J Neurosurg 142:797–807, 2025
The study investigated the risk of venous air embolism (VAE) during neurosurgery in the lounging position, finding no permanent sequelae or fatal events. Despite a 51.4% VAE detection rate, no hemodynamic instability occurred, suggesting experienced teams can safely use this position.
Study Overview
• Objective: Assess venous air embolism (VAE) risk and outcomes in lounging position neurosurgery.
• Study Design: Retrospective analysis of 1000 patients from 2010 to 2020.
• Primary Focus: VAE incidence, severity, and associated complications.
Key Findings
• VAE Detection: 51.4% of patients experienced VAE, with no grade 5 events.
• Complications: 0.3% developed acute respiratory distress syndrome (ARDS) linked to VAE grade.
• No Permanent Sequelae: No patients suffered permanent neurological deficits from VAE.
Patient Demographics
• Mean Age: 47.7 years; 56.5% female.
• Common Pathologies: 94.9% had posterior fossa tumors, mainly vestibular schwannomas.
Surgical Approach and Positioning
• Lounging Position: Feet elevated above head to improve venous return.
• Surgical Benefits: Reduced intracranial pressure and improved surgical field visibility.
Risk Factors and Outcomes
• High-Grade VAE: Associated with older age and lower BMI.
• No PFO Contraindication: PFO is not linked to paradoxical embolism in this cohort.
• Outcome Predictors: Preoperative KPS score is most relevant for clinical outcomes.
You must be logged in to post a comment.