vitaldemo

VitalRecorder simulator that downloads sample vital signs data from VitalDB open dataset and streams it as HL7 v2.6 messages to a VitalServer via Socket.IO.

Acts as a VitalRecorder client, sending real-time HL7 data for 5 simulated beds.

Installation

pip install vitaldemo

Usage

# Stream to default server (vitaldb.net)
vitaldemo

# Stream to a custom server
vitaldemo https://my-server.com

# With custom VitalRecorder code
vitaldemo https://my-server.com --vrcode MY_DEMO

Options

What It Does

1. Downloads 5 sample .vital files from api.vitaldb.net on startup
2. Connects to the specified VitalServer via Socket.IO (WebSocket)
3. Emits join_vr with the vrcode to register as a VitalRecorder
4. Sends gzip-compressed HL7 v2.6 payloads via send_data event every 1 second
5. Loops data infinitely - when a file ends, it restarts from the beginning

HL7 v2.6 Message Format

Each payload contains HL7 messages for all 5 beds concatenated together:

MSH|^~\&|VitalRecorder|VITALDEMO|||20250401120000||ORU^R01|1|P|2.6
PID|||
PV1||I|BED-1
OBR|1|||VITAL_SIGNS|||20250401115959|20250401120000
OBX|1|NM|ECG_HR^Monitor/HR||72|bpm|40^200||||R
OBX|2|NA|ECG_WAV^Monitor/ECG_II@100||0.12^0.15^...||mV|-1.5^1.5||||R
MSH|^~\&|VitalRecorder|VITALDEMO|||20250401120000||ORU^R01|2|P|2.6
PID|||
PV1||I|BED-2
...

OBX Value Types

Node.js Version

A JavaScript version is also available:

npx vitaldemo [server_url] [--vrcode CODE]

License

MIT