A 56-year-old woman with a known history of heart failure with reduced ejection fraction (EF 28%) and hypertension presents to her cardiologist for a follow-up visit. She was initiated on carvedilol and lisinopril two weeks ago and has been maintained on optimal doses. Her blood pressure is 118/74 mmHg, heart rate is 68 bpm, and oxygen saturation is 94% on room air. Physical examination reveals jugular venous distension, bilateral basilar crackles, and 2+ pitting edema extending to the mid-calf. She reports waking up at night unable to breathe and requiring two pillows to sleep comfortably. A loop diuretic is added to her regimen for symptom management. Which of the following best describes the pharmacological role of the diuretic in this setting?

1. A)Diuretics reduce mortality in heart failure by preventing sudden cardiac death arrhythmias
2. B)Diuretics reverse left ventricular remodeling by reducing chamber afterload
3. C)Diuretics activate neurohormonal compensation mechanisms that improve cardiac function
4. D)Diuretics provide symptomatic relief of congestion but do not alter the underlying disease progression or prognosisGABARITO
5. E)Diuretics improve myocardial contractility through reduced preload optimization