Final answer:
The priority nursing diagnosis for a client with exacerbation of COPD is Impaired Gas Exchange related to decreased oxygenation option (a).
Step-by-step explanation:
The nurse identifies the nursing diagnosis of Impaired Gas Exchange related to decreased oxygenation option (a) as the priority for a client admitted with exacerbation of COPD based on the information provided.
Impaired Gas Exchange means that there is an imbalance between the amount of oxygen needed by the body and the amount of oxygen being supplied to the body. The respiratory rate of 18 and arterial blood gases showing a pH of 7.29 and CO2 of 50 mm Hg indicate respiratory acidosis, which can lead to impaired gas exchange. The low oxygen level (O2 of 72 mm Hg) also contributes to impaired gas exchange.
The dry cough and compromised respiratory function (associated with COPD) can further impair gas exchange. It is important to prioritize this nursing diagnosis because impaired gas exchange can lead to respiratory failure and other complications. By addressing the impaired gas exchange, the nurse can help improve oxygenation and overall respiratory function for the client.