Describes the Von Willebrand factor: In a plasma protein that is found in the granules to the platelet. Contributes to platelet adhesion and helps to maintain plasma levels of factor VIII - C platelet coagulation indices and list them: Platelet indices are autoanalizadotes hematological offering a series of parameters relating to the following plaquetas.Destacan : plateletcrit (PTC or PCT), mean platelet volume (MPV or MPV), platelet distribution width (PDW) Describe the plateletcrit: The volume occupied by occupied by platelets and whole blood, expressed in value porcentaje.El of normal platelets is between 0.12 and 0.36% Describe the formula used for calculating the platelet distribution width, and what are their normal values:The coefficient of variation of volumes of platelets is equal to the geometric standard deviation of the volumes of platelets between mean platelet volume multiplied by 100. Its normal value should range between 25 and 65% Tema3: Causes of altered platelet: Alteracionesmorfológicas; Artifacts Platelet; disturbances number; disorders of function. It lists and describes the morphological changes megatrombocitosis. Megatrombocitosis; Microtrombocitosis; Anisocytosis trombocitaria; Hipogranulación trombocitaria. Megatrombocitosis: Consists of the appearance in the peripheral blood platelet giants;
Not Varol, if megatrombocitos
represent less than 3% of the entire platelet population, usually indicates the presence of blood platelets immature megatrombocitos are also abundant in blood of subjects suffering from certain disease processes (absence of spleen, myeloproliferative syndromes, Bernard-Soulier syndrome, May-Hegglin disease, Chediak-Higashi syndrome).