NHM MP Staff Nurse-2022
Applied Microbiology & Infection control
Easy
MRSA stands for:
Appeared in: NHM MP Staff Nurse-2022
Explanation
- MRSA is the acronym for Methicillin-resistant Staphylococcus aureus.
- This identifies a specific bacterium, Staphylococcus aureus, which is a common cause of skin and soft tissue infections.
- The term 'Methicillin-resistant' indicates that this strain of bacteria is not susceptible to methicillin and other related beta-lactam antibiotics.
- This resistance makes MRSA infections more challenging to treat than those caused by methicillin-sensitive strains (MSSA).
Why Other Options Were Wrong
- Option B: The 'M' in MRSA stands for Methicillin, the antibiotic to which the bacterium is resistant. 'Mediated-resistant' is not a standard medical term used in this acronym.
- Option C: The 'S' in MRSA stands for Staphylococcus, not Streptococcus. These are two different genera of gram-positive bacteria with distinct characteristics and associated infections.
- Option D: This option is incorrect for two reasons: the term 'Mediated-resistant' is incorrect, and the bacterium specified is 'Streptococcus' instead of 'Staphylococcus'.
Related Visual
Clinical Relevance
- Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain The full form and basic understanding of the medical acronym MRSA (Methicillin-resistant Staphylococcus aureus) as background academic context rather than a clinical decision trigger.
- Identifying an infection as MRSA is critical for implementing appropriate infection control measures, such as contact precautions, to prevent its spread in healthcare facilities.
- Knowledge of MRSA dictates the choice of antibiotic therapy. Standard treatments for staph infections are ineffective, and specific drugs like vancomycin are required.
- Nurses play a key role in screening patients for MRSA, collecting specimens for culture, administering the correct antibiotics, and educating patients and families on prevention.
How to Approach the Question
- This is a factual recall question that tests your knowledge of a common and important medical acronym.
- First, break down the acronym into its components: M-R-S-A.
- Analyze the options for each component. The 'SA' almost always refers to 'Staphylococcus aureus' in this context. This helps eliminate options C and D, which mention 'Streptococcus'.
- Next, consider the 'M' and 'R'. 'R' stands for 'resistant'. The 'M' refers to the specific antibiotic, which is Methicillin.
- This eliminates option B, which incorrectly uses the term 'Mediated-resistant'.
- By correctly identifying each part of the acronym, you can confidently select 'Methicillin-resistant Staphylococcus aureus'.
Concept Tested & Keywords
- Concept Tested: The full form and basic understanding of the medical acronym MRSA (Methicillin-resistant Staphylococcus aureus).
- Stem keywords: MRSA, stands for
- Lead-in keywords: BEST, MOST RELEVANT CLUE
- Negative lead-in flag: false
Question ID
Q7QcuyJzseAuEKe756pFhw
Reference Book
E6 Microbiology Essentials Sastry 4e Part 2 p. 70-72
E6 Medicine Harrison 22e Part 1 pp. 1237-1239, 1245-1247
Practise the full NHM MP Staff Nurse-2022
Attempt every question from this paper in a timed mock, then review the full solution for each one.
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