Seven Reading Ages, One Discharge Letter
A London teaching hospital audited its discharge letters and found that 72% were written at a reading age of 15 or above — well beyond the average UK adult reading level of 9. Patients with lower health literacy were 2.4 times more likely to be readmitted within 30 days, often because they misunderstood medication instructions or missed follow-up appointments described in language they could not parse. The clinical communications team wanted to produce simplified patient-facing versions of every discharge letter, but rewriting 800 letters per week manually would require three additional band-5 staff members the trust could not recruit.
Generative AI solves this at scale. A large language model can take a clinician-authored discharge summary, extract the key instructions, and rewrite them at a target reading age — complete with bullet points, simplified drug names, and plain-English explanations of medical terms. The challenge is doing this without sending patient-identifiable clinical text to an external API. Private GPU hosting running open-weight LLMs keeps every token within the trust’s GDPR-governed boundary.
AI Architecture for Clinical Content Generation
The content pipeline has three distinct generation pathways. First, discharge-letter simplification: a Llama 3 70B model receives the original discharge summary and a system prompt specifying target reading age, formatting rules, and mandatory inclusion of medication names and follow-up dates. Second, patient information leaflet generation: a DeepSeek model produces condition-specific educational content aligned to NICE guidelines, optionally paired with Stable Diffusion-generated medical illustrations. Third, clinical summary generation: concise ward-round summaries and handover notes auto-generated from structured EHR data.
All three pathways share a clinical terminology grounding layer — a RAG module loaded with BNF entries, NICE pathways, and the trust’s own formulary — ensuring generated content never invents drug names or contradicts local protocols. Outputs pass through a clinician review queue before reaching patients. The entire pipeline runs on a single dedicated GPU server.
GPU Requirements for Healthcare Content Workloads
Content generation is a batch-oriented workload with moderate concurrency. The 70B parameter model at 4-bit quantisation requires approximately 35 GB VRAM. Adding Stable Diffusion for illustration generation needs another 8–10 GB. Throughput is measured in documents generated per hour.
| GPU Model | VRAM | Docs/Hour (70B 4-bit) | Best For |
|---|---|---|---|
| RTX 5090 | 24 GB | ~40 (8B model only) | Small trusts, single-pathway content |
| RTX 6000 Pro | 48 GB | ~95 | District general hospitals |
| RTX 6000 Pro 96 GB | 80 GB | ~180 | Teaching hospitals, multi-language content |
The RTX 6000 Pro handles 800 discharge letter rewrites per day with time to spare for leaflet generation. Trusts requiring multilingual content (common in London boroughs serving diverse populations) should consider the RTX 6000 Pro for concurrent translation workloads. For GPU selection detail, consult the LLM inference GPU guide.
Recommended Software Stack
- Text Generation: Llama 3 70B (AWQ 4-bit) for discharge simplification, DeepSeek 7B for leaflet drafts
- Medical Illustration: Stable Diffusion XL fine-tuned on medical diagram datasets (see image generator hosting)
- RAG Grounding: LlamaIndex with Qdrant, loaded with BNF, NICE, and local formulary data
- Reading-Age Analysis: Flesch-Kincaid and SMOG index calculators as post-generation validators
- Review Workflow: Custom Streamlit app with clinician approve/edit/reject interface
- Output Formats: PDF (via WeasyPrint), HTML for patient portal, plain text for SMS
Compliance and Cost Analysis
Generated patient content must be clinically reviewed before distribution — the AI assists but does not replace clinical sign-off. This human-in-the-loop requirement is consistent with MHRA guidance on clinical decision support. All generated content and its source data remain on UK-hosted infrastructure, simplifying DPIA requirements.
| Approach | Monthly Cost (800 docs/week) | Turnaround |
|---|---|---|
| Manual rewriting (3 band-5 staff) | £9,500–£11,000 | 48–72 hours per batch |
| Cloud LLM API | £1,400–£3,200 | Minutes |
| GigaGPU RTX 6000 Pro Dedicated | From £399/mo | Minutes, sovereign |
The dedicated server matches cloud API speed at a fraction of the ongoing cost, without data-sovereignty trade-offs. Media organisations running content generation at scale confirm similar cost dynamics. Browse additional use cases for cross-sector comparisons.
Getting Started
Select 200 recent discharge letters across three specialties (e.g., cardiology, respiratory, orthopaedics). Generate simplified versions with Llama 3 70B, measure reading-age reduction using Flesch-Kincaid, and have two clinicians independently review accuracy. Target a reading age of 9–11 with zero clinical inaccuracies. Most pilots achieve this within two prompt-engineering iterations. Scale to all specialties once the review workflow is embedded. Trusts already running patient triage chatbots can feed simplified content directly into the chatbot’s knowledge base, and those processing incoming medical records can close the loop between document ingestion and patient communication.
Generate Patient-Friendly Clinical Content on Dedicated GPUs
Simplify discharge letters and produce patient education materials with LLMs — UK-hosted, clinician-reviewed, reading-age appropriate.
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