# Ventricular Fibrillation during Optical Coherence Tomography

## TL;DR

A patient experienced ventricular fibrillation during an OCT procedure, prompting an investigation into the possible causes of this rare complication.

## Contribution

The study provides a detailed analysis of a rare case of ventricular fibrillation during OCT imaging.

## Key findings

- Ventricular fibrillation occurred during OCT imaging despite continuous ECG monitoring.
- Alterations in the ECG were observed before the onset of ventricular fibrillation.
- The study highlights the need to understand the mechanisms behind OCT-related arrhythmias.

## Abstract

Optical Coherence Tomography (OCT) imaging is a valuable tool for complex coronary interventions. While complications are rare, the occurrence of ventricular arrhythmias during its use is one of the most feared. Unfortunately, the mechanism by which these arrhythmias arise remains unclear. We describe the case of a patient under continuous electrocardiographic (ECG) monitoring who experienced ventricular fibrillation during an OCT procedure. A detailed analysis of the ECG event sequence was performed, from the administration of the contrast medium to the onset of ventricular fibrillation. Utilizing the collected data, we examined potential precipitating factors based on the observed alterations in the electrocardiogram. A comprehensive understanding of the mechanisms underlying these arrhythmias is crucial for the development of preventive measures that avoid such incidents in the future.