A client with neuroleptic malignant syndrome receives a prescription for dantrolene 1.5 mg/kg IV. The client weighs 132 pounds.
The label on the 250 mg vial reads, “Reconstitute with 5 mL sterile water for injection, USP. Reconstitution yields 50 mg/mL.”. How many mL should the nurse administer?
The Correct Answer is ["1.8"]
The client weighs 132 pounds. To convert pounds to kilograms, divide the weight in pounds by
2.2. So, the client’s weight in kilograms is: Step 1: 132 pounds ÷ 2.2 = 60 kg The prescription for dantrolene is 1.5 mg/kg. To find out how many milligrams the client should receive, multiply the client’s weight in kilograms by the dosage in mg/kg: Step 2: 60 kg × 1.5 mg/kg = 90 mg The vial is reconstituted to yield a concentration of 50 mg/mL. To find out how many mL the nurse should administer, divide the total dosage in milligrams by the concentration in mg/mL: Step 3: 90 mg ÷ 50 mg/mL = 1.8 mL So, the nurse should administer 1.8 mL of dantrolene.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","D","E"]
Explanation
Choice A rationale
Teaching the client how to use guided imagery can be a helpful intervention for coping with feelings related to death and dying. Guided imagery can help the client to relax, reduce stress and anxiety, and find comfort.
Choice B rationale
Instructing the client and family to reconsider end of life choices is not typically an appropriate intervention. The nurse should respect the client’s end of life choices and provide support, rather than suggesting they reconsider.
Choice C rationale
Recording the client’s desire to live is not typically an intervention used in hospice care. The focus in hospice care is on providing comfort and quality of life, rather than on prolonging life.
Choice D rationale
Encouraging the family to bring the client old photographs can be a helpful intervention. Looking at old photographs can stimulate memories and conversations, providing comfort and connection.
Choice E rationale
Encouraging the family to visit frequently can be a beneficial intervention. Frequent visits can provide the client with emotional support and companionship, which can be comforting when coping with feelings related to death and dying.
Correct Answer is A
Explanation
Choice A rationale
Heparin is an anticoagulant medication that prevents the formation of blood clots. One of the most common and serious side effects of heparin therapy is bleeding. Therefore, it is crucial for the nurse to observe for signs of bleeding, such as bruising, petechiae, hematomas, black tarry stools, hematuria, and changes in mental status. Regular laboratory monitoring of the client’s coagulation status, specifically the activated partial thromboplastin time (aPTT), is also necessary to ensure therapeutic levels of heparin without causing excessive bleeding.
Choice B rationale
While mobilization can help prevent the formation of new clots, it is not the most important intervention for a client who is already on a heparin protocol for DVT. Mobilization can potentially dislodge the existing clot, leading to a life-threatening pulmonary embolism.
Choice C rationale
Although it is important to monitor vital signs in all clients, assessing blood pressure and heart rate every 4 hours is not the most important intervention for a client on a heparin protocol.
Changes in blood pressure and heart rate are not specific to heparin therapy and do not provide direct information about the effectiveness or side effects of the medication.
Choice D rationale
Measuring each calf’s girth can help evaluate the progression of edema in the affected leg, but it is not the most important intervention for a client on a heparin protocol. While it can provide information about the local effects of the DVT, it does not address the systemic anticoagulation effects of heparin therapy.
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