The healthcare provider prescribes dalteparin 200 units/kg subcutaneously once day for a client who weighs 154 pounds. The medication is available in 25,000 units/mL vial. How many mL should the nurse administer? (Enter numerical value only. If rounding is required, round to the nearest tenth.)
The Correct Answer is ["0.6"]
Calculation:
- Convert the client's weight from pounds (lb) to kilograms (kg).
The client's weight is 154 lb.
Client weight (kg) = 154 lb/2.2 lb/kg
= 70 kg.
- Calculate the total dose to be administered (units).
The ordered dose is 200 units/kg.
Total dose (units) = 200 units/kg×70 kg
= 14,000 units.
- Calculate the volume to administer in milliliters (mL).
Available concentration is 25,000 units/mL.
Volume (mL) = Total dose (units)/Available concentration (units/mL)
= 14,000 units/25,000 units/mL
= 0.56 mL.
- Round the answer to the nearest tenth.
= 0.6 mL.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is {"A":{"answers":"B"},"B":{"answers":"A"},"C":{"answers":"A"},"D":{"answers":"A"},"E":{"answers":"B,B"},"F":{"answers":"B"},"G":{"answers":"A,B"}}
Explanation
• Chest pain: Blood clot embolism, especially pulmonary embolism, typically causes sudden chest pain due to obstruction of the pulmonary arteries. Fat embolism rarely causes chest pain as the primary symptom, though hypoxia may lead to discomfort. Chest pain is therefore more indicative of thrombotic embolism.
• Petechiae: Petechiae on the neck, upper chest, and conjunctiva are hallmark signs of fat embolism. They result from occlusion of dermal capillaries by fat globules and platelet aggregation. Blood clot embolism does not usually cause petechiae.
• Origin typically long bone fracture: Fat emboli commonly originate from fractures of long bones such as the femur, tibia, or pelvis. Trauma forces fat from the bone marrow into the bloodstream, creating emboli. Blood clot emboli generally do not arise from bone fractures.
• Altered mental status: Fat embolism can impair cerebral oxygenation, leading to confusion, lethargy, or agitation. This neurological involvement is a distinguishing feature of fat embolism. Blood clot embolism rarely affects mental status unless there is severe hypoxia.
• Dyspnea: Dyspnea occurs in both fat and blood clot embolism due to impaired oxygen exchange in the lungs. In fat embolism, hypoxia may develop gradually, while blood clot embolism often causes sudden shortness of breath. Both conditions require prompt respiratory support.
• Origin typically deep vein thrombosis: Blood clot emboli usually originate from deep veins in the legs or pelvis and travel to the lungs. Fat emboli are not associated with venous thrombi. Identifying the source helps differentiate between the two embolism types.
• Tachycardia: Tachycardia is a compensatory response to hypoxia or stress in both fat and blood clot embolism. It helps maintain oxygen delivery to vital organs. While nonspecific, its presence supports the need for urgent intervention in either condition.
Correct Answer is ["18"]
Explanation
Calculation:
- Convert the client's weight from pounds (lb) to kilograms (kg).
The client's weight is 220 lb.
Client weight (kg) = 220lb/2.2lb/kg
= 100kg.
- Calculate the total heparin dose to be administered per hour (units/hr).
The ordered rate is 18 units/kg/hour.
Total dose rate (units/hr) = 18units/kg/hour×100kg
= 1800units/hr.
- Determine the concentration of the available solution (units/mL).
Available solution is 25,000units in 250mL.
Concentration (units/mL) = 25,000units/250mL
= 100units/mL.
- Calculate the infusion rate in milliliters per hour (mL/hr).
Infusion rate (mL/hr) = Totaldoserate(units/hr)/Concentration(units/mL)
= 1800units/hr/100units/mL
= 18mL/hr.
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.
