Bacterial pneumonia causes: Difference between revisions
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|''[[Listeria monocytogenes]]'' | |''[[Listeria monocytogenes]]'' | ||
| | |''[[Chlamydophila psittaci|Chlamydia psittaci]]'' | ||
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|[[Group A streptococci]] | |[[Group A streptococci]] | ||
|''[[ | |''[[Chlamydia trachomatis|Chlamydia Trachomatis]]'' | ||
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|''[[Moraxella catarrhalis]]'' | |''[[Moraxella catarrhalis]]'' | ||
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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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|Adults (18 - 40 years) | |Adults (18 - 40 years) | ||
| | |''[[Mycoplasma pneumoniae]], [[Chlamydia pneumoniae]], [[Streptococcus pneumoniae]]'' | ||
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|Adults (40 - 65 years) | |Adults (40 - 65 years) | ||
| | |[[Streptococcus pneumoniae|''Streptococcus pneumoniae'']], ''[[Haemophilus influenzae]], [[Anaerobic organism|Anaerobes]], [[Mycoplasma pneumoniae]]'' | ||
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|Elderly (>65 years) | |Elderly (>65 years) | ||
| | |[[Streptococcus pneumoniae|''Streptococcus pneumoniae'']], ''[[Haemophilus influenzae]], [[Anaerobic organism|Anaerobes]], Gram Negative Rods'' | ||
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Revision as of 07:48, 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 [1] | Atypical Pneumonia [1] |
|---|---|
| Streptococcus pneumoniae | Legionella |
| Staphylococcus aureus | Mycoplasma pneumoniae |
| Haemophilus influenzae | Chlamydia pneumoniae |
| Listeria monocytogenes | Chlamydia psittaci |
| Group A streptococci | Chlamydia Trachomatis |
| Moraxella catarrhalis | |
| 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 | Most common organism |
|---|---|
| Neonates (<4 weeks old) | Group B streptococci, Escherichia coli [3], Listeria monocytogenes [4] |
| Toddlers (2 - 4 years) | Streptococcus pneumoniae, Haemophilus influenzae, Moraxella catarrhalis [4] |
| Children (4 weeks - 18 years) | Streptococcus pneumoniae, Mycoplasma pneumoniae, Haemophilus influenzae [4] |
| Adults (18 - 40 years) | Mycoplasma pneumoniae, Chlamydia pneumoniae, Streptococcus pneumoniae |
| Adults (40 - 65 years) | Streptococcus pneumoniae, Haemophilus influenzae, Anaerobes, Mycoplasma pneumoniae |
| Elderly (>65 years) | Streptococcus pneumoniae, Haemophilus influenzae, Anaerobes, Gram Negative Rods |
References
- ↑ 1.0 1.1 "StatPearls". 2021. PMID 30020693.
- ↑ "StatPearls". 2021. PMID 30571062.
- ↑ Webber S, Wilkinson AR, Lindsell D, Hope PL, Dobson SR, Isaacs D (1990). "Neonatal pneumonia". Arch Dis Child. 65 (2): 207–11. doi:10.1136/adc.65.2.207. PMC 1792235. PMID 2107797.
- ↑ 4.0 4.1 4.2 Nguyen TK, Tran TH, Roberts CL, Graham SM, Marais BJ (2017). "Child pneumonia - focus on the Western Pacific Region". Paediatr Respir Rev. 21: 102–110. doi:10.1016/j.prrv.2016.07.004. PMC 7106312 Check
|pmc=value (help). PMID 27569107.