Q: Heart failure harrison A: Now let me search the library for Harrison's heart failure content, running parallel searches for comprehensive coverage. A: Found Harrison's 22E. Now let me find the heart failure sections in it specifically. A: The main heart failure chapter is block28 Chapter 264. Let me read the core sections in parallel. A: Good content. Let me read the clinical features/diagnosis and pathophysiology sections now in parallel. A: Excellent. Now let me get the HFrEF and HFpEF management sections, and the neurohormonal section. A: Now let me get the management of HFrEF 4 pillars of therapy section which is around offset 2768-2960. A: I now have rich content from Harrison's 22E. Let me also get the neurohormonal/pathophysiology section and the physical exam section.