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
Explanation
Choice A rationale:
History of vomiting at home for 3 days prior to surgery. Rationale: This information is relevant to the client's surgical history and may impact their current condition. It is essential to inform the receiving nurse about this history to ensure appropriate postoperative care.
Choice B rationale:
Soft abdomen, absent bowel sounds, no bleeding on dressing. Rationale: While this information is important for assessing the client's postoperative status, it is less urgent than the history of vomiting. The abdominal assessment suggests normal findings after surgery.
Choice C rationale:
Declining to take ice chips for complaints of dry mouth. Rationale: While this information indicates the client's complaint of dry mouth, it is not as critical as the history of vomiting or the assessment of surgical outcomes.
Choice D rationale:
Peripheral pulses present with full range of motion of both legs. Rationale: This information is important but primarily related to the client's vascular and neurological status. It may not be as immediately relevant as the history of vomiting in the context of a recent surgery.
Correct Answer is A
No explanation
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