Related Experiment Video
Updated: Jun 23, 2026

Non-Intubated Video-Assisted Thoracoscopic Surgery
Published on: May 26, 2023
Effects on hemodynamics of SEEKflex-guided intubation for cervical spine surgery
Ruifang Sheng1, Shengyu Jin2, Chenyu Wang2
1Department of Anesthesiology, Shanghai Changhai Hospital, Naval Medical University Shanghai, China.
Objectives:
To evaluate the hemodynamic effects of Safe Easy Endotracheal Kit-flexible (SEEKflex)-guided intubation in patients undergoing cervical spine surgery.
Methods:
The post hoc analysis was based on a completed randomized controlled trial (RCT) comparing SEEKflex versus stylet-assisted intubation under videolaryngoscopy. Hemodynamic parameters were recorded at baseline (T0), pre-induction (T1), pre-intubation (T2), and 1 min post-intubation (T3).
Results:
A total of 128 patients was enrolled in the post hoc analysis. One minute after intubation, systolic blood pressure (SBP) in the SEEKflex group was 10.9 mmHg lower than that in the stylet group (124.8 mmHg vs. 135.7 mmHg, P = 0.007). Patients in the SEEKflex group exhibited a significantly smaller increase in SBP (12.7 mmHg vs. 28.2 mmHg, P < 0.001), and the proportion of patients in the SEEKflex group experiencing a greater than 30% increase in SBP was significantly lower in the SEEKflex group than in the stylet group (20.6% vs. 40.0%, P = 0.017).
Conclusions:
SEEKflex significantly reduced hemodynamic fluctuations during intubation in cervical spine surgery.
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