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Pearl · 05 of 06

Febrile neutropenia: antibiotics within the hour, investigations in parallel

Treat suspected febrile neutropenia with antibiotics within the hour, before results are back.

A patient on chemotherapy with fever and a neutrophil count below 0.5 × 10⁹/L, or expected to fall below it, should receive empirical broad-spectrum antibiotics within an hour of arrival. Do not wait for the blood count if the history fits; take blood cultures and start treatment in parallel.

Risk tools such as the MASCC score help identify patients who may be suitable for oral or outpatient management, but only after the first dose has been given and the patient assessed. Give every patient on myelosuppressive treatment written instructions and a number to call with a temperature.

  • Give empirical antibiotics within one hour for suspected febrile neutropenia.
  • Take blood cultures, but do not delay antibiotics for results or the full blood count.
  • Use a validated risk score to select low-risk patients for oral or outpatient care.
  • Give patients on chemotherapy a written fever plan and contact number.

Why it matters

Delay to the first antibiotic dose is one of the few modifiable drivers of mortality in neutropenic sepsis.

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