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Old 10-31-2012
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Arrow Billy Step 1 Questions # 66

Methicillin-resistant S. aureus (MRSA) was isolated from 7 patients in a 14-bed intensive care unit. All patients were isolated and the unit closed to any more admissions. Which one of the following reasons best explains these rigorous methods to control MRSA?


a. MRSA is inherently more virulent than other staphylococci.
b. The alternative for treatment of MRSA is vancomycin, an expensive and potentiallytoxic antibiotic.
c. MRSA causes toxic shock syndrome.
d. MRSA spreads more rapidly from patient to patient than antibiotic susceptible staphylococci do.
e. MRSA is resistant to penicillin.
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Old 10-31-2012
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i think D....but not sure

thanks
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Old 10-31-2012
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nice question

Im guessing its B...
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  #4  
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Default my answer :)

b. The alternative for treatment of MRSA is vancomycin, an expensive and potentiallytoxic antibiotic.
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my answer is " B
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Default my asnwer B

yep is B, It`s a uworld Qs
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I go with d
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Old 11-01-2012
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Correct Answer B is correct

Oxacillin- and methicillinresistantS. aureus (MRSA) has been rapidly increasing in incidence. MRSA and methicillin-sensitive S. aureus (MSSA) coexist in heterologous populations. Treatment of a patient harboring this heterologous population may provide a selective environment for the MRSA. Prior to changing therapy,the susceptibility of the isolate should be determined. Vancomycin has often been used effectively for MRSA, but it is expensive and nephrotoxic. There is no evidence that MRSA is any more virulent or invasive than susceptible strains.
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