Which is the most important step that the nurse can take to prevent the transmission of microorganisms in the hospital?
Wear gloves during any and all contact with patients.
Wash hands before and after contact with each patient.
Clean the stethoscope with an alcohol swab between patients.
Wear protective eyewear at all times.
The Correct Answer is B
Choice A reason: Gloves reduce transmission but are not sufficient alone; improper use can spread microbes. Hand washing before and after patient contact is the most effective, universal method, so this is incorrect.
Choice B reason: Hand washing before and after patient contact is the most critical step to prevent microorganism transmission, as it removes pathogens from hands, the primary vector. This is the gold standard, making it correct.
Choice C reason: Cleaning the stethoscope is important but secondary to hand washing, which addresses the most common transmission route. Hands contact patients directly, so this is incorrect as the most important step.
Choice D reason: Protective eyewear prevents specific exposures but doesn’t address general microbial spread. Hand washing is the most effective, routine prevention method, so this is incorrect for the primary step.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A reason: Large, fixed lymph nodes suggest pathology, such as malignancy or chronic infection, as they indicate adherence to surrounding tissues. In healthy adults, lymph nodes are typically small and not fixed, making this an abnormal and incorrect characteristic.
Choice B reason: Large, non-mobile lymph nodes may indicate infection or malignancy, as healthy nodes are usually small and mobile. Non-mobility suggests tissue infiltration, which is pathological, making this an incorrect description of normal lymph node characteristics.
Choice C reason: Granular texture is not a standard term for describing lymph nodes. Healthy nodes, when palpable, feel smooth and soft. Granular suggests abnormality, possibly infection or malignancy, making this an inaccurate characteristic for healthy lymph nodes.
Choice D reason: In healthy adults, lymph nodes are typically not palpable, as they are small, soft, and non-tender, blending into surrounding tissues. Palpable nodes often indicate inflammation or pathology, making this the correct description of a normal finding.
Correct Answer is C
Explanation
Choice A reason: The S2 sound is produced by the closure of aortic and pulmonic valves, not tricuspid and aortic. Tricuspid closure contributes to S1, so this is incorrect for the S2 heart sound.
Choice B reason: Mitral and tricuspid valve closure produce the S1 sound, not S2. Aortic and pulmonic valves close during diastole, creating S2, so this incorrect for the second heart sound.
Choice C reason: The S2 sound results from the closure of the aortic and pulmonic valves at the end of systole, marking diastole’s start. This is the standard mechanism, making it the correct choice for S2.
Choice D reason: Pulmonic and mitral valves don’t close simultaneously; mitral closes for S1, pulmonic for S2. Aortic and pulmonic valves form S2, so this is incorrect for the heart sound.
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