Freeman David E
Department of Large Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL, United States.
Front Vet Sci. 2021 Mar 1;8:626081. doi: 10.3389/fvets.2021.626081. eCollection 2021.
Maintenance fluid therapy is challenging in horses that cannot drink or are denied feed and water because of concerns about gastrointestinal tract function and patency. Intravenous fluid delivery to meet water needs based on current recommendations for maintenance requirements were obtained in fed horses and therefore might not apply to horses that are not being fed. This is a critical flaw because of the interdependence between intestinal tract water and extracellular water to support digestion while preserving water balance, a concept explained by the enterosystemic cycle. Because horses drink less when they are not eating and hence have lower water needs than fed horses, maintenance water requirements need to be adjusted accordingly. This article reviews this topic and identifies benefits of adjusting maintenance fluid therapy to meet lower demands from gastrointestinal function, such as reduced volumes, lower cost, avoidance of overhydration.
对于那些无法饮水或因担心胃肠道功能和通畅性而被禁食禁水的马匹，维持性液体疗法具有挑战性。根据目前对维持需求的建议，通过静脉输液来满足饮水需求的数据是在进食的马匹中获得的，因此可能不适用于未进食的马匹。这是一个关键缺陷，因为肠道水和细胞外水之间相互依存以支持消化并维持水平衡，这一概念由肠-体循环解释。由于马匹在不进食时饮水量减少，因此与进食的马匹相比水需求较低，维持水需求需要相应调整。本文综述了这一主题，并指出调整维持性液体疗法以满足胃肠道功能较低需求的益处，如减少液体量、降低成本、避免补液过量。
