PMID- 36238531 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20221015 IS - 2364-3722 (Print) IS - 2196-9736 (Electronic) IS - 2196-9736 (Linking) VI - 10 IP - 8 DP - 2022 Aug TI - Hemostatic powders for gastrointestinal bleeding: a review of old, new, and emerging agents in a rapidly advancing field. PG - E1136-E1146 LID - 10.1055/a-1836-8962 [doi] AB - Background and study aims Hemostatic powders are increasingly used to address limitations in conventional endoscopic techniques for gastrointestinal bleeding. Various agents exist with different compositions, characteristics, efficacy, and adverse events (AEs). We sought to review existing hemostatic powders, from preclinical to established agents. Methods A literature review on hemostatic powders for gastrointestinal bleeding was undertaken through a MEDLINE search from 2000-2021 and hand searching of articles. Relevant literature was critically appraised and reviewed for mechanism of action, hemostasis and rebleeding rate, factors associated with hemostatic failure, and AEs. Results The most established agents are TC-325 (Hemospray), EndoClot, and Ankaferd Blood Stopper (ABS). These agents have been successfully applied to a variety of upper and lower gastrointestinal bleeding etiologies, in the form of primary, combination, salvage, and bridging therapy. Few AEs have been reported, including visceral perforation, venous embolism, and self-limited abdominal pain. Newer agents include CEGP-003 and UI-EWD, which have shown results similar to those for the older agents in initial clinical studies. All aforementioned powders have high immediate hemostasis rates, particularly in scenarios not amenable to conventional endoscopic methods, but are limited by significant rates of rebleeding. Other treatments include TDM-621 (PuraStat) consisting of a liquid hemostatic agent newly applied to endoscopy and self-propelling thrombin powder (CounterFlow Powder), a preclinical but promising agent. Conclusions Rapid development of hemostatic powders and growing clinical expertise has established these agents as a valuable strategy in gastrointestinal bleeding. Further research will continue to refine the efficacy and applicability of these agents. CI - The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/). FAU - Jiang, Shirley X AU - Jiang SX AUID- ORCID: 0000-0003-0164-0619 AD - Department of Medicine, University of British Columbia, Vancouver, BC, Canada. FAU - Chahal, Daljeet AU - Chahal D AD - Division of Gastroenterology, Mount Sinai Hospital, New York, New York, United States. FAU - Ali-Mohamad, Nabil AU - Ali-Mohamad N AD - Michael Smith Laboratories, University of British Columbia, Vancouver, BC, Canada. AD - Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada. FAU - Kastrup, Christian AU - Kastrup C AD - Michael Smith Laboratories, University of British Columbia, Vancouver, BC, Canada. AD - Blood Research Institute, Versiti, Milwaukee, Wisconsin, United States. FAU - Donnellan, Fergal AU - Donnellan F AD - Division of Gastroenterology, University of British Columbia, Vancouver General Hospital, Vancouver, BC, Canada. LA - eng PT - Journal Article PT - Review DEP - 20220815 PL - Germany TA - Endosc Int Open JT - Endoscopy international open JID - 101639919 PMC - PMC9552790 COIS- Competing interests Dr. Kastrup is the inventor on patents and intellectual property, and Dr. Ali-Mohamad, Dr. Donnellan, and Dr. Kastrup are involved in commercialization activities related to self-propelling thrombin powder. EDAT- 2022/10/15 06:00 MHDA- 2022/10/15 06:01 PMCR- 2022/08/01 CRDT- 2022/10/14 03:07 PHST- 2022/01/15 00:00 [received] PHST- 2022/04/20 00:00 [accepted] PHST- 2022/10/14 03:07 [entrez] PHST- 2022/10/15 06:00 [pubmed] PHST- 2022/10/15 06:01 [medline] PHST- 2022/08/01 00:00 [pmc-release] AID - 10.1055/a-1836-8962 [doi] PST - epublish SO - Endosc Int Open. 2022 Aug 15;10(8):E1136-E1146. doi: 10.1055/a-1836-8962. eCollection 2022 Aug.