Final answer:
The nurse should intervene if the reservoir bag on a partial rebreather mask deflates with each breath, as this indicates inadequate oxygen delivery or a system leak.
Step-by-step explanation:
The assessment finding that the nurse should intervene to when a client is receiving oxygen via a partial rebreather mask is A) The reservoir bag deflates with each breath. The reservoir bag on a partial rebreather mask should partially inflate with each of the client's breaths. The purpose of the bag is to capture exhaled gas for rebreathing since it contains a high oxygen concentration, which allows for higher fractions of inspired oxygen. Complete deflation indicates that either the oxygen flow is too low or there is a leak in the system. This could result in insufficient oxygen delivery and lead to hypoxemia. Option B) The client reports a feeling of warmth around the mask is not typically a concern unless there are other signs of skin irritation or thermal injury. Option C) The oxygen flow rate is set at 8L/min is appropriate for a partial rebreather mask, which usually requires flow rates of 8-11 L/min to maintain the reservoir bag two-thirds full. Option D) The client's oxygen saturation is 92% may be acceptable, depending on the patient's condition and treatment goals. Normal oxygen saturation levels range between 95-100%, but some patients with chronic lung conditions may have target saturations as low as 88-92%.