Bacterial pneumonia causes: Difference between revisions
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|''[[Moraxella catarrhalis]]'' | |''[[Moraxella catarrhalis]]'' | ||
| | |''[[Chlamydia Trachomatis]]'' | ||
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|[[Anaerobic organism|Anaerobes]] and [[Aerobic organism|aerobic]] gram-negative bacteria | |[[Anaerobic organism|Anaerobes]] and [[Aerobic organism|aerobic]] gram-negative bacteria | ||
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*''[[Acinetobacter spp|Acinetobacter]]'' species | *''[[Acinetobacter spp|Acinetobacter]]'' species | ||
=== Demographics === | ===Demographics=== | ||
{| class="wikitable" | {| class="wikitable" | ||
|+ | |+ | ||
! | !Age Group/ Condition | ||
!Most common organism | !Most common organism | ||
|- | |- | ||
|Neonates (<4 weeks old) | |Neonates (<4 weeks old) | ||
|''Group B streptococci, | |''[[Group B streptococci]], [[Escherichia coli]]'' <ref name="pmid2107797">{{cite journal| author=Webber S, Wilkinson AR, Lindsell D, Hope PL, Dobson SR, Isaacs D| title=Neonatal pneumonia. | journal=Arch Dis Child | year= 1990 | volume= 65 | issue= 2 | pages= 207-11 | pmid=2107797 | doi=10.1136/adc.65.2.207 | pmc=1792235 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=2107797 }} </ref> | ||
|- | |- | ||
|Children (4 weeks - 18 years) | |Children (4 weeks - 18 years) | ||
| | |''[[Mycoplasma pneumoniae]],'' | ||
|- | |- | ||
|Adults (18 - 40 years) | |Adults (18 - 40 years) | ||
Revision as of 07:32, 3 January 2022
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Bacterial pneumonia Microchapters |
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Diagnosis |
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Treatment |
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Case Studies |
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Bacterial pneumonia causes On the Web |
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American Roentgen Ray Society Images of Bacterial pneumonia causes |
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Risk calculators and risk factors for Bacterial pneumonia causes |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Arooj Naz
Overview
Bacterial pneumonia may be due to a variety of underlying causes. The microorganisms responsible are divided into Typical and Atypical. Typical bacteria often result in a classic pneumonia whereas atypical bacteria lead to a much milder presentation often referred to as "walking pneumonia". These patients appear near normal but have extensive findings on chest x-ray.
Causes
Microorganisms
| Typical Pneumonia | Atypical Pneumonia |
|---|---|
| Streptococcus pneumoniae | Legionella |
| Staphylococcus aureus | Mycoplasma pneumoniae |
| Haemophilus influenzae | Chlamydia pneumoniae |
| Group A streptococci | Chlamydia psittaci |
| Moraxella catarrhalis | Chlamydia Trachomatis |
| Anaerobes and aerobic gram-negative bacteria |
Causes of Nosocomial and Ventilator Associated Pneumonia
- Staphylococcus aureus (MRSA)
- Streptococcus species
- Pseudomonas aeruginosa
- Escherichia coli
- Klebsiella pneumoniae
- Enterobacter species
- Acinetobacter species
Demographics
| Age Group/ Condition | Most common organism |
|---|---|
| Neonates (<4 weeks old) | Group B streptococci, Escherichia coli [3] |
| Children (4 weeks - 18 years) | Mycoplasma pneumoniae, |
| Adults (18 - 40 years) | |
| Adults (40 - 65 years) | |
| Elderly (>65 years) | |
| HIV Infected Patients |