A 68-year old patient with Alzheimer disease was brought to the emergency room by the...

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Biology

A 68-year old patient with Alzheimer disease was brought to the emergency room by the staff of a local nursing home. He presented as lethargic with a sallow complexion. He had an admission temperature of 102.4F and shortness of breath. He showed dense consolidation of the lower lobe of the left lung on physical exam. A sputum sample revealed blood and a greenish color. A smear of his sputum demonstrated no acid-fast bacteria. What is the most likely cause of this pneumonia?Streptococcus pneumoniaeBordetella pertussisMycobacterium tuberculosisPseudomonas aeruginosaMycoplasma pneumoniae

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A 68-year old patient with Alzheimer disease was brought to the emergency room by the staff of a local nursing home. He presented as lethargic with a sallow complexion. He had an admission temperature of 102.4F and shortness of breath. He showed dense consolidation of the lower lobe of the left lung on physical exam. A sputum sample revealed blood and a greenish color. A smear of his sputum demonstrated no acid-fast bacteria. What is the most likely cause of this pneumonia?Streptococcus pneumoniaeBordetella pertussisMycobacterium tuberculosisPseudomonas aeruginosaMycoplasma pneumoniae