Nursing Elites

1. A nurse has been ordered to set up Buck's traction on a patient's lower extremity due to a femur fracture. Which of the following applies to Buck's traction?

• A. A weight greater than 10 lbs. should be used.
• B. The line of pull is upward at an angle.
• C. The line of pull is straight
• D. A weight greater than 20 lbs. should be used.

Correct answer: C

Rationale: The correct answer is that the line of pull is straight for Buck's traction. This type of traction is applied to maintain alignment and immobilization of fractures, typically involving the lower extremities. A straight line of pull helps to provide the necessary countertraction to keep the fractured bone in proper alignment. Choices A and D are incorrect because Buck's traction commonly uses a weight range between 5-10 lbs, and using a weight greater than 10 or 20 lbs would not be appropriate or safe. Choice B is incorrect as well since the line of pull for Buck's traction is straight, not upward at an angle.

2. A client with asthma develops respiratory acidosis. Based on this diagnosis, what should the nurse expect the client's serum potassium level to be?

• A. normal
• B. elevated
• C. low
• D. unrelated to the pH

Correct answer: B

Rationale: In respiratory acidosis, the body retains CO2, leading to increased hydrogen ion concentration and a drop in blood pH. As pH decreases, serum potassium levels increase due to the movement of potassium out of cells to compensate for the acidosis. Elevated serum potassium levels are expected in respiratory acidosis. Choice A ('normal') is incorrect because potassium levels are expected to be elevated in respiratory acidosis. Choice C ('low') is incorrect as potassium levels rise in this condition. Choice D ('unrelated to the pH') is incorrect as serum potassium levels are directly impacted by changes in pH in respiratory acidosis.

3. A mother of a newborn notices a nurse placing liquid in her baby's eyes. Which of the following is an inaccurate statement about the need for eyedrops following birth?

• A. Eyedrops following birth help reduce the risk of eye infection.
• B. Eyedrops are required by law.
• C. Eyedrops will keep the eye moist.
• D. Eyedrops are required by law every 6 hours following birth.

Correct answer: D

Rationale: The correct answer is 'Eyedrops are required by law every 6 hours following birth.' This statement is inaccurate because while laws do require the placement of eyedrops, physicians indicate a specific timeframe for their administration. Choice A is correct because eyedrops following birth do help reduce the risk of eye infection by preventing ophthalmia neonatorum. Choice B is incorrect as it implies that eyedrops are mandated solely by law, without considering medical reasons. Choice C is accurate as eyedrops do help keep the eye moist, preventing dryness and discomfort.

4. The LPN is preparing to ambulate a client post total knee replacement. Which of the following actions should the nurse perform prior to ambulating the client?

• A. Assist the client to a sitting position at the edge of the bed
• B. Have the client march in place for 30 seconds
• C. Have the client raise his arms above his head
• D. Ask the client the last time he fell

Correct answer: A

Rationale: The correct action to perform before ambulating a client post total knee replacement is to assist the client to a sitting position at the edge of the bed. This step is crucial to prevent orthostatic hypotension and ensure the client is ready to stand and walk safely. Having the client march in place or raise his arms above his head are not necessary preparations for ambulation. While knowing about the client's fall history is important for safety reasons, it is not the priority action immediately before ambulating the client.

5. Metformin (Glucophage) is administered to clients with type II diabetes mellitus. Metformin is an example of:

• A. an antihyperglycemic agent.
• B. a hypoglycemic agent.
• C. an insulin analogue.
• D. a pancreatic alpha cell stimulant

Correct answer: A

Rationale: Metformin is classified as an antihyperglycemic agent because it works by reducing hepatic glucose output and decreasing glucose absorption from the gut, thereby preventing hyperglycemia. Choice B, a hypoglycemic agent, is incorrect as hypoglycemic agents stimulate insulin production, which is not the mechanism of action of metformin. Choice C, an insulin analogue, is incorrect as metformin is not a type of insulin but a distinct medication. Choice D, a pancreatic alpha cell stimulant, is incorrect as metformin does not stimulate any pancreatic cells, but rather acts on the liver and gut to lower blood sugar levels.

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