A nurse is preparing to administer lidocaine 50 mg IV bolus.
Available is lidocaine 200 mg/mL. How many mL should the nurse administer per dose? rounded off to the nearest hundredth

Step 1: Identify the amount of lidocaine required, which is50 mg.

Step 2: Identify the concentration of available lidocaine, which is200 mg/mL.

Step 3: Calculate the volume of lidocaine to be administered using the formula:

Volume (mL) = Amount (mg) ÷ Concentration (mg/mL)

So, the calculation is:

Volume (mL) = 50 mg ÷ 200 mg/mL = 0.25 mL

Therefore, the nurse should administer0.25 mLof lidocaine per dose. This is the final answer and it is rounded off to the nearest hundredth as required.

Choice A rationale:

Systematic reviews are considered Level I evidence in the hierarchy of evidence in evidence-based practice (EBP). Systematic reviews involve the rigorous and comprehensive synthesis of multiple research studies on a specific topic. This approach minimizes bias and provides the highest level of evidence for making clinical decisions. Systematic reviews typically follow a structured methodology and offer a critical analysis of the existing literature, making them a strong foundation for EBP.

Choice B rationale:

Credible websites are not considered Level I evidence. While some websites may contain reliable information, they vary in quality, and the credibility of the source must be carefully assessed. Relying solely on websites is not the most robust approach in EBP, as it lacks the rigorous systematic review and critical appraisal process of Level I evidence.

Choice C rationale:

Expert opinions are not considered Level I evidence. While expert opinions can be valuable, they are often based on individual experiences and interpretations rather than systematic research. Expert opinions are generally considered lower in the hierarchy of evidence compared to systematic reviews and other forms of research evidence.

Choice D rationale:

Qualitative studies are not considered Level I evidence. Qualitative studies provide valuable insights into the experiences, perceptions, and meanings associated with a particular phenomenon. However, they are typically ranked lower in the hierarchy of evidence compared to systematic reviews and quantitative research studies. Qualitative studies are more appropriate for addressing research questions related to subjective experiences and understanding the "why" and "how" of a phenomenon.