Nokea
Which surfaces are replaced when a patient has a total hip replacement?
- A. The articular surfaces of the femur and the tibia
- B. The posterior surface of the patella and the tibia
- C. The acetabular cup and head of the tibia and fibula
- D. The head and neck of the femur and the acetabular cup
Correct Answer: D
Rationale: Total hip replacement involves replacing the femoral head and neck and the acetabular cup in the pelvis.
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A patient has had his hand and part of his forearm amputated due to a traumatic injury. What would be the result if he refused to have his stump wrapped continuously with an elastic bandage or wear a compression sock?
- A. The incision on the end of the stump will not heal
- B. There will be excessive bruising and swelling of the stump
- C. The stump will not heal in a shape to fit inside the prosthesis well
- D. He can wait a few weeks after surgery before wrapping the stump or wearing the compression sock
Correct Answer: B,C
Rationale: Without compression, the stump may swell excessively and heal in a shape unsuitable for a prosthesis.
A patient who has chronic lung disease is stimulated to breathe because the chemoreceptors detect:
- A. low oxygen in the blood
- B. high oxygen in the blood
- C. low carbon dioxide in the blood
- D. high carbon dioxide in the blood
Correct Answer: D
Rationale: In chronic lung disease, high carbon dioxide levels drive respiration due to desensitized oxygen chemoreceptors.
You are caring for a patient with a fresh total hip replacement. Which statement would indicate that your patient needs more teaching?
- A. I will sleep with the abductor pillow between my legs every night for several months
- B. I can cross my legs when I am sitting in a chair as long as my feet are elevated on a footstool
- C. I need to use an extension gripper to pick up anything I drop
- D. I will sit in the recliner with the back slightly reclined when I am out of bed
Correct Answer: B
Rationale: Crossing legs after a total hip replacement risks dislocation of the prosthesis, indicating a need for further teaching.
A patient is in skeletal traction for a comminuted fracture of the tibia. While giving pin care, you notice a small amount of serous drainage around each pin site. Which observation is most accurate?
- A. The drainage is a symptom of skin infection
- B. This finding is normal for skeletal traction
- C. This is an indication of pin dislocation
- D. The drainage is an indication of a bone infection
Correct Answer: B
Rationale: A small amount of serous drainage is normal around pin sites in skeletal traction, as long as there are no signs of infection.
Which is (are) true of chemical regulation of respirations?
- A. Chemoreceptors are located in the carotid and aorta and the brain
- B. The cerebellum is responsible for brain control of respirations
- C. The chemoreceptors in the brain cause an increase in the rate and depth of respirations in response to changes in blood pH
- D. If the carbon dioxide level is higher than normal in the blood, the blood becomes more acidic and the pH falls below 7.35
- E. If the oxygen level in the blood falls, this provides the stimulus to breathe in people who do not have chronic lung disease
- F. Chemoreceptors in the carotid and aorta respond to decreased oxygen in the blood and send the message to the medulla
Correct Answer: A,C,D,E,F
Rationale: These statements accurately describe the chemical regulation of respiration, involving chemoreceptors and responses to pH and oxygen levels.