Haemophilus Influenzae Pneumonia

Aka: Haemophilus Influenzae Pneumonia, H. Influenzae Pneumonia

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II. Epidemiology

  1. Nontypeable Hib (NTHi) is the second most common cause of Community Acquired Pneumonia (behind Pneumococcus)
  2. NTHi Pneumonia frequently complicates Chronic Bronchitis (Non-Typeable Haemophilus Influenzae)

III. Pathophysiology

  1. See Haemophilus Influenzae
  2. Typically caused by nontypeable Haemophilus Influenzae (NTHi)

IV. Risk Factors

  1. Chronic lung disease (e.g. COPD, Chronic Bronchitis, Bronchiectasis)
  2. Chronic Liver Disease
  3. Alcohol Use Disorder
  4. Elderly patients

V. Findings: Symptoms and Signs

  1. See Bacterial Pneumonia
  2. Similar presentation to Pneumococcal Pneumonia
    1. Productive, Purulent Sputum is common
    2. Less severe course than Pneumococcal Pneumonia

VI. Labs

  1. Gram Stain
    1. Pleomorphic, facultatively anaerobic Gram Negative Rods (coccobacilli)

VII. Management: Antibiotics

  1. See Haemophilus Influenzae
  2. See Pneumonia Management

VIII. Prevention

  1. See Haemophilus influenzae B Vaccine (Hib Vaccine)

IX. References

  1. Forstner (2016) J Infect 72(5):554-63 +PMID: 26940505 [PubMed]
  2. Shoar (2021) Open Forum Infect Dis 8(4):ofaa622 +PMID: 33855100 [PubMed]

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Related Studies

Ontology: Haemophilus influenzae pneumonia (C0276026)

Concepts Disease or Syndrome (T047)
ICD9 482.2
ICD10 J14
SnomedCT 70036007
English Haemophilus influenz pneumonia, Hemophilus influenz pneumonia, Hemophilus influenzae pneumonia, Pneumonia due to Haemophilus influenzae, Pneumonia due to Hemophilus influenzae, pneumonia due to Haemophilus influenzae (diagnosis), pneumonia due to Haemophilus influenzae, Pneumonia due to Haemophilus influenzae (H. influenzae), Pneumonia due to Hemophilus Influenzae (H. influenzae), Haemophilus influenza pneumonia, Hemophilus influenza pneumonia, H.influenzae pneumonia, haemophilus influenza pneumonia, haemophilus influenzae pneumonia, Haemophilus influenzae pneumonia (disorder), Haemophilus influenzae; pneumonia, Hemophilus influenzae; pneumonia, pneumonia; Haemophilus influenzae, pneumonia; Hemophilus influenzae, Haemophilus influenzae pneumonia, Pneumonia due to Hemophilus influenzae [H. influenzae], Pneumonia due to H. influenzae
Dutch pneumonie door Haemophilus influenzae (H. influenzae), Haemophilus influenza-pneumonie, Haemophilus influenzae; pneumonie, pneumonie; Haemophilus influenzae, Pneumonie door Haemophilus influenzae
French Pneumonie à Haemophilus influenzae, Pneumonie à Hemophilus Influenzae (H. influenzae), Pneumonie à Haemophilus influenzae (H. influenzae), Pneumonie à Haemophilus influenza
German Pneumonie durch Haemophilus influenzae (H. influenzae), Haemophilus influenza-Pneumonie, Pneumonie durch Haemophilus influenzae
Italian Polmonite da Haemophilus influenzae, Polmonite da Haemophilus influenzae (H. influenzae)
Portuguese Pneumonia por Hemophilus influenzae (H. influenzae), Pneumonia a Hemophilus influenza, Pneumonia por Haemophilus influenzae
Spanish Neumonía por Hemophilus influenzae, Neumonía por Hemophilus influenzae (H. influenzae), neumonía por Haemophilus influenzae (trastorno), neumonía por Haemophilus influenzae
Japanese インフルエンザ菌性肺炎, ｲﾝﾌﾙｴﾝｻﾞｷﾝｾｲﾊｲｴﾝ
Czech Pneumonie vyvolaná Haemophilus influenzae, Pneumonie vyvolaná Haemophilus influenzae (H.influenzae)
Korean 헤모필루스 인플루엔자에 의한 폐렴
Hungarian Haemophilus influenzae pneumonia, Haemophilus influenzae által okozott pneumonia (H. influenzae), Haemophilus influenzae okozta pneumonia (H. influenzae)
Derived from the NIH UMLS (Unified Medical Language System)

Related Topics in Bacterial Infections

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