HTHSCI 2HH3 Lecture 5: Respiratory Infections Laboratory
8 Mar 2017
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Document Summary
Respiratory system consists of: upper respiratory system, lower respiratory system, a significant portal of entry for pathogens into the body, respiratory system infections are most common type. When pleura are inflamed the patient will experience pain whenever the membrane rubs against the chest wall. Inside the medical microbiology lab: what specimen is suitable for identifying pathogen responsible for scott"s pneumonia? found to be present in patient"s blood (cid:523)bacteremia(cid:524) this may affect how long a patient is treated. Sputum: sterile container with large opening should be used to collect sample. Blood cultures: should always be ordered for sick patients or patients with a fever. If bacteria are: throat swab: to identify group a streptococcus. Throat has large amount of commensal flora and with antibiotics. Also, blood agar because this will grow streptococcus pneumoniae and will show alpha hemolysis (the bacteria strep pneumoniae produces the enzyme alpha-hemolysin. When this pathogen is in contact with blood agar, alpha hemolysin produces a greenish zone.
