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Erschienen in:
14.09.2020 | Original Article
A method to identify pulmonary intersegmental planes with intravenous vitamin B2 injection
Erschienen in: Surgery Today | Ausgabe 5/2021
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Purpose
The present study investigated whether the pulmonary intersegmental planes could be identified with the intravenous injection of vitamin B2 using a fluorescent camera and whether this method can be used instead of the inflation–deflation technique or the intravenous indocyanine green (ICG) method.
Methods
In experiment 1, the vitamin B2 was intravenously injected to visualize the pulmonary intersegmental plane and perform segmentectomy, and the visualized pulmonary intersegmental line was then compared to the inflation–deflation line in six pigs. In experiment 2, using six pigs, the fluorescent area and duration of fluorescence were compared after the intravenous injection of vitamin B2 and ICG in the same animals.
Results
In all animals in experiment 1, it was possible to clearly detect yellow–green fluorescence in the lung, in segments other than the one intended for resection, for at least 60 min. Moreover, the line visualized with vitamin B2 fluorescence matched the inflation–deflation line in all animals. In experiment 2, the area of vitamin B2 fluorescence corresponded to the area of ICG fluorescence in each animal.
Conclusions
The visualization of fluorescence after the intravenous injection of vitamin B2 using a fluorescent camera was a simple, safe, and accurate method for detecting intersegmental planes in a pig model. This method can be an alternative to the inflation–deflation technique and the intravenous ICG method.