Correct Answer: B

Rationale: Administering insulin as prescribed before meals is crucial for managing diabetes. This instruction is vital as it helps the client maintain blood sugar levels within the target range. Checking blood sugar levels once daily is important but not as critical as ensuring the timely administration of insulin. Taking medication only when feeling unwell is dangerous as it may lead to uncontrolled blood sugar levels. Eating carbohydrate-rich meals may actually destabilize blood sugar levels rather than stabilizing them, making it an incorrect choice.

Correct Answer: B

Rationale: When a client with a tracheostomy is experiencing respiratory distress, the immediate priority for the nurse is to suction the tracheostomy. This action helps clear the airway of secretions and ensures that the client can breathe effectively. Increasing the oxygen flow rate may be necessary but addressing the airway obstruction is more critical. Notifying the physician immediately is important but may cause a delay in addressing the immediate need for airway clearance. Administering a bronchodilator may help with bronchospasm but should not take precedence over ensuring a clear airway in a client with respiratory distress.

Correct Answer: B

Rationale: The correct intervention for a client with a chest tube connected to a closed drainage system is to maintain the drainage below the level of the chest. This position allows proper drainage of fluids and helps prevent complications such as backflow of blood or fluids into the chest cavity. Clamping the chest tube (Choice A) is incorrect as it can lead to a tension pneumothorax. Elevating the chest tube above chest level (Choice C) is also incorrect because it can impede proper drainage. Avoiding frequent dressing changes (Choice D) is important to prevent introducing infection, but it is not directly related to the position of the drainage system.

Correct Answer: A

Rationale: The correct answer is to irrigate the wound with normal saline. Normal saline is the preferred solution for wound irrigation as it is isotonic and gentle, promoting healing in granulating wounds. Choice B, applying a wet-to-dry gauze dressing, is not appropriate for clean, granulating wounds as it can cause trauma to the wound bed upon removal. Choice C, using a cotton ball to cleanse the wound, is not ideal as cotton fibers can adhere to the wound and cause contamination. Choice D, administering an analgesic after the dressing change, is important for pain management but is not directly related to irrigating and dressing the wound.

Correct Answer: D

Rationale: In cases of anaphylaxis, all of the listed interventions are crucial for effective management. Administering epinephrine is the primary treatment to reverse the allergic reaction rapidly. Providing oxygen ensures adequate oxygenation to vital organs, and monitoring the airway is essential to prevent obstruction and maintain a clear air passage. Therefore, all three interventions are necessary in managing anaphylaxis. Choices A, B, and C are not individually sufficient to address all aspects of anaphylaxis, making the comprehensive approach of 'All of the above' the correct answer.