“…The most advanced gelatin‐based products consist on a combination of gelatin with other HAs, mostly biological agents like thrombin, and the processing of gelatin in different physical forms to broaden its range of applications (Bak et al, 2004; Echave, Oyagüez, & Casado, 2014; Frantz, 1946). Two examples of HAs in combination with gelatin and thrombin are FloSeal® (Rane et al, 2010) Hemostatic Matrix and Surgiflo®, composed of bovine and porcine‐derived gelatin, respectively, and human‐derived thrombin, which are nowadays routinely used by surgeons in many hospitals to aid in hemostasis control during LPN (Echave et al, 2014; Frantz, 1946; Gazzeri, Galarza, Morabito, et al, 2018; Hutchinson et al, 2015; Nogueira, Katz, Pinochet, Kurta, & Coleman, 2008). The mechanisms of action of these two products are similar, as both accelerate the clot formation by the activation of patients' endogenous fibrinogen, promoted by thrombin, and clot formation and platelet activation provided by the gelatin component.…”