Onboard Placement Confirmation for Operator-Independent Emergency Intubation
Prehospital first-pass intubation failure is nearly 35%, and a non-electronic soft robot has now closed much of that gap: eight EMS providers given minutes of training reached 86.9% first-pass success on eight unembalmed cadavers against 62.5% with a video laryngoscope, a difference that is not significant across all airways (P = 0.055) but is significant in the difficult-airway subgroup, 92.9% against 35.7%, odds ratio 23.4, P = 0.002 (Haggerty et al., Science Translational Medicine, 2025; preliminary, no power analysis). The device carries no sensing at all, and every placement in that study was adjudicated by an investigator passing a bronchoscope through the tube to view tracheal rings, an instrument the device does not carry and an ambulance does not have. Guidance and confirmation are separable problems: within a series of 3,632 prehospital intubations, unrecognised oesophageal intubation before HEMS arrival ran at 37.5% with video laryngoscopy against 30.6% with direct laryngoscopy in the traumatic circulatory arrest subgroup, and 0% against 20% in the medical cardiac arrest subgroup (Maissan et al., 2022; subgroup rates, denominators unpublished, direction reversed, and the paper attributes the traumatic-arrest reversal to ambulance nurses specifically). The incumbent confirmation standard carries a 3% false-positive rate (Li, 2001), and although current AHA guidance mandates waveform capnography including during CPR, low pulmonary blood flow suppresses the signal exactly where the event rate is highest. This brief sets out a program for the missing half: an onboard, operator-independent placement verdict that does not depend on perfusion or on a trained interpreter.
Read Brief