The nurse is caring for a client with acute kidney injury (AKI). Which assessment finding warrants immediate intervention?

Choice A reason: Dyspnea and sinus tachycardia may indicate fluid overload or pulmonary edema, which are life-threatening complications of AKI and require urgent intervention. Choice B reason: While infection is concerning, respiratory and cardiac symptoms take precedence due to their potential for rapid deterioration. Choice C reason: Low, concentrated urine output is expected in AKI but does not require immediate action unless accompanied by other critical signs. Choice D reason: A bad taste in the mouth may be related to uremia but is not an urgent symptom compared to respiratory distress.