BLEEDING DISORDERS DUE TO VASCULAR DEFECTS Flashcards
memorization
A connective tissue disorder is characterized by hyperextensible joints and hyperplastic skin. The defect may lie in a peptidase enzyme deficiency that converts procollagen to collagen
Ehlers-Danlos Syndrome
Connective tissue elastic fibers in small arteries are calcified and structurally abnormal. Subarachnoid and gastrointestinal bleeding are the most common cause of death
Pseudoxanthoma Elasticum
Acquired disorder of dietary deficiency of vitamin C. (vitamin C deficiency)
Scurvy
The aging process brings about the degeneration of collagen, elastin, and subcutaneous fat
Senile purpura
Characterized by vascular malformations and surface skin lesions; The small blood vessels are focally disorganized and dilated throughout the body, their wall support is poor, and their ability to contract is diminished
Hereditary Hemorrhagic Telangiectasia
A disorder associated with tumors composed of vessels that commonly swell and bleed at the surface
Congenital Hemangiomata (Kasabach-Meritt Syndrome)
The large vessels may become atherosclerotic, and the capillary basement membrane may thicken, thus blocking the normal flow of blood; Most often affected are the glomerulus and retina
Diabetes mellitus
It can involve and obstruct the function of many organs, including the vascular system, in which there is deposition of the fibrillar protein called amyloid
Amyloidosis
Damage caused by autoimmune of infectious agents to the endothelial lining of the blood vessel may lead to hypercoagulation or hypocoagulation
Endothelial damage
purpura associated with abdominal pain secondary to GIT hemorrhaging
HENOCH
purpura associated with joint pain, especially in the knees and ankles
SCHONLEIN