Related Experiment Video
Updated: Aug 13, 2026

Full-root Aortic Valve Replacement by Stentless Aortic Xenografts in Patients with Small Aortic Roots
Published on: May 21, 2017
The platelet componentof hemostasis in aortic surgery
M A Charnaia1, Iu A Morozov, V G Gladysheva
1Russian Scientific Center of Surgery, RAMS, Moscow, Russia.
The lack of significant changes in the count and function of platelets in aortic surgery without use of cardiopulmonary bypass (CPB) confirms that factors of extracorporeal circulation exert a remarkable adverse action on the platelet component of hemostasis. In operations performed under hypothermic perfusion or circulatory arrest, disorders of the platelet component even in case of the use of 2 mln. CIU trasylol (aprotinin) are most pronounced which gives rise to excessive postoperative blood loss in the given patient group. It may be assumed that the increase of the dose of trasylol up to 6 mln. CIU will allow, owing to its cytoprotective action, preserve as well as possible the quantitative and qualitative properties of platelets.
The lack of significant changes in the count and function of platelets in aortic surgery without use of cardiopulmonary bypass (CPB) confirms that factors of extracorporeal circulation exert a remarkable adverse action on the platelet component of hemostasis. In operations performed under hypothermic perfusion or circulatory arrest, disorders of the platelet component even in case of the use of 2 mln. CIU trasylol (aprotinin) are most pronounced which gives rise to excessive postoperative blood loss in the given patient group. It may be assumed that the increase of the dose of trasylol up to 6 mln. CIU will allow, owing to its cytoprotective action, preserve as well as possible the quantitative and qualitative properties of platelets.
Related Concept Videos
Formation of the Platelet Plug
As the injured blood vessel contracts, endothelial cells undergo contraction, revealing collagen fibers in the basement membrane and underlying connective tissue. Furthermore, the plasma membrane of endothelial cells becomes adhesive, preparing the site for platelet adhesion. Platelets...
Introduction to Hemostasis
The three phases of hemostasis involve many clotting factors present in plasma and several substances released by platelets and injured tissue cells. It is a fast, localized, and...
Aneurysm IV: Nursing Management
Clot Retraction and Fibrinolysis
Coagulation
During the coagulation phase, clotting factors, or procoagulants, play a vital role in initiating and progressing the coagulation cascade. This cascade is a series of reactions...
Aneurysm III: Interprofessional Care
