Airway obstruction time and outcomes after foreign body airway obstruction: a nationwide prospective cohort study from the MOCHI registry

Igarashi, Y; Norii, T; Nakanishi, H; Matsukawa, H; Nakae, R; Yokobori, S; MOCHI Investigators

doi:10.1016/j.resuscitation.2026.111002

Cardio-oncology & other

Airway obstruction time and outcomes after foreign body airway obstruction: a nationwide prospective cohort study from the MOCHI registry

ResuscitationPublished 4 Feb 2026secondary analysis of the nationwide, prospective MOCHI registry

Primary result · SurvivalResultAdjusted odds ratio 0.86 95% CI 0.81–0.90

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Authors' conclusion

Outcomes declined continuously per minute of unresolved obstruction, with no inflection point or "safe" time window. This highlights that every minute of delay worsens prognosis, reinforcing the need for immediate bystander intervention.

Study context

Population: Patients with foreign body airway obstruction (FBAO) in Japan, airway obstruction times of 0–25 min229 met the primary inclusion criteria
Participants: 409 patients

Comparison: Odds ratios per 1-min increase in airway obstruction time
Primary endpoint: Survival
Follow-up: 30-day

Methodological detailsmultivariable logistic regression and spline models

Multivariable logistic regression and spline models

Primary result

As reported in the abstract

Adjusted odds ratio

0.86

95% CI 0.81–0.90

Per 1-min increase in obstruction duration

aOR 0.86 (95% CI 0.81–0.90)

Per 1-min increase in obstruction duration, as printed

Survived to 30 days: 60%

Secondary outcomes

Outcome	← Lower ←→ Higher →	aOR (95% CI)
Favorable neurological outcome (Cerebral Performance Category 1-3), secondary outcome · 30-dayLower odds with longer obstruction	0.512	0.85 (0.80–0.89)
	0.512Adjusted odds ratio (log scale)

Favorable neurological outcome (Cerebral Performance Category 1-3), secondary outcome — Favorable neurological outcome: 47%

Predicted outcomes by obstruction time (spline models)

Steep monotonic decline from onset without evidence of a distinct threshold or "safe" time window

Baseline characteristics

Median age: 81 years
Male: 48%

Original publication

Airway obstruction time and outcomes after foreign body airway obstruction: a nationwide prospective cohort study from the MOCHI registry. Resuscitation. Published 4 February 2026. doi:10.1016/j.resuscitation.2026.111002

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