A nurse who works in a gerontology clinic is asked to examine the effectiveness of Vitamin D in improving bone mineral density among older clients. The nurse evaluates four recent studies on the topic. Which study provides the best evidence to support the use of vitamin D?
A cross-sectional study that found a strong relationship between Vitamin D intake and bone density.
A time series design study that reported that those who took Vitamin D had improved bone density.
A meta-analysis that concluded that bone density improved among individuals who took Vitamin D.
A cohort study that concluded low levels of Vitamin D were linked to decreased bone mineral density.
The Correct Answer is C
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
The correct answer is Choice A.
Choice A rationale: The nurse-manager’s process for IV insertions on a surgical unit is an example ofEvidence-based practice. Evidence-based practice (EBP) is the conscientious, explicit, and judicious use of current best evidence in making decisions about the care of individual patients. In this case, the nurse-manager is using the findings from several multi-institutional studies as the basis for their decision to require RNs to cleanse all peripheral insertion sites with both alcohol and an iodine-based cleanser before starting an IV. This practice was adopted because the studies found a statistically significant decrease in IV-related septicaemia rates for surgical clients when both alcohol and iodine were used as cleansers as compared with those who had alcohol-only cleansing prior to IV insertions. This is a clear example of using current best evidence to guide practice, which is the essence of EBP.
Choice B rationale: While standards-related processes are important in healthcare, they are not the primary focus in this scenario. Standards-related processes typically involve following established guidelines or protocols that have been set by a governing body or institution. In this case, the nurse-manager is not simply following a standard process, but is instead using evidence from research to inform their practice. Therefore, this is not the best answer.
Choice C rationale: Theory-based practice involves using nursing theories to guide care and practice. While theories can be used in conjunction with evidence-based practice, the nurse-manager in this scenario is not explicitly using a nursing theory to guide their decision-making process. Instead, they are using evidence from research studies. Therefore, this is not the best answer.
Choice D rationale: Outcome-oriented processes focus on the results or outcomes of care. While the nurse-manager is certainly interested in improving outcomes (in this case, reducing IV-related septicaemia rates), the focus in this scenario is more on the use of evidence to guide practice rather than on the outcomes themselves. Therefore, this is not the best answer.
Correct Answer is D
No explanation
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