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. The 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"]
The concentration of cefazolin after reconstitution can be calculated as follows: Concentration = Total amount of drug / Total volume after reconstitution
Since the available vial contains 1 gram (1000 mg) of cefazolin and the total volume after reconstitution is 2.5 mL, we can calculate the concentration:
Concentration = 1000 mg / 2.5 mL = 400 mg/mL
Therefore, after reconstitution, the concentration of cefazolin is 400 mg/mL.
To administer a dose of 400 mg, we divide the desired dose by the concentration: Volume to administer = Desired dose / Concentration
Volume to administer = 400 mg / 400 mg/mL = 1 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
This is the best action to take for a client who experiences a sudden gush of vaginal blood and clots after a cesarean section. Massaging the fundus helps to stimulate uterine contractions and reduce bleeding. Avoiding direct pressure on the incision prevents pain and wound dehiscence.
Correct Answer is ["A","B","C","E","H"]
Explanation
To identify the potential source of the client's new-onset confusion and decreased appetite, the nurse can use the following assessment techniques:
- Ask to see the client's list of home medications: This can help identify any medications that may contribute to confusion or appetite changes.
- Determine if the client has recently lost a loved one: Emotional distress, such as grief from a recent loss, can contribute to changes in mental status and appetite.
- Measure the client's vital signs: Vital signs can provide important information about the client's overall health status and help identify any abnormalities that may be contributing to the symptoms.
- Perform a 12-lead electrocardiogram: This can help assess the client's cardiac function and detect any cardiac-related causes for the symptoms.
- Ask about the client's last bowel movement: Changes in bowel habits can sometimes be indicative of underlying issues affecting appetite and overall health.
- Measure the client's abdominal circumference: This can help assess for any abdominal distension or changes that may be related to the client's symptoms.
Collecting a sputum and urine culture and sensitivities and having the client ambulate across the room are not directly related to identifying the potential source of confusion and decreased appetite in this case.
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