The interval from arrival to the first dose of antibiotic is the only variable in febrile neutropenia that a department reliably controls, and it should be under 60 minutes. Everything that commonly delays it — waiting for the full blood count to confirm the neutrophil count, waiting for a line to be accessed by the oncology team, waiting for the culture to be taken before the drug is drawn up — is avoidable with a protocol.
The patient does not have to look unwell. Neutropenic sepsis frequently presents with a temperature and nothing else, because the inflammatory signs that make a patient look septic require neutrophils to produce them. A patient sitting up and talking with a temperature of 38.2 and chemotherapy ten days ago is a medical emergency, and the normal-looking observations are a feature of the condition rather than reassurance.
Take cultures, peripheral and from any line, and give the antibiotic. If the line access will take fifteen minutes, give the first dose peripherally. Steroids and paracetamol given earlier in the day can mask the fever entirely — ask.
- Antibiotic within 60 minutes of arrival, before the blood count returns if necessary.
- Take paired peripheral and line cultures, but never let culture collection delay the first dose.
- Ask about paracetamol, NSAIDs and steroids in the preceding hours — any of them can suppress the fever.
- A single temperature of 38.3, or 38.0 sustained over an hour, is the threshold; do not wait for a second reading.
- Give every patient starting chemotherapy a written card with the temperature threshold and where to go — most of the delay happens before arrival.
Why it matters
The patient who looks well is the one whose antibiotic gets delayed, and looking well is what neutropenia does.
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