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A client has come to the orthopedic clinic for a follow-up appointment 6 weeks after fracturing his ankle. Diagnostic imaging reveals that bone union is not taking place. What factor most likely contributed to this complication?

A.

Inadequate immobilization

B.

Venous thromboembolism

C.

Inadequate vitamin D intake

D.

Bleeding at the injury site

Answer and Explanation

The Correct Answer is A

A. Inadequate immobilization: Proper immobilization is essential for fractured bones to heal correctly. Immobilization, often achieved through casts, splints, or other orthopedic devices, stabilizes the broken bone fragments, allowing them to fuse back together. If the immobilization is not sufficient or if the patient doesn't follow the prescribed immobilization protocol, there can be excessive movement at the fracture site, hindering the healing process.

B. Venous thromboembolism: Venous thromboembolism (VTE) refers to the formation of blood clots in veins, usually in the legs (deep vein thrombosis) that can travel to the lungs (pulmonary embolism). While VTE is a potential complication after a fracture, it is not a direct cause of delayed bone union.

C. Inadequate vitamin D intake: Vitamin D is essential for bone health as it helps the body absorb calcium, which is crucial for bone formation and maintenance. Inadequate vitamin D levels can weaken bones and impair the healing process, but it's not a common cause of delayed bone union unless there are severe deficiencies or underlying medical conditions.

D. Bleeding at the injury site: Bleeding at the injury site occurs immediately after the fracture and is a natural part of the body's response to injury. While excessive bleeding can lead to complications, it is not a likely cause of delayed bone union six weeks after the injury. In the early stages of healing, bleeding is replaced by the formation of a hematoma, which eventually transforms into a callus and aids in the bone healing process.
 


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Related Questions

Correct Answer is ["25"]

Explanation

To calculate the number of hours required to infuse two 1L bags of normal saline at a rate of 80 ml/hr, you can use the following formula:

Time (hours) = Total volume (ml) / Infusion rate (ml/hr)

First, calculate the total volume of normal saline to be infused:

Total volume = 2 bags x 1L/bag x 1000 ml/L = 2000 ml

Now, plug this into the formula:

Time (hours) = 2000 ml / 80 ml/hr

Time (hours) = 25 hours

So, it will take 25 hours to infuse the total amount of normal saline at a rate of 80 ml/hr, assuming no interruptions in the infusion. Rounded to the nearest whole number, it will take 25 hours.

Correct Answer is ["200"]

Explanation

To calculate the rate at which the nurse should program the pump in milliliters per hour, you can use the following formula:

Rate (mL/hour) = Volume (mL) / Time (hours)

In this case, the volume is 1,000 mL (1 liter), and the time is 5 hours. Plugging these values into the formula:

Rate (mL/hour) = 1,000 mL / 5 hours = 200 mL/hour

So, the nurse should program the pump to administer the normal saline at a rate of 200 milliliters per hour.

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