Correct Answer: C

Rationale: An increasing pulse rate can be an early sign of poor oxygenation as the body tries to compensate. Abnormal breath sounds (choice A) can indicate respiratory issues, but they may not always be an early sign of poor oxygenation. Cyanosis of the lips (choice B) is a late sign of inadequate oxygenation. A pulse oximeter reading of 92% (choice D) indicates mild hypoxemia but may not be considered an early indication of poor oxygenation.

Correct Answer: A

Rationale: Performing hand hygiene is the initial step a healthcare professional should take when preparing to provide tracheostomy care. This step is crucial to prevent the transmission of pathogens and reduce the risk of infection to the client. By cleansing the hands, the healthcare professional ensures patient safety. While gathering equipment, explaining the procedure, and assessing the client are essential components of tracheostomy care, they should occur after performing hand hygiene to maintain aseptic technique and minimize the risk of introducing harmful microorganisms to the client.

Correct Answer: A

Rationale: The correct answer is to use a picture board with common needs. Clients with expressive aphasia have difficulty speaking but can often understand and use visual aids effectively. Using a picture board helps the client communicate basic needs more easily. Encouraging the client to speak slowly (choice B) may not be effective as the issue lies with expressive language, not speed. Writing down what the client says (choice C) may not always be possible or helpful for immediate communication as it does not address the communication barrier directly. Using hand gestures (choice D) may not be as clear or universally understood as a picture board, which can cause confusion and misinterpretation.

Correct Answer: C

Rationale: A routine prescription, such as lisinopril 10 mg PO once daily, is administered on a regular schedule with or without a termination date. It is a standard, ongoing prescription for maintenance therapy. Choice A, 'Single,' would typically refer to a one-time prescription. Choice B, 'Stat,' is used for prescriptions that are needed immediately or in emergency situations. Choice D, 'Now,' is not a common prescription type designation and is not applicable in this context.

Correct Answer: B

Rationale: Enoxaparin should be administered with the needle at a 90-degree angle to ensure proper subcutaneous delivery. Choice B is correct as it aligns with the recommended angle for subcutaneous injections. Administering enoxaparin at a 45-degree angle (Choice A), 30-degree angle (Choice C), or 15-degree angle (Choice D) would not be appropriate and may lead to improper administration or absorption of the medication.