Vascular Repair for Iatrogenic Injury during Microsurgical Procedures: Clinical Investigation and Review of 18 Cases at a Single Institution

Abstract

Background Intracranial vascular injury (VI) due to surgery is a critical complication that can lead to serious neurologic deficits. To our knowledge, only a few review articles on VI during an operation have been published so far. We retrospectively investigated the type, cause, and measurement of VI during surgery at our institution.

Methods Unexpected VI cases occurred in 18 of 2,228 craniotomy procedures, including 794 aneurysm clippings and 357 tumor resections. We investigated the causes and coping techniques of the VI cases, as well as their full details.

Results There were six cases of aneurysm neck tear, one case of sylvian vein injury, and one case of superior trunk perforation during direct clipping. Regarding tumor resection procedures, nine cases of arterial injury and one case of cortical vein injury were extracted. Almost all VIs were caused by carelessness or basic manipulation mistakes. We repaired all these cases with simple placement of suture threads with or without pinch clips, flow alteration using bypass techniques, and in 16 cases no neurologic deficit or deterioration on imaging occurred; however, 3 patients were verified to have ischemic changes on postoperative imaging.

Conclusions Most VIs were directly caused by a simple error and carelessness of an operator or an assistant. Many of these injuries can be avoided if a basic set of rules are followed and remembered during the surgical procedure. However, the surgical procedure involves human work, and errors cannot be eradicated even upon maximum concentration levels. Neurosurgeons should be prepared for an eventual quick repair of an unexpected cerebral VI.

Keywords

preventable medical errors - iatrogenic vascular injury - surgical complication - technical trouble

Ethical Approval and Consent to Participate

All the procedures in this study were performed in accordance with the 1964 Declaration of Helsinki. A series of treatments were performed after obtaining appropriate written informed consent from the patients, and the requirement for additional written consent for inclusion in this study was waived by the Ethics Committee of Saiseikai Shiga Hospital (permission number: 515) because of the retrospective and observational nature of the study.

Author Contributions

All the authors contributed to the conception and design of the study. Material preparation and data collection were performed by all the authors. Data analysis was performed by S.Y. The first draft of the manuscript was written by S.Y., and all the authors commented on the previous versions of the manuscript. All the authors read and approved the final manuscript.

Publication History

Received: 01 February 2023

Accepted: 14 August 2023

Accepted Manuscript online:
18 August 2023

Article published online:
13 October 2023

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