Antibiotic-induced fever in orthopaedic patients-a diagnostic challenge

Kirsten Labbus1, Jana Karina Junkmann1, Carsten Perka1

  • 1Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Center for Musculoskeletal Surgery (CMSC), Charitéplatz 1, D-10117, Berlin, Germany.

Abstract

Insights

Antibiotic-induced fever in patients with musculoskeletal infections is often misdiagnosed as a new infection. Promptly recognizing this complication by monitoring for leukopenia and good general condition can prevent unnecessary treatments.

Area of Science:

  • Orthopedics
  • Infectious Diseases
  • Pharmacology

Background:

  • Antibiotic-induced fever is an underrecognized complication that can mimic new infections in patients undergoing treatment for musculoskeletal infections.
  • Misdiagnosis can lead to prolonged and unnecessary antibiotic courses, increasing healthcare costs and the risk of antimicrobial resistance.

Purpose of the Study:

  • To describe the characteristics, diagnostic approach, and outcomes of antibiotic-induced fever in patients treated for musculoskeletal infections.
  • To raise awareness among clinicians regarding this potential adverse drug reaction.

Main Methods:

  • Retrospective review of patients treated for musculoskeletal infections between 2014 and 2017.
  • Diagnosis of antibiotic-induced fever based on specific criteria: temperature >38.0°C, >3 days of intravenous antibiotics, exclusion of other causes, and fever resolution after antibiotic discontinuation.

Main Results:

  • Eleven patients (median age 51 years) were included, with fever developing after a median of 20 days of antibiotic therapy.
  • Beta-lactam antibiotics were the most common culprits (n=9). Key indicators included leukopenia (n=9) and elevated C-reactive protein (n=10).
  • Fever resolved within a median of one day after discontinuing the suspected antibiotic.

Conclusions:

  • Antibiotics should be considered a potential cause of fever in orthopedic patients, especially when signs of new infection are absent.
  • Key indicators for antibiotic-induced fever include a good general condition despite high temperature and progressive leukopenia.
  • Discontinuation or changing the antibiotic leads to rapid fever resolution, avoiding unnecessary diagnostic procedures and treatments.

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