Influenza Pneumonia

How to Cite This Chapter: Loeb M, Kuś J, Jankowski M. Influenza Pneumonia. McMaster Textbook of Internal Medicine. Kraków: Medycyna Praktyczna. https://empendium.com/mcmtextbook/chapter/B31.II.3.11.3.2.?utm_source=nieznany&utm_medium=referral&utm_campaign=social-chapter-link Accessed March 30, 2020.
Last Updated: February 20, 2016
Last Reviewed: May 19, 2019
Chapter Information

Definition and EtiologyTop

Influenza complicated by pneumonia rarely develops in otherwise healthy individuals. The risk is increased by chronic lung diseases (mainly chronic obstructive pulmonary disease), valvular heart disease, diabetes mellitus, nephrotic syndrome, immunosuppressive treatment, advanced age, and pregnancy. The same groups of patients are at high risk of infection with Streptococcus pneumoniae, which is a cause of pneumonia following initial infection with influenza.

DiagnosisTop

Diagnosis is based on clinical features (manifestations of pneumonia with concomitant rhinitis and myalgia) and onset during an influenza season. Chest radiographs reveal bilateral, symmetric, diffuse opacities. The diagnosis may be confirmed by isolating the virus from sputum, bronchial secretions, or a pharyngeal swab, or by immunologic studies.

TreatmentTop

Symptomatic treatment and antiviral drugs (see Influenza).

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