PAT 20A/B Lecture Notes - Lecture 12: Bacteremia, Doxycycline, Adverse Drug Reaction
22 Mar 2016
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Document Summary
Pat20 pneumonia: deine community-acquired pneumonia (cap) Pneumonia: acute infecion of lower respiratory tract; inlammaion of lung parenchyma caused by microbial agent (bacteria, viruses, mycoplasma, fungi, parasites, various chemical agents) Types of pneumonia (can be classiied 3 ways) Bacterial pneumonia: incidence highest in winter months, risk factors: smoking, underlying lung disease (copd), old age, impaired swallowing, altered consciousness, immunosuppressed ppl, alcoholism, commonly causaive organisms: s. pneumoniae (streptococcus), legionella, mycoplasma, oral anaerobic inluenza virus. Hospital acquired pneumonia: occurs 48 hours ater hospital admission: bacterial can then be further classed as gram-posiive, microorganisms diferent from those in cap or gram-negaive (based on staining, streptococcus pneumoniae. Iniiates immune response complement & producion of anibodies. Inlammatory cytokines & cells released alveolar edema. Viral pneumonia: usually mild, can lead to secondary bacterial infecion, new or atypical forms (h1n1, avian inluenza, sars) Parial or full lobe (lobar pneumonia) > involves lobe/secion of lung. Intersiial pneumonia > afects intersiial luid between alveoli.
