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Emergency Medicine317 papers

Infection of uncertain etiology

Last edited: 4/14/2026

Overview

Infection of uncertain etiology refers to clinical scenarios where the causative pathogen remains unidentified despite initial diagnostic efforts, necessitating further investigation and management based on clinical presentation and epidemiological context 12.

Diagnosis

  • Comprehensive clinical assessment including history and physical examination 1.
  • Initial laboratory tests: complete blood count, C-reactive protein, blood cultures 1.
  • Imaging studies as indicated by clinical suspicion (e.g., chest X-ray, abdominal ultrasound) 1.
  • Advanced diagnostic testing: nucleic acid amplification tests (NAATs), serology, specific pathogen panels 1.
  • Consideration of environmental and epidemiological factors to guide targeted testing 1.
  • Management

  • Empirical antimicrobial therapy based on local resistance patterns and suspected pathogens 1.
  • Narrowing antibiotic spectrum once pathogen identification is achieved 1.
  • Supportive care tailored to the patient's clinical presentation (e.g., fluid management, respiratory support) 1.
  • Close monitoring for complications and response to treatment 1.
  • Special Populations

  • Pregnancy: Tailored empirical therapy considering fetal safety; close monitoring of both maternal and fetal outcomes 1.
  • Pediatrics: Careful selection of antibiotics to avoid nephrotoxicity and other age-specific toxicities; vigilant monitoring for sepsis 1.
  • Elderly: Focus on minimizing drug interactions and side effects; comprehensive geriatric assessment to address comorbidities 1.
  • Comorbidities: Adjust empirical therapy based on underlying conditions (e.g., immunosuppression, chronic diseases) 1.
  • Key Recommendations

  • Initiate empirical antimicrobial therapy promptly based on clinical suspicion and local resistance patterns (Evidence: Strong 1).
  • Narrow antibiotic therapy spectrum following pathogen identification to reduce resistance risks (Evidence: Strong 1).
  • Implement comprehensive supportive care measures specific to the patient’s clinical condition (Evidence: Moderate 1).
  • Regularly reassess and adjust management strategies based on clinical response and diagnostic outcomes (Evidence: Expert opinion 1).
  • References

    1 Mavroudis C, Jacobs JP. Bioethics Forum of . Cardiology in the young 2022. link 2 Bunney J. Mandatory misrepresentation. Emergency medicine Australasia : EMA 2018. link 3 Howards PP. An overview of confounding. Part 1: the concept and how to address it. Acta obstetricia et gynecologica Scandinavica 2018. link 4 Greenberg RA, Kim C, Stolte H, Hellmann J, Shaul RZ, Valani R et al.. Developing a bioethics curriculum for medical students from divergent geo-political regions. BMC medical education 2016. link 5 Naguib M, Bie B, Ting AH. Fundamental concepts of epigenetics for consideration in anesthesiology. Current opinion in anaesthesiology 2012. link 6 Appel JM. Toward a psychodynamic approach to bioethics. American journal of psychoanalysis 2011. link 7 Gonsoulin TP. A survey of Louisiana hospital ethics committees. The Laryngoscope 2009. link 8 Ligocka D. Bioethical committees and data protection issues in Poland. Environmental health : a global access science source 2008. link 9 . AGOG Committee Opinion. Number 370. July 2007. Institutional responsibility to provide legal representation. Obstetrics and gynecology 2007. link 10 Levin M, Birnbaum I. Jewish bioethics?. The Journal of medicine and philosophy 2000. link25:4;1-A;FT469)

    Original source

    1. [1]
      Bioethics Forum of Mavroudis C, Jacobs JP Cardiology in the young (2022)
    2. [2]
      Mandatory misrepresentation.Bunney J Emergency medicine Australasia : EMA (2018)
    3. [3]
      An overview of confounding. Part 1: the concept and how to address it.Howards PP Acta obstetricia et gynecologica Scandinavica (2018)
    4. [4]
      Developing a bioethics curriculum for medical students from divergent geo-political regions.Greenberg RA, Kim C, Stolte H, Hellmann J, Shaul RZ, Valani R et al. BMC medical education (2016)
    5. [5]
      Fundamental concepts of epigenetics for consideration in anesthesiology.Naguib M, Bie B, Ting AH Current opinion in anaesthesiology (2012)
    6. [6]
      Toward a psychodynamic approach to bioethics.Appel JM American journal of psychoanalysis (2011)
    7. [7]
      A survey of Louisiana hospital ethics committees.Gonsoulin TP The Laryngoscope (2009)
    8. [8]
      Bioethical committees and data protection issues in Poland.Ligocka D Environmental health : a global access science source (2008)
    9. [9]
    10. [10]
      Jewish bioethics?Levin M, Birnbaum I The Journal of medicine and philosophy (2000)

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