A 75 year-old man with a history of rheumatoid arthritis underwent a left hip replacement two...

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Biology

A 75 year-old man with a history of rheumatoid arthritis underwent a left hipreplacement two weeks ago. Initially, the wound was healing, butover the past 2-3 days, he noticed increased pain in the area,along with redness and swelling. Yesterday, he noticed a smallblister over the middle of the incision, and today that area openedup and began to drain purulent fluid. He does not have any fever orchills. Upon examination, he is well-appearing, but has difficultybearing weight on his left leg due to the pain. His temperature is100.5F, heart rate = 86 beats/min, blood pressure = 180/78,respiratory rate = 18 breaths/min. He has no oral or skin lesions,his chest sounds clear, and the cardiac exam has no murmurs, rubs,or gallops. The remainder of the exam is unremarkable except forhis left leg. There is severe pain upon rotation of his hip. Theincision is warm, erythematous, indurated, and tender. There is asmall area where the skin has split open where the purulent fluidis coming from. A joint aspirate yields 20 mL of thick, cloudyfluid
a.Give all of the possible organisms and why those organisms arepossibilities for causing the patientâ€™s symptoms.

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Answer Possible organisms 1 Staphylococcus aureus 2 Staphylococcus epidermidis 3 Streptococcus pyogenes 4 Corynebacteria 5 Salmonella 6 Pseudomonas 7 Escherichia coli 8 Bacteroids These bacteria are possible causes because they are commonly found on skin surfaces as commensals which become pathogenic after See Answer

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