Effects of the head-elevated position on cervical spine motion during videolaryngoscopic intubation with manual in-line stabilization: a randomized controlled trial
Primary result · Cervical spine motion at occiput-C1Result — go to the resultMean difference −2.9 ° 95% CI −5.0 to −0.7Authors' conclusion
The head-elevated position during Macintosh-type videolaryngoscopic intubation with manual in-line stabilization resulted in less upper cervical spine motion than the head-flat position.
Study context
- Population
- Patients undergoing coil embolization for unruptured cerebral aneurysms, Macintosh-type videolaryngoscopic intubation with manual in-line stabilization
- Participants
- 55 vs 54
- Comparison
- Head-elevated vs Head-flat
- Head-elevatedn = 55
- Head-flatn = 54reference
- Primary endpoint
- Cervical spine motion during intubation (angle during minus angle before intubation) at the occiput-C1 segment
Primary result
Cervical spine motion at occiput-C1
Mean difference
−2.9 °
95% CI −5.0 to −0.7
P = 0.009
By group
Head-elevated vs Head-flat
mean difference −2.9 ° (95% CI −5.0 to −0.7); P = 0.009
As reported in the abstract
Further findings
Cervical spine motion at C1-C2 and C2-C5; intubation performance (first-attempt success, intubation time, external laryngeal maneuver)
- No significant difference between groups
Safety
Intubation-associated airway complications (airway bleeding, injury, sore throat, hoarseness)
- No significant difference between groups
Original publication
Effects of the head-elevated position on cervical spine motion during videolaryngoscopic intubation with manual in-line stabilization: a randomized controlled trial. Can J Anaesth. Published 11 April 2025. doi:10.
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