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
No explanation
Correct Answer is B
Explanation
Choice A rationale:
Tenderness is not considered a normal finding during percussion of the abdomen. Tenderness suggests an underlying issue or inflammation in the abdominal area, which requires further evaluation and investigation.
Choice B rationale:
Musical and drumlike sounds are considered normal findings during percussion of the abdomen. These sounds indicate the presence of air-filled structures like the stomach or intestines. Normal abdominal percussion sounds are tympanic, and they are characterized by a hollow, drum-like quality when the abdomen is tapped lightly. This finding suggests that there are no significant abnormalities in the abdominal area.
Choice C rationale:
Absent sounds during abdominal percussion are not considered normal and may indicate a potential problem. Absent sounds could be due to factors such as bowel obstruction or severe constipation, which require further assessment and intervention.
Choice D rationale:
Pain during abdominal percussion is not considered a normal finding. It indicates discomfort or tenderness in the abdominal area, which requires further evaluation to determine the underlying cause.
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