Question 1 1 pts Case Study 1 There are 5 questions associated with this Case Study. Please refer to the Case to select

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Question 1 1 Pts Case Study 1 There Are 5 Questions Associated With This Case Study Please Refer To The Case To Select 1 (255.48 KiB) Viewed 31 times

Question 1 1 pts Case Study 1 There are 5 questions associated with this Case Study. Please refer to the Case to select your answers. A 65-year-old male is admitted to the hospital with a high fever, shaking chills, nausea, and vomiting. His medical record indicates that he has a history of emphysema and has been a heavy smoker since he was a teenager. A complete blood count, differential, and chemistry profile are ordered by the physician. The CBC reveals a WBC count of 15,000/ul, with 40% bands, 46% segmented neutrophils, 11% lymphocytes, and 3% monocytes. Breathing was labored and a chest X-ray film revealed consolidation of the upper part of lung. Sputum and blood cultures were performed. Question 1 The Gram stain from the sputum revealed numerous segmented neutrophils, many gram-negative bacilli, and a few gram-positive cocci. An occasional squamous epithelial cell was seen. What can be said about this specimen? It is suitable for culture and does not seem to be contaminated. O It is unsuitable for culture and definately contaminated; it should be re-collected. Its quality cannot be determined until the specimen is plated and incubated and the growth examined. O None of the above Question 2 1 pts Question 2 Which of the following media indicate the most appropriate plating for the specimen? O 5% sheep blood agar, MacConkey agar, chocolate agar, anaerobic blood agar Chocolate agar, Bordet-Gengou, MacConkey agar, thioglycollate 5% sheep blood agar, MacConkey agar, chocolate agar, CNA O 5% sheep blood agar, MacConkey agar, anaerobic blood agar, CNA Question 3 1 pts Question 3 Examination of the plates at 24 hours of incubation reveals heavy growth of a mucoid lactose fermenter on the MacConkey plate. A few alpha hemolytic colonies are observed on the CNA plate. Which statement most likely describes these observations? The colonies on MacConkey and CNA are both pathogens. O The colonies on the MacConkey and CNA are both normal flora. The colonies on the MacConkey should be considered to be pathogenic and those on CNA nornal flora. The colonies on CNA should be considered to be pathogenic and those on MacConkey normal flora. Question 4 1 pts Question 4 Which of the following tests are most appropriate in the identification of the pathogen(s)? O Catalase, coagulase, optochin Indole, motility, decarboxylase patterns Indole, urease, deaminase o Oxidase, catalase. porphyrin Question 5 1 pts Question 5 The blood cultures were positive. What do you think a Gram stain performed on a subculture of the blood culture would reveal? Gram-positive diplococci O Gram-positive cocci in clusters O Gram-negative diplococci C Gram-negative bacilli