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Ch. 16 - Respiratory System Infections
Norman-McKay- Microbiology: Basic and Clinical Principles 2nd Edition
Norman-McKay2nd EditionMicrobiology: Basic and Clinical PrinciplesISBN: 9780137661619당신이 사용하는 게 아니라요?교과서 변경
모든 교과서Norman-McKay 2nd EditionCh. 16 - Respiratory System Infections문제 6
12장, 문제 6

Select the FALSE statement:
a. Typical pneumonia can be community acquired.
b. Streptococcus pneumoniae is one cause of typical pneumonia.
c. Viruses are the only cause of atypical pneumonia.
d. Atypical pneumonia is not usually characterized by consolidation.

검증된 단계별 안내
1
Step 1: Understand the definitions of typical and atypical pneumonia. Typical pneumonia is usually caused by bacteria such as Streptococcus pneumoniae and often presents with symptoms like consolidation visible on chest X-rays. Atypical pneumonia can be caused by a variety of pathogens including bacteria, viruses, and other microorganisms, and usually lacks the classic consolidation seen in typical pneumonia.
Step 2: Analyze statement (a): 'Typical pneumonia can be community acquired.' This is true because typical pneumonia, such as that caused by Streptococcus pneumoniae, is commonly acquired outside of hospital settings.
Step 3: Analyze statement (b): 'Streptococcus pneumoniae is one cause of typical pneumonia.' This is true since Streptococcus pneumoniae is a well-known bacterial cause of typical pneumonia.
Step 4: Analyze statement (c): 'Viruses are the only cause of atypical pneumonia.' This is false because atypical pneumonia can be caused by various pathogens including Mycoplasma pneumoniae, Chlamydophila pneumoniae, Legionella species, and viruses. Therefore, viruses are not the only cause.
Step 5: Analyze statement (d): 'Atypical pneumonia is not usually characterized by consolidation.' This is true because atypical pneumonia often presents with diffuse, patchy infiltrates rather than the lobar consolidation typical of bacterial pneumonia.

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주요 개념

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Typical vs. Atypical Pneumonia

Typical pneumonia usually presents with sudden onset, high fever, productive cough, and lung consolidation visible on X-rays. Atypical pneumonia often has a gradual onset, milder symptoms, and lacks the classic consolidation seen in typical cases. Understanding these differences helps in diagnosis and treatment.
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Common Causative Agents of Pneumonia

Typical pneumonia is commonly caused by bacteria such as Streptococcus pneumoniae, while atypical pneumonia can be caused by a variety of organisms including Mycoplasma pneumoniae, Chlamydophila pneumoniae, and some viruses. Recognizing the causative agents guides appropriate antimicrobial therapy.
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Role of Viruses in Atypical Pneumonia

Viruses can cause atypical pneumonia but are not the only cause; atypical pneumonia also results from certain bacteria. This distinction is important because treatment differs—antibiotics target bacterial causes, while viral infections may require supportive care or antivirals.
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