Background: Endoscopic resection has become the standard treatment for noninvasive gastrointestinal malignancies. In flat mucosal tumors, normal saline is frequently used for submucosal fluid injection in order to reduce the risk of complications during endoscopic resection. Recent studies have demonstrated longer-lasting mucosa elevation by injection of agents such as hyaluronic acid or glyceol, rather than normal saline. We investigated the efficacy of different blood components in comparison with other solutions for use as a submucosal fluid cushion.
Methods: Normal saline, sodium hyaluronate, glyceol, hydroxyethyl starch, serum, plasma, and whole blood were evaluated for their effectiveness in creating a submucosal cushion. One milliliter of each solution was injected into the submucosa of 5 × 5 cm specimens of resected porcine stomach. Mucosa elevation was measured before and up to 60 minutes after injection.
Results: The shortest duration of mucosa elevation was observed after injection of normal saline, glyceol, and 0.125% hyaluronic acid. A significantly longer duration was obtained after injection of hydroxyethyl starch, 0.25% and 0.5% hyaluronic acid, serum, and plasma. However, whole blood generated a longer-lasting mucosa elevation than all other agents.
Conclusion: The results of the current study suggest that whole blood is more effective in generating long-lasting mucosa elevation than any other commonly used solution. Because autologous blood is readily available at almost no cost, this seems to be an optimal agent for creating the mucosa elevation needed for endoscopic resection. Further in vivo studies in humans are needed to clarify the potential role of autologous blood for long-lasting endoscopic mucosa resection or endoscopic submucosal dissection.
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| http://dx.doi.org/10.2147/CEG.S29704 | DOI Listing |
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