Cardiovascular

Intubation duration after general anesthesia for thrombectomy in acute ischemic stroke: a cohort study.

TL;DR

Prolonged intubation duration post-thrombectomy in AIS under GA is associated with increased risk of poor outcome and pneumonia, suggesting intubation duration may serve as a prognostic marker in this setting.

Key Findings

Longer intubation duration was independently associated with higher risk of poor functional outcome (mRS 3-6) at 90 days.

  • Adjusted odds ratio of 1.19 per 6-hour increment (95% CI 1.04–1.35, p = 0.01)
  • 69 of 133 patients (51.9%) had mRS 3-6 at 90 days
  • Association was found in multivariable analysis controlling for other factors
  • Patients with intubation duration ≥ 96 hours and those discharged/died with intubation within 96 hours were excluded from analysis

Longer intubation duration was independently associated with higher risk of pneumonia during hospitalization.

  • Adjusted odds ratio of 1.28 per 6-hour increment (95% CI 1.12–1.46, p < 0.001)
  • Pneumonia occurred in 74 of 133 patients (55.6%)
  • This association was stronger than that observed for poor functional outcome
  • Association was identified in multivariable analysis

The study enrolled 133 AIS patients undergoing endovascular thrombectomy under general anesthesia for final analysis.

  • Patients were consecutively enrolled
  • Exclusion criteria included intubation duration ≥ 96 hours and discharge/death with intubation within 96 hours
  • 14 patients (10.5%) died within the 90-day follow-up period
  • 31 patients (23.3%) experienced intracranial hemorrhagic transformation

Intubation duration was not significantly associated with 90-day mortality or intracranial hemorrhagic transformation in multivariable analysis.

  • 14 patients (10.5%) died within 90 days
  • 31 patients (23.3%) experienced intracranial hemorrhagic transformation
  • These were designated as secondary outcomes
  • The primary statistically significant associations were limited to mRS 3-6 and pneumonia

The authors concluded that intubation duration may serve as a prognostic marker in AIS patients undergoing thrombectomy under general anesthesia.

  • The study design was a cohort study and could not establish causality
  • Authors noted that prospective studies are needed to determine whether early extubation improves outcomes
  • The timing of extubation post-thrombectomy was identified as an area where clinical guidance remains unclear
  • Intubation duration was measured in 6-hour increments for statistical modeling

What This Means

This research studied 133 stroke patients who received a clot-removal procedure (thrombectomy) while under general anesthesia, and examined how long they remained on a breathing tube (intubated) after the procedure. The researchers found that for every additional 6 hours a patient remained intubated, their odds of having a poor functional outcome at 90 days increased by about 19%, and their odds of developing pneumonia increased by about 28%. Over half the patients (55.6%) developed pneumonia during hospitalization, and about half (51.9%) had poor functional outcomes at 90 days. The study found no statistically significant association between intubation duration and death within 90 days or bleeding in the brain, though these events did occur in a meaningful proportion of patients. The findings suggest that how long a stroke patient remains on a breathing tube after a thrombectomy procedure may be an important indicator — and possibly contributor — to how well they recover, with longer intubation linked to worse outcomes. This research suggests that keeping stroke patients on a breathing tube longer after their procedure may be associated with worse recovery and higher rates of lung infection, though the study design cannot prove that the prolonged intubation itself caused these worse outcomes. The authors emphasize that future prospective studies are needed to determine whether actively working to remove the breathing tube earlier would actually improve patient outcomes, rather than the prolonged intubation simply reflecting that sicker patients take longer to be ready for extubation.

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Citation

Fan J, Liu G, Du Y, Hao Z, Yang J, Zhan S, et al.. (2026). Intubation duration after general anesthesia for thrombectomy in acute ischemic stroke: a cohort study.. Frontiers in neurology. https://doi.org/10.3389/fneur.2026.1937683