Mr. Thomas, a 69-year-old male with a history of heart failu…
Mr. Thomas, a 69-year-old male with a history of heart failure, is admitted to the telemetry unit with muscle cramps, generalized weakness, and mild confusion. He reports poor oral intake over the last 2 days and has been taking his prescribed furosemide as usual. On exam: BP 96/54 mmHg, HR 112, dry mucous membranes, decreased skin turgor, and irregular pulse. Current labs: Na⁺: 128 mmol/L (135–145) K⁺: 2.7 mmol/L (3.5–5.0) Cl⁻: 96 mmol/L HCO₃⁻: 34 mmol/L BUN: 36 mg/dL Creatinine: 1.6 mg/dL