorities
Identify physiological compromise and establish an analgesia baseline.
Management branches
A person with sickle-cell disease presents with an acute painful episode.
- Record pain, respiratory and cardiovascular observations, compare with the individual care plan and screen for chest, neurological, septic, abdominal and priapism red flags.
- Give initial analgesia within 30 minutes: a strong opioid by an appropriate route for severe pain, with paracetamol and an NSAID when not contraindicated.
- Correct measured fluid deficit, give oxygen for hypoxaemia and prescribe antiemetic, laxative and safety monitoring matched to the chosen opioid.
Key medicines
Morphine sulfateFor severe pain use the individual plan or local acute-sickle protocol for rapid intravenous or subcutaneous titration, then consider patient-controlled analgesia with opioid-tolerance adjustment.Monitor sedation, respiratory rate, oxygenation, blood pressure, nausea, urinary retention and ileus; reduce or lengthen dosing in renal impairment and avoid uncoordinated duplicate routes.
ParacetamolGive 1 g orally or intravenously up to four times daily in most adults, reducing the maximum for low body weight, liver disease, malnutrition or chronic alcohol risk.Count all combination products and recent home doses; intravenous administration offers no advantage when oral absorption is reliable.