Zhitong Deng

Walking the tightrope: Mixed respiratory failure exacerbated by heart rate control and concurrent pneumonia in an elderly patient with new-onset atrial fibrillation

Rationale: The interplay between new-onset atrial fibrillation (AF), heart failure (HF) with preserved ejection fraction (HFpEF), and acute infection in the elderly presents a complex clinical challenge. Rate control is a cornerstone of AF management, but its application in frail...