Twenty Alarms, Zero Integration:The Case for a Neonatal Instrument Digital Interface

NIDI (Neonatal Instrument Digital Interface) is a proposed communication protocol for neonatal intensive care that connects all bedside devices — monitors, ventilators, infusion pumps, sensors — on a shared bus using the MIDI 1.0 serial protocol. Each of the 16 MIDI channels is assigned to a device category, with Control Change messages mapping every clinical parameter to a standardized address space. The protocol enables cross-domain interaction modelling: when one device parameter changes, the system computes predicted effects across all connected domains. At the center of the bus sits the baby — either a real patient whose sensor data feeds the system, or a computational physiological model built on FM synthesis mathematics that simulates cross-domain responses for training and prediction. An AI layer above the model learns from per-patient interaction patterns to provide early warning, intervention simulation, and pattern recognition across shifts. MIDI 2.0 extends the architecture to 32-bit resolution, removing quantization as a clinical constraint. The per-patient model learns only for the patient it monitors; cross-patient data use requires explicit parental consent. NIDI addresses a gap that no existing standard fills: IEEE 11073 SDC transports data between devices, but does not interpret the interactions between them. Twenty devices alarm independently. No system computes what happens when you change two variables simultaneously. NIDI does.