Pneumonia

Published on 21/03/2015 by admin

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Last modified 21/03/2015

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Chapter 62 Pneumonia

PATHOPHYSIOLOGY

Pneumonia is an inflammation or infection of the pulmonary parenchyma. Pneumonia is attributable to one or more agents: viruses, bacteria (e.g., Mycoplasma pneumoniae, Streptococcus pneumoniae, Staphylococcus aureus), fungi, parasites, or aspirated foreign substances. The pattern of the illness depends on the following: (1) causative agent, (2) age of the child, (3) child’s reaction, (4) extent of lesions, and (5) degree of bronchial obstruction. The clinical features of viral, mycoplasmal, and other bacterial pneumonias are listed in Box 62-1.

Box 62-1 Clinical Features of Bacterial, Viral, and Mycoplasmal Pneumonia

PMNs, polymorphonuclear cells; RSV, respiratory syncytial virus.

INCIDENCE

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