Electronic Health Record (EHR) System

A web-based Electronic Health Record (EHR) system built with Rust and Python for the backend, AWS for database management, and HTML5, CSS, JavaScript (with React/Angular/Vue.js) for the frontend. This system aims to provide secure, scalable, and interoperable healthcare data management for clinicians and patients.

Table of Contents

• Features
  • User Authentication and Authorization
  • Patient Data Management
  • Clinical Workflow Support
  • Patient Portal
  • Data Visualization
  • Interoperability
  • Security and Compliance
  • Analytics and Reporting
• Technology Stack
• Setup and Installation
• Development Roadmap
• Contributing
• License

Features

User Authentication and Authorization

• Secure Login: Multi-factor authentication (MFA) using OAuth 2.0 or OpenID Connect for clinicians and patients.
• Role-Based Access Control (RBAC): Different access levels (e.g., admin, doctor, nurse, patient) to restrict data visibility.
• Session Management: Secure session handling with JWT (JSON Web Tokens) or equivalent.
• Password Recovery: Secure password reset via email or SMS with temporary tokens.

Patient Data Management

• Patient Profiles: Store and manage demographics (name, age, gender, contact), medical history, allergies, medications, and vitals.
• Record Creation/Editing: CRUD (Create, Read, Update, Delete) operations for patient records, accessible by authorized users.
• Search Functionality: Full-text search for patient records using indexed fields (e.g., name, ID).

Clinical Workflow Support

• Encounter Management: Log patient visits, including symptoms, diagnoses, and treatment plans.
• Order Entry: Allow clinicians to order labs, imaging, or prescriptions with e-prescribing integration.
• Clinical Decision Support: Basic rule-based alerts for drug interactions, allergies, or abnormal vitals.

Patient Portal

• Dashboard: Display appointments, test results, and medications for patients.
• Appointment Scheduling: Book, reschedule, or cancel appointments with calendar integration.
• Secure Messaging: Enable patient-provider communication with encryption.
• Prescription Refills: Allow patients to request refills, routed to clinicians for approval.

Data Visualization

• Charts and Graphs: Display vitals, lab results, or trends (e.g., blood pressure over time) using libraries like Chart.js or D3.js.
• Document Viewer: Render PDFs or images (e.g., lab reports, X-rays) in the web app.

Interoperability

• FHIR Compliance: Implement Fast Healthcare Interoperability Resources (FHIR) APIs for data exchange with other systems.
• Integration with External Systems: Connect to labs, pharmacies, or imaging systems via APIs or HL7 standards.

Security and Compliance

• Data Encryption: Use TLS for data in transit and AES-256 for data at rest.
• Audit Logging: Track all user actions (e.g., who accessed what record) for compliance with HIPAA/GDPR.
• Data Anonymization: Ensure patient data is de-identified for analytics or research purposes.
• Backup and Recovery: Regular automated backups on AWS with disaster recovery mechanisms.

Analytics and Reporting

• Basic Analytics: Generate reports on patient outcomes, appointment stats, or medication usage.
• Export Functionality: Allow data export in CSV/PDF formats for administrative use.

Technology Stack

• Backend:
  • Rust: Actix Web or Rocket for high-performance APIs and WebSocket support.
  • Python: FastAPI or Flask for rapid API development, with Pydantic for validation and Celery for asynchronous tasks.
• Database (AWS):
  • Amazon RDS: PostgreSQL/MySQL for structured data.
  • Amazon DynamoDB: For unstructured data (e.g., notes, logs).
  • Amazon S3: Storage for medical images and PDFs.
  • Amazon ElastiCache: Redis/Memcached for caching.
• Frontend:
  • HTML5, CSS, JavaScript: Core web technologies.
  • Framework: React (with Redux/Zustand), Angular (with RxJS), or Vue.js (with Vuex/Pinia).
  • Styling: Material-UI, Tailwind CSS, or Bootstrap for responsive design.
• Infrastructure:
  • AWS ECS/EC2 or Fargate: Containerized deployment.
  • AWS CloudFront: CDN for static assets.
  • AWS Route 53: DNS management.
  • AWS CloudWatch: Monitoring and logging.
• Interoperability: FHIR and HL7 standards for data exchange.
• Security: TLS, AES-256, OAuth 2.0, and compliance with HIPAA/GDPR.

Setup and Installation

1. Prerequisites:

   • Install Rust (via rustup), Python 3.8+, and Node.js.
   • Set up an AWS account with access to RDS, DynamoDB, S3, and ECS/Fargate.
   • Install Docker for containerization.

2. Backend Setup:

   # Clone the repository
   git clone <repository-url>
   cd ehr-system
   
   # Rust setup
   cd backend/rust
   cargo build --release
   
   # Python setup
   cd ../python
   pip install -r requirements.txt