tommyk
10-05-2006, 01:26 PM
Hy 2423 Lung Pathology and Micro Recent Memory…
50-year-old heavy smoker named Prince William comes to your clinic in the U.K. because of a cough, chest pain, diarrhea, fatigue, headache, and fever for 3 days. He has a noticeable amount of nonpurulent sputum. A friend of his named Prince Harry (both have the same first name) and a co-worker of his named Prince The Artist Formerly Known As are experiencing similar symptoms. All clean air-conditioning systems for a living at hotels. His temperature is 104F, blood pressure is 120/80 mm Hg, and pulse is 70/min. Rales are heard. Diffuse abdominal tenderness is present. A chest x-ray film reveals bilateral infiltrates. A Gram's stain of his sputum shows numerous neutrophils, but no organisms. A sputum culture on buffered charcoal yeast extract (BCYE) agar grows gram-negative bacilli (Most specific finding). Which of the following is the most likely pathogen?
1-Strep. pneumoniae
2-Chlamydia trachomatis
3-Legionella pneumoniae
4-Moraxella catarrhalis
5-Mycoplasma pnemoniae
6-Pneumocystis carinii
7-E coli
8-Klebsiella pnemoniae
a) Pick #3. This patient has Legionella pneumonia, which is caused by L. pneumophila, a gram-negative bacillus. It is often acquired from a contaminated water supply (air conditioning systems) and can lead to outbreaks. The major risk factors include advanced age, immunosuppression, chronic lung disease, and cigarette smoking.
50-year-old heavy smoker named Prince William comes to your clinic in the U.K. because of a cough, chest pain, diarrhea, fatigue, headache, and fever for 3 days. He has a noticeable amount of nonpurulent sputum. A friend of his named Prince Harry (both have the same first name) and a co-worker of his named Prince The Artist Formerly Known As are experiencing similar symptoms. All clean air-conditioning systems for a living at hotels. His temperature is 104F, blood pressure is 120/80 mm Hg, and pulse is 70/min. Rales are heard. Diffuse abdominal tenderness is present. A chest x-ray film reveals bilateral infiltrates. A Gram's stain of his sputum shows numerous neutrophils, but no organisms. A sputum culture on buffered charcoal yeast extract (BCYE) agar grows gram-negative bacilli (Most specific finding). Which of the following is the most likely pathogen?
1-Strep. pneumoniae
2-Chlamydia trachomatis
3-Legionella pneumoniae
4-Moraxella catarrhalis
5-Mycoplasma pnemoniae
6-Pneumocystis carinii
7-E coli
8-Klebsiella pnemoniae
a) Pick #3. This patient has Legionella pneumonia, which is caused by L. pneumophila, a gram-negative bacillus. It is often acquired from a contaminated water supply (air conditioning systems) and can lead to outbreaks. The major risk factors include advanced age, immunosuppression, chronic lung disease, and cigarette smoking.