Why must hemorrhage be controlled during surgery?
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It obscures the operative field, causes shock, leads to tissue anoxia (especially of the brain and myocardium), delays wound healing, increases the risk of infection, and prevents proper coaptation of wound edges.
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Why must hemorrhage be controlled during surgery?
It obscures the operative field, causes shock, leads to tissue anoxia (especially of the brain and myocardium), delays wound healing, increases the risk of infection, and prevents proper coaptation of wound edges.
What are the effects of hemorrhage on the cardiovascular system?
Hemorrhage is a stress on the cardiovascular system that results in decreased loading of the heart, decreased blood pressure, and decreased perfusion pressure for tissue blood flow.
What is one method of artificial arrest of hemorrhage that involves using a hemostat?
Crushing
What is a collagen-based hemostatic pad used for?
It is used to control bleeding by promoting clot formation.
What technique involves tying the end of a bleeding vessel?
Ligation
What is Hemopatch?
Hemopatch is a type of collagen-based hemostatic dressing designed to enhance hemostasis.
What is the purpose of using a tourniquet in hemorrhage control?
To apply pressure and restrict blood flow to the affected area.
What is the purpose of a hemostatic matrix?
A hemostatic matrix is used to provide a scaffold for clot formation and to facilitate hemostasis.
What is the role of pressure in controlling hemorrhage?
Using gauze sponge or digital compression for 5-10 minutes to stop bleeding.
What is a hemostatic dressing?
A hemostatic dressing is a material applied to a wound to promote blood clotting and control bleeding.
What are the two categories of hemostatic agents mentioned?
Local hemostatic agents and systemic hemostatic agents.
What is a collagen plug?
A collagen plug is a localized hemostatic agent that aids in stopping bleeding by providing a matrix for clot formation.
What method uses electric current for hemorrhage control?
Electrocautery and electrocoagulation.
What are systemic hemostatic agents?
Systemic hemostatic agents, also known as coagulants, can be administered orally (PO), intravenously (IV), or intramuscularly (IM).
What is the role of Vitamin K in hemostasis?
Vitamin K is essential for the synthesis of clotting factors II, VII, IX, and X and is used to treat bleeding due to Vitamin K deficiency and in salicylate poisoning with hemorrhagic complications.
How is fibrinogen used in hemostatic treatment?
Fibrinogen, derived from human plasma, is infused IV to control bleeding in hemophilia, antihemophilic globulin deficiency, and acute fibrinogenic states.
What are local hemostatic agents used for?
They are used for topical, absorbable, quick & effective control of capillary or small vessel bleeding.
What is AHF and its indication?
AHF, or antihemophilic factor, is prepared from plasma and administered IV; it is indicated for use along with fibrinogen in hemophilia A and AHG deficiency.
What is the mechanism of action for local hemostatic agents?
They primarily work through vasoconstriction and platelet aggregation.
What are some examples of vasoconstrictors used in hemostatic treatment?
Examples of vasoconstrictors include desmopressin and adrenochrome monosemicarbazone.
What role does adrenaline play as a local hemostatic agent?
Adrenaline causes vasoconstriction.
What is the function of ethamsylate?
Ethamsylate is used to correct abnormalities of platelet adhesion.
What are some examples of astringents used as local hemostatic agents?
Tannic acid, alum, and ferrous sulfate are examples of astringents that precipitate proteins.
What is the function of thrombin derived from plasma in hemostasis?
Thrombin converts fibrinogen to fibrin, aiding in clot formation.
How does silver nitrate function as a local hemostatic agent?
Silver nitrate acts as a chemical cautery.
What is the purpose of fibrin sealant in hemostasis?
Fibrin sealant provides a meshwork to promote clotting.
What do cellulose strips provide in the context of hemostasis?
Cellulose strips provide a matrix to initiate clot formation.
What is the role of gelatin in local hemostatic agents?
Gelatin provides a physical matrix for clot formation.
How does microfibrillar collagen assist in hemostasis?
Microfibrillar collagen promotes platelet adhesion.
What is the function of calcium alginate dressing in hemostatic control?
Calcium alginate dressing provides calcium for clot formation.
