The practical nurse (PN) is preparing cefazolin 400 mg IM for a client with a gram-positive infection. The available vial is labeled, "Cefazolin 1 gram," and the instructions for reconstitution state, for IM use, add 2 mL sterile water for injection. Total volume after reconstitution is 2.5 mL. After reconstitution, how many mL should be administered to the client? (Enter numeric value only. If rounding is required, round to the whole number, nearest tenths/hundredth).
The Correct Answer is ["1"]
This is the correct answer because the concentration of cefazolin after reconstitution is 1 gram/2.5 mL, which is equivalent to 400 mg/1 mL. Therefore, to administer 400 mg of cefazolin, the PN should draw up 1 mL of the reconstituted solution. This can be calculated using the formula:
Desired dose / Available dose = Volume to administer
400 mg / 1000 mg = x mL / 2.5 mL
x = (400 x 2.5) / 1000
x = 1 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale:
Nausea can be a significant factor contributing to decreased food intake, but it is not the most likely cause in this scenario. Xerostomia (dry mouth) and mucositis are mentioned as symptoms in the question stem. Nausea alone does not explain why the client is consuming less than their body requirements.
Choice B rationale:
Fatigue can also contribute to decreased food intake, but it is not the most likely cause in this case. While fatigue can be a side effect of cancer treatment and may lead to reduced appetite, the question specifically mentions xerostomia and mucositis as issues contributing to imbalanced nutritional intake.
Choice C rationale:
Pain when eating is the most likely cause of imbalanced nutritional intake in this scenario. The client's laryngeal cancer and the development of mucositis indicate that eating is likely painful for them. This discomfort can significantly deter the client from eating, leading to decreased nutritional intake.
Choice D rationale:
Altered taste sensation can affect food preferences, but it is not the most likely cause in this case. Pain when eating is a more direct and immediate barrier to food intake, especially in the context of mucositis and laryngeal cancer.
Correct Answer is ["1"]
Explanation
This is the correct answer because the concentration of cefazolin after reconstitution is 1 gram/2.5 mL, which is equivalent to 400 mg/1 mL. Therefore, to administer 400 mg of cefazolin, the PN should draw up 1 mL of the reconstituted solution. This can be calculated using the formula:
Desired dose / Available dose = Volume to administer
400 mg / 1000 mg = x mL / 2.5 mL
x = (400 x 2.5) / 1000
x = 1 mL
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today