Real-time emergency blood coordination platform with live stats
Multi-step emergency request form with blood group selection
Nearby blood banks with real-time inventory and distance
Live map showing 14 donors, 3 blood banks and active emergencies
Real-time analytics dashboard with fulfillment rates and charts
Hospital dashboard with active requests and blood bank inventory

Inspiration

In medical emergencies, finding blood quickly can mean the difference between life and death. We saw how families often spend hours calling hospitals, blood banks, and donors while the patient is still waiting. Most systems are outdated, fragmented, and depend heavily on manual coordination.

We wanted to build something that could reduce this delay and make emergency blood response faster, smarter, and more connected. That idea became PulseLink.

What it does

PulseLink is a real-time emergency blood coordination platform that connects patients, donors, hospitals, and blood banks during critical situations.

When an emergency request is created:

Nearby compatible donors are matched instantly
Live alerts are sent in real time
Donors can accept or reject requests immediately
Hospitals can track coordination live
A real-time map shows donor locations and ETA
The system automatically escalates if nobody responds

Instead of hours of manual searching, PulseLink coordinates emergency blood response within minutes.

How we built it

Frontend: Next.js 14 + Tailwind CSS
Backend: Node.js + Express.js
Real-time: Socket.IO
Database: MongoDB Atlas with geospatial indexing
Maps: Leaflet.js + OpenStreetMap
Auth: JWT-based secure authentication
Deployment: Vercel (frontend) + Render (backend)

Challenges we ran into

One of the biggest challenges was implementing real-time communication between Vercel and Render while handling CORS, cookies, and WebSocket connections correctly in production.

We also faced challenges designing the donor matching algorithm, handling secure authentication across domains, and managing Socket.IO rooms so alerts reached the correct users instantly.

Accomplishments that we're proud of

Built a fully working real-time emergency coordination system
Successfully implemented geospatial donor matching
Live alerts and dashboards update instantly without refresh
Deployed the complete full-stack system to production
Designed and developed within a short hackathon timeline

What we learned

Real-time system architecture using Socket.IO
MongoDB geospatial queries and indexing
Production deployment and authentication challenges
Cross-domain cookie and CORS handling
The importance of scalable emergency response systems

What's next for PulseLink

Government and hospital API integration
AI-based blood demand prediction
Rare blood group rapid response network
React Native mobile application
Expansion to more cities across India

Our goal is to make emergency blood coordination faster, more reliable, and less stressful for families and hospitals — because every minute matters.