Correct Answer: A

Rationale: The correct first step in using a fire extinguisher is to remove the safety pin. This action enables the extinguisher to be activated and used effectively. Choice B, aiming the extinguisher at the base of the fire, comes after removing the safety pin. Choice C, squeezing the handle to release the extinguishing agent, and choice D, sweeping the extinguisher from side to side, are subsequent steps in using a fire extinguisher and should follow removing the safety pin.

Correct Answer: B

Rationale: Edema, indicated by 2+ edema of fingers and hands, can impair blood flow and peripheral perfusion, leading to reduced oxygen saturation readings on a pulse oximeter. High blood pressure (choice A) would not directly affect oxygen saturation readings. Radial pulse volume (choice C) and capillary refill time (choice D) are more related to assessing circulation rather than contributing significantly to oxygen saturation readings.

Correct Answer: B

Rationale: The correct answer is Fowler's position. Placing the client in Fowler's position, with the head of the bed elevated to 45-60 degrees, reduces the risk of aspiration during bolus enteral feedings by facilitating the flow of the feeding into the stomach. Prone position (choice A) is lying face down, which is not suitable for feeding. Sims' position (choice C) is a side-lying position used for rectal examinations or enemas, not for feeding. Supine position (choice D) is lying flat on the back and is not optimal for reducing the risk of aspiration during bolus tube feedings.

Correct Answer: A

Rationale: Erythema on pressure points indicates potential skin breakdown due to prolonged immobility. It requires immediate intervention to prevent pressure ulcers. Lower-extremity pulse strength of 2+ is a normal finding, indicating adequate peripheral perfusion. Fluid intake of 3,000 mL per day is within the normal range and promotes hydration. A bowel movement every other day is a reasonable frequency for some individuals and does not necessarily indicate a need for immediate intervention in this scenario.

Correct Answer: A

Rationale: In this scenario, the nurse should assign the task of assisting the client with a partial bed bath to an assistive personnel (AP). APs are trained to provide basic care tasks like hygiene assistance. Options B, C, and D involve more complex tasks such as measuring BP, using a communication board for speech-impaired clients, and feeding, which require nursing judgment and skills beyond basic care. Therefore, these tasks should be performed by licensed nursing staff who can assess, communicate effectively, and address the specific medical and safety needs of the client.