What is the proper technique for obtaining a blood specimen from a central venous line?

Correct Answer: A

Rationale: The correct technique for obtaining a blood specimen from a central venous line is to use sterile gloves and discard the first 10 mL of blood. This practice helps ensure that the blood sample collected is not contaminated. Choice B is incorrect because flushing the line with heparin before drawing the specimen can contaminate the sample. Choice C is incorrect as administering heparin before drawing the specimen can affect the accuracy of the blood sample. Choice D is incorrect as using non-sterile gloves increases the risk of contamination, which is not recommended when obtaining a blood specimen from a central venous line.

Correct Answer: B

Rationale: To administer 10 mg of metoclopramide, the nurse should administer 2 mL (10 mg / 5 mg per mL). Therefore, the correct answer is 2 mL. Choice A (1 mL) is incorrect because it would only deliver 5 mg of metoclopramide, which is half the required dose. Choice C (3 mL) and D (4 mL) are incorrect as they would provide more than the required dose of 10 mg.

Correct Answer: A

Rationale: Administering oxygen is crucial in managing a patient experiencing respiratory distress. Oxygen therapy helps to improve oxygen levels in the blood, supporting vital organ functions. While monitoring airway patency is important, administering oxygen takes precedence in ensuring the patient receives an adequate oxygen supply. Providing bronchodilators may be beneficial in certain respiratory conditions, but the immediate priority in distress is to address oxygenation. Calling for assistance is essential, but the immediate intervention to support the patient's respiratory function is administering oxygen.

Correct Answer: B

Rationale: The correct answer is B: 'Avoid drinking grapefruit juice.' Grapefruit juice can increase the risk of toxicity when taken with simvastatin. Instructing the client to avoid grapefruit juice helps prevent this interaction. Choice A is incorrect because the timing of medication administration for simvastatin is usually in the evening. Choice C is unrelated to simvastatin therapy. Choice D is not necessary for monitoring while taking simvastatin.

Correct Answer: B

Rationale: The correct action for the nurse to assist the client who is experiencing difficulty voiding after the removal of an indwelling catheter is to pour warm water over the perineum. This technique can help stimulate urination by promoting relaxation of the perineal muscles and improving blood flow to the area. Assessing for bladder distention after 4 hours (Choice A) is important but not the immediate intervention needed to assist the client in voiding. Restricting the client's oral fluid intake (Choice C) can exacerbate the issue by reducing urine production. Restricting movement for at least 12 hours (Choice D) is unnecessary and may lead to discomfort and other complications.

Correct Answer: A

Rationale: The correct answer is A: Inspection, Palpation, Percussion, Auscultation. A focused respiratory assessment should start with inspection (observing the breathing pattern), followed by palpation (feeling for abnormalities like crepitus), percussion (evaluating for dullness or hyperresonance), and auscultation (listening to lung sounds). This systematic approach helps to identify signs of respiratory distress, such as abnormal breath sounds, increased respiratory rate, use of accessory muscles, and cyanosis. Choices B, C, and D are incorrect because they do not follow the standard order and sequence of a focused respiratory assessment.

Correct Answer: A

Rationale: Using a bed exit alarm system is crucial in minimizing the risk of injury for a client with dementia. This intervention helps alert staff when the client is attempting to leave the bed, reducing the chances of falls. Raising all four side rails while the client is in bed (Choice B) can lead to restraint-related issues and is not recommended unless necessary for safety reasons. Applying a soft wrist restraint (Choice C) is generally not the first choice in managing clients with dementia due to the risk of complications and loss of mobility. Dimming the lights in the client's room (Choice D) may not directly address the risk of injury associated with dementia and may even increase the risk of falls due to poor visibility.

Correct Answer: A

Rationale: Boiled spinach is an excellent source of iron, making it a top choice for individuals with iron deficiency anemia. Spinach contains non-heme iron, which may not be absorbed as efficiently as heme iron from animal sources but is still beneficial. Raw carrots, boiled chicken, and yogurt are not as rich in iron compared to spinach. Carrots are more known for their beta-carotene content, chicken is a good source of protein but not high in iron, and yogurt does not contain significant amounts of iron.

Correct Answer: B

Rationale: The correct instruction the nurse should reinforce with the client undergoing radiation therapy is to avoid using perfumed lotions. This is essential to reduce the risk of skin irritation, as perfumed lotions can exacerbate skin reactions during radiation therapy. Applying sunscreen before going outside is generally a good practice but not specifically related to radiation therapy. Massaging the area daily is contraindicated during radiation therapy as it can further irritate the skin. Taking vitamin supplements with food is important for overall health but is not a specific instruction related to radiation therapy.