Nursing Elites

1. What is the primary role of the sinoatrial (SA) node in the heart?

• A. Pacemaker of the heart
• B. Blood pressure regulation
• C. Electrical conduction delay
• D. Stimulating muscle contraction

Correct answer: A

Rationale: The correct answer is A: Pacemaker of the heart. The SA node, known as the natural pacemaker, initiates the electrical impulses that set the rhythm for the heartbeat. It is responsible for coordinating the heart's contractions by generating electrical signals at regular intervals. Choice B is incorrect as the SA node's primary function is not related to blood pressure regulation. Choice C is incorrect as the SA node does not cause electrical conduction delay but rather initiates and conducts the electrical impulses. Choice D is incorrect as the SA node does not directly stimulate muscle contraction but rather initiates the electrical events that lead to muscle contraction.

2. A full-term, 24-hour-old infant in the nursery regurgitates and suddenly turns cyanotic. Which immediate intervention should the PN implement?

• A. Stimulate the infant to cry
• B. Give oxygen by positive pressure
• C. Suction the oral and nasal passages
• D. Turn the infant onto the right side

Correct answer: C

Rationale: Suctioning the oral and nasal passages is the correct immediate intervention in this scenario. Regurgitation leading to cyanosis indicates a potential airway obstruction, which requires prompt action to clear. Stimulating the infant to cry (Choice A) may not address the underlying issue of airway obstruction. Giving oxygen by positive pressure (Choice B) can be beneficial, but clearing the airway obstruction takes precedence. Turning the infant onto the right side (Choice D) does not directly address the need to clear the airway.

3. A client has a prescription for a transcutaneous electrical nerve stimulator (TENS) unit for pain management during the postoperative period following a lumbar laminectomy. Which information should the PN reinforce about the action of the adjuvant pain modality?

• A. The discharge of electricity will distract the client's focus from the pain.
• B. An infusion of medication into the spinal canal will block pain perception.
• C. Pain perception in the cerebral cortex is dulled by the unit's discharge of an electrical stimulus.
• D. A mild electrical stimulus on the skin surface closes the gates of nerve conduction for severe pain.

Correct answer: D

Rationale: The TENS unit works by providing a mild electrical stimulus to the skin, which helps to 'close the gate' on pain signals, reducing the perception of pain. Choice A is incorrect because distraction is not the primary mechanism of action for TENS. Choice B is incorrect as it describes a different method of pain management involving medication infusion into the spinal canal. Choice C is incorrect as it inaccurately describes the location of pain perception modulation by the TENS unit.

4. The PN is reviewing care instructions with a client who has diabetic retinopathy and is experiencing glare around lights. What should the PN reinforce with the client?

• A. Cover eyes with moist, cool compresses to reduce glare
• B. Make adjustments to personal schedule to avoid driving at night
• C. Exert pressure on the inner canthus when tearing occurs
• D. Apply an eye shield at bedtime after instilling eye drops

Correct answer: B

Rationale: The correct answer is B. Avoiding driving at night is recommended for clients experiencing glare around lights due to diabetic retinopathy. This can help reduce the risk of accidents and visual discomfort. Making adjustments to the personal schedule to avoid nighttime driving is a practical approach to manage the glare. Choices A, C, and D are incorrect because covering eyes with compresses, exerting pressure on the inner canthus, or applying an eye shield are not effective strategies for managing glare associated with diabetic retinopathy.

5. A 12-year-old child is receiving a blood transfusion via an infusion pump and begins to complain of 'itchy' skin 15 minutes after the unit of blood is started. The child appears flushed. What action should the nurse take first?

• A. Apply lotion to the skin
• B. Stop the transfusion
• C. Inspect the infusion site
• D. Obtain the vital signs

Correct answer: B

Rationale: Stopping the transfusion immediately is crucial when signs of a transfusion reaction, such as itching and flushing, occur. This action is taken to prevent further exposure to the potentially harmful transfused blood. Applying lotion to the skin, inspecting the infusion site, or obtaining vital signs can be important but are secondary to stopping the transfusion to ensure the safety of the child. Applying lotion may not address the underlying issue of a possible transfusion reaction. Inspecting the infusion site and obtaining vital signs can be done after stopping the transfusion, as patient safety is the top priority in this situation.

Similar Questions