J.Jpn. Surg. Soc.. 84(5): 404-417, 1983

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Original article

EXPERIMENTAL STUDIES ON BLOOD FLOW IN THE GASTRIC TUBE FOR ESOPHAGEAL RECONSTRUCTION

Various types of gastric tubes for esophageal substitute were constructed and their advantages and disadvantages were compared. The most important point in esophageal reconstruction is to obtain a gastric tube with sufficient blood supply and with adequate length for the reconstruction.
The author constructed 4 types of gastric tube in dogs, that is, whole stomach (A) and gastric tubes with 6 cm (B), 3 cm (C) and 1.5 cm (D) in width respectively, dissecting the lesser curvature side of the stomach to the various extents. The tissue blood flow was measured at the point 3 cm oral from the uppermost pulsation of right gastroepiploic artery using a hydrogen clearance method.
The flow rates were found to be 32.8, 30.9, 50.9 and 27.9ml/min/100g in gastric tubes A, B, C and D, respectively. It was also found that the blood flow rates in the right gastroepiploic artery were nearly the same in tubes A, B and C, but it decreased remarkably in tube D.
Histologic study revealed that the microvasculature of the gastric tube A, B and C was well preserved although that of the tube D was damaged to some extent, resulting in decreased circulation in site.
These results clearly indicated that the gastric tube C with 3 cm width is the best choice among the various types of gastric tubes compared, giving adequate blood supply and sufficient lenght to meet any route in esophageal reconstruction.

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