DistillNote: LLM-based clinical note summaries improve heart failure diagnosis

• URL: http://arxiv.org/abs/2506.16777v1
• Date: Fri, 20 Jun 2025 06:45:40 GMT
• Title: DistillNote: LLM-based clinical note summaries improve heart failure diagnosis
• Authors: Heloisa Oss Boll, Antonio Oss Boll, Leticia Puttlitz Boll, Ameen Abu Hanna, Iacer Calixto,
• Abstract summary: We generate over 64,000 admission note summaries through three techniques.<n>One-step summaries are favoured by clinicians according to relevance and clinical actionability.<n>Distilled summaries achieve 79% text compression and up to 18.2% improvement in AUPRC compared to an LLM trained on the full notes.
• Score: 1.9074059825851202
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Large language models (LLMs) offer unprecedented opportunities to generate concise summaries of patient information and alleviate the burden of clinical documentation that overwhelms healthcare providers. We present Distillnote, a framework for LLM-based clinical note summarization, and generate over 64,000 admission note summaries through three techniques: (1) One-step, direct summarization, and a divide-and-conquer approach involving (2) Structured summarization focused on independent clinical insights, and (3) Distilled summarization that further condenses the Structured summaries. We test how useful are the summaries by using them to predict heart failure compared to a model trained on the original notes. Distilled summaries achieve 79% text compression and up to 18.2% improvement in AUPRC compared to an LLM trained on the full notes. We also evaluate the quality of the generated summaries in an LLM-as-judge evaluation as well as through blinded pairwise comparisons with clinicians. Evaluations indicate that one-step summaries are favoured by clinicians according to relevance and clinical actionability, while distilled summaries offer optimal efficiency (avg. 6.9x compression-to-performance ratio) and significantly reduce hallucinations. We release our summaries on PhysioNet to encourage future research.

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