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 ["A","D","E"]
Explanation
Since the pregnant woman is vegetarian and does not eat meat, the practical nurse (PN) should provide alternative sources of iron-rich foods. Lentils and black beans are excellent vegetarian sources of iron and can be added to soups to increase iron intake (option a).
Oatmeal is a good choice for breakfast as it is often fortified with iron (option d). This can help supplement
iron intake in the diet.
Green leafy vegetables, such as spinach, kale, and broccoli, are also rich in iron and should be increased in the client's diet (option e).
Option b, which suggests eating red meat just until the anemia is resolved, is not appropriate for a vegetarian client.
Option c, taking two prenatal vitamins with iron daily, is not necessary unless specifically advised by the healthcare provider. It is important to follow the prescribed dosage of medication and supplements as directed by the healthcare provider.
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Correct Answer is A
Explanation
Choice B rationale:
Giving the wife a straw to help facilitate the client's drinking is not the most appropriate action in this situation. The client's facial paralysis and inability to move his left side could be indicative of a possible stroke or cerebral vascular accident (CVA). Before attempting to give the client fluids, it is essential to assess his swallowing reflex to prevent aspiration and ensure safety. Using a straw may not address the underlying issue.
Choice C rationale:
Assisting the wife and carefully giving the client small sips of water without assessing the swallowing reflex can be risky. If the client has impaired swallowing, this action could lead to aspiration and further complications. Assessing the client's ability to swallow is the priority to ensure safe oral intake.
Choice D rationale:
Obtaining thickening powder before providing any more fluids is premature without first assessing the client's swallowing ability. Thickened liquids may be necessary if the client has dysphagia, but the nurse should assess the client's condition and consult with the healthcare provider before making this decision. Assessing the swallowing reflex is the first step in determining the appropriate course of action.
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