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 D
Explanation
The correct answer and explanation is:
d) Massage the fundus and avoid direct pressure on the cesarean incision.
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.
a) Insert an indwelling catheter to empty the bladder and contract the fundus.
This is not the first action to take for a client who experiences a sudden gush of vaginal blood and clots after a cesarean section. Inserting an indwelling catheter requires a physician's order and may cause discomfort and infection. The client may already have a catheter in place after the surgery.
b) Check fundal consistency and continue to monitor the lochial flow amount.
This is not enough to do for a client who experiences a sudden gush of vaginal blood and clots after a cesarean section. Checking fundal consistency and monitoring lochial flow are important, but they do not address the cause of bleeding or prevent further blood loss.
c) Return the client to bed and maintain bedrest until the lochial flow slows.
This is not appropriate for a client who experiences a sudden gush of vaginal blood and clots after a cesarean section. Returning the client to bed and maintaining bedrest may delay ambulation and increase the risk of thromboembolism. It also does not stop the bleeding or treat the underlying cause.

Correct Answer is ["A","C","D","E"]
Explanation
Choice A rationale:
Verapamil is a calcium channel blocker and is expected to decrease heart rate by inhibiting calcium influx into cardiac cells, particularly in the SA (sinoatrial) node, where it can slow down the heart's electrical impulses.
Choice B rationale:
Increased contractility is not an expected outcome of verapamil use. In fact, verapamil's main action is to decrease myocardial contractility, making it useful for treating conditions like angina and atrial fibrillation.
Choice C rationale:
Verapamil is known to dilate coronary arteries, which can improve blood flow to the heart muscle and relieve symptoms of angina.
Choice D rationale:
Reduced blood pressure is an expected outcome of verapamil use due to its vasodilatory effects on peripheral blood vessels. This can be beneficial in treating hypertension and angina.
Choice E rationale:
Relieved chest pain is an expected outcome of verapamil use, particularly in the case of variant angina (Prinzmetal's angina), as it helps to relax coronary arteries and reduce coronary artery spasm, which is a common cause of chest pain in this condition.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.
