Prospective Analysis of Adverse Events in Intracranial Tumor Surgery

Overview

This prospective study of 1173 adult patients undergoing intracranial tumor surgery revealed a relatively low overall adverse event (AE) rate of 12.7% and a revision surgery rate of 4.2%. Wound events, postoperative infections, neurological deficits, and surgical goal failures were systematically documented and classified using the Clavien-Dindo system to enhance quality metrics and mortality mitigation strategies.

Background

Brain tumor surgery remains a high-risk area within neurosurgery despite advances in imaging, intraoperative navigation, and neuromonitoring. Adverse events (AEs) can cause permanent disability, prolonged hospitalization, and increased healthcare costs. Prospective documentation and classification of AEs, such as with the Clavien-Dindo classification, are essential for improving patient outcomes and tailoring risk management. This study addresses the lack of prospective data by analyzing AEs in a large tertiary center to refine quality assessment in brain tumor surgery.

Data Highlights

Key Findings

• The overall incidence of surgery-related adverse events was 12.7%, indicating a relatively low complication rate in this tertiary center.
• Elective surgeries constituted the majority (93.4%) of cases, with emergency surgeries accounting for 13.9%.
• Meningiomas and gliomas were the predominant tumor types treated, representing 31.1% and 28.2% of cases respectively.
• Wound events occurred across various tumor types, notably in 2.1% of glioma patients and several cases in meningioma and metastasis patients.
• The Clavien-Dindo classification system was effectively utilized to categorize the severity of adverse events, facilitating structured morbidity and mortality reviews.
• Prospective data collection and multidisciplinary morbidity and mortality conferences contributed to comprehensive AE documentation and potential reduction in incidence.

Clinical Implications

Prospective and systematic documentation of adverse events using standardized classifications like Clavien-Dindo can improve the quality of neurosurgical care by enabling targeted risk mitigation strategies. Multidisciplinary review of complex cases supports continuous quality improvement and patient safety. Clinicians should incorporate detailed AE monitoring and patient-informed consent processes to better manage expectations and outcomes in intracranial tumor surgery.

Conclusion

This prospective analysis highlights the feasibility and benefits of structured AE documentation in intracranial tumor surgery, demonstrating a low complication rate and providing a framework for ongoing quality improvement and mortality risk reduction in neurosurgical practice.

References

1. Dao Trong et al. 2022 -- Prospective AE Documentation in Neurosurgery
2. Lenga et al. 2022 -- Clavien-Dindo Classification in Brain Tumor Surgery
3. Additional references [2, 7, 10, 16, 17, 19, 20, 22, 25, 29, 30, 32, 36] as cited in source