Correct Answer: C

Rationale: Total Parenteral Nutrition (TPN) is a method of providing nutrition to patients who cannot or should not obtain their nutrition through regular oral intake. The primary goals of TPN include promoting weight gain, improving nutritional status, maintaining muscle mass, and establishing nitrogen balance. These goals are crucial to support the overall health and well-being of the patient receiving TPN. Enhancing the healing process is an important aspect of TPN as well, but it is not considered one of the primary goals as weight gain, nutritional status, muscle mass, and nitrogen balance are typically the immediate priorities when administering TPN.

Correct Answer: A

Rationale: The nurse should prioritize using sterile technique during the tracheostomy tube change to ensure patient safety. Tracheostomy procedures involve a direct entry into the airway, making it crucial to prevent infection and reduce the risk of complications. Sterile technique, including proper hand hygiene, wearing sterile gloves, and using sterile equipment, helps minimize the introduction of pathogens into the patient's airway, reducing the risk of infection. By maintaining a sterile field, the nurse can protect the patient from potential harm and promote a successful outcome of the tracheostomy tube change.

Correct Answer: C

Rationale: It is not important for Myra to listen to the tape recordings only when she feels motivated or productive. In a nurse-patient interaction relationship, listening to tape recordings promptly (Choice A) is crucial because it ensures that any important information or cues are not missed or forgotten. Additionally, noting voice tone and inflection (Choice B) and observing pauses (Choice D) are essential for understanding the nuances and emotions conveyed during the interaction, which can be crucial in effective communication. Listening based on motivation may lead to delays and hamper the timely analysis and understanding of the interactions. Hence, it is important for Myra to prioritize active and focused listening to the tape recordings, regardless of her current motivation levels.

Correct Answer: B

Rationale: Validity refers to the extent to which a test accurately measures what it is intended to measure. In the context of screening tests for diseases, validity is crucial in assessing whether the test can correctly distinguish between individuals who have the disease (true positives) and those who do not have the disease (true negatives). This includes the ability to minimize false positives (incorrectly identifying someone as having the disease) and false negatives (incorrectly identifying someone as not having the disease). Therefore, when assessing the ability of a screening test to distinguish correctly between persons with and without a disease, we are essentially evaluating its validity.

Correct Answer: C

Rationale: The nurse's best approach to address the patient's confusion about their medication regimen is to use a teach-back method to assess understanding and clarify any misconceptions. This method involves the nurse asking the patient to explain in their own words how they will take their medications, what each medication is for, and any potential side effects they should watch for. By using the teach-back method, the nurse can confirm the patient's comprehension and correct any misunderstandings in a supportive and non-judgmental manner. This approach promotes patient education, empowerment, and adherence to the medication regimen. Providing written instructions alone (Choice A) may not be sufficient if the patient has difficulty reading or understanding written information. Explaining the medication regimen using complex medical terminology (Choice B) can further confuse the patient, making it harder for them to grasp the information. Dismissing the patient's concerns and reassuring them that the medication is safe (Choice D) does not address the root of the issue and