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 B
Explanation
The correct answer is choice b. Respiratory alkalosis.
Choice A rationale:
Metabolic alkalosis occurs when there is a loss of acid or an increase in bicarbonate in the body. This can be due to vomiting, diuretic use, or excessive bicarbonate intake. It is not typically associated with hyperventilation.
Choice B rationale:
Respiratory alkalosis is caused by hyperventilation, which leads to a decrease in carbon dioxide (CO2) levels in the blood. This condition is often triggered by anxiety, fear, pain, or fever, all of which are present in this adolescent.
Choice C rationale:
Metabolic acidosis occurs when there is an accumulation of acid or a loss of bicarbonate in the body. This can be due to conditions like diabetic ketoacidosis, renal failure, or severe diarrhea. It is not typically associated with hyperventilation.
Choice D rationale:
Respiratory acidosis occurs when there is an accumulation of CO2 in the blood due to hypoventilation or impaired lung function. This condition is not consistent with hyperventilation, which reduces CO2 levels.
Correct Answer is A
Explanation
The correct answer is Choice A.
Choice A rationale: In emergencies where immediate surgery is required to save a life, implied consent is assumed if the patient is unresponsive and no family is available. Ethical and legal guidelines allow proceeding without signed consent to avoid delays that could be life-threatening.
Choice B rationale: A close friend typically does not have legal authority to provide informed consent for medical procedures unless they have been designated as a healthcare proxy. Therefore, this action would not be legally appropriate in this situation.
Choice C rationale: Seeking an emergency court order for surgery could cause delays that are detrimental to the patient's health. In life-threatening situations, implied consent is sufficient, and prompt action is necessary to save the patient's life.
Choice D rationale: Continuing to provide life support without proceeding with surgery may not be sufficient to address the life-threatening condition. Immediate surgical intervention is necessary, and implied consent allows this to be done without waiting for a guardian.
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