HESI GERIATRICS 2020 A frail, elderly client is admitted to the unit with a diagnosis of pneumonia. Which finding is most important for the registered nurse (RN) to report to the healthcare provider? A. Fever and chills B. Confusion and dehydration C. Crackles in the lung fields D. Nausea and vomiting - B. Confusion and dehydration Rationale: Confusion and dehydration (B) are findings of inadequate oxygenation and perfusion in this frail elderly client. (A), (C) and (D) are all common wi...