Ms. L., 72, with a history of heart failure, presents with w…
Ms. L., 72, with a history of heart failure, presents with worsening dyspnea and decreased exercise tolerance over 4 days. She reports sleeping upright in a recliner. Assessment and results: RR 30/min SpO₂ 88% on room air BP 142/84 BNP 1,200 pg/mL Na⁺ 130 mEq/L Creatinine 1.6 mg/dL Chest x-ray: interstitial and alveolar edema Echocardiogram last month: LVEF 28% Which interpretation is most accurate?