Use of hemostatic powder (Hemospray) in the management of refractory gastric variceal hemorrhage
22. März 2013 (online)
Hemospray (Cook Medical, Winston – Salem, North Carolina, USA) is a novel powder licensed for endoscopic treatment of nonvariceal upper gastrointestinal bleeding (UGIB). It acts by forming a barrier over the bleeding site, increasing local concentration of clotting factors and activating the intrinsic clotting cascade . Hemospray has been shown to be effective in peptic ulcer bleeding and other nonvariceal sources of UGIB    . We report its use in the management of gastric variceal bleeding refractory to injection of Histoacryl (n-butyl cyanoacrylate; Braun Medical, Sheffield, UK), acting as a bridge towards a transjugular intrahepatic portosystemic shunt (TIPS) procedure.
A 37-year-old man presented with hematemesis. Endoscopy revealed bleeding gastric fundal varices (isolated type 1 gastric varices; [Fig. 1]). These were injected using a mixture of Histoacryl and Lipiodol (iodized oil; Guerbet, Aulnay-sous-Bois, France). Immediate hemostasis was not obtained, so a further 1.2 ml of this mixture was applied ([Fig. 2]). However, bleeding continued ([Fig. 3]), therefore a decision was made to apply Hemospray, resulting in immediate hemostasis ([Fig. 4]). A TIPS for prevention of variceal rebleeding was performed 4 days later.
The recommended endoscopic therapy of bleeding gastric varices is injection of Histoacryl or thrombin. If this is unsuccessful, emergency TIPS procedure is indicated; however, in many centers the availability of emergency TIPS insertion is variable.
Theoretical concerns exist regarding embolization of Hemospray when treating variceal bleeding, due to the pressurized delivery system and the numerous shunts in these patients. Our patient had no complications of Hemospray application, and no embolization of the powder was detected clinically or on subsequent imaging.
In view of the large variceal size and multiple feeding vessels often found in gastric varices, it is unlikely that Hemospray would provide definitive treatment for bleeding from this source. However, it may offer endoscopists an alternative therapeutic strategy for patients with bleeding uncontrolled by Histoacryl or thrombin injection, and in selected patients, provide a bridge towards TIPS insertion.
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