Pathology 3240A Lecture : Class 16.docx
3 Mar 2014
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Aneurysm: when the blood vessel forms a sac, not tube like anymore, stretching walls, weak, can rupture, when it ruptures it can bleed in cavity, called internal hemorrhage, atherosclerosis, hemorrhage in retroperitoneal space (abdominal aneurysm, congenital, berry aneurysm, in the brain. Presented clinically as: petechiae, 1 2 mm small area of bleeding or hemorrhage, rupture of a capillary or arteriole, site skin subcutaneous tissue. Mucous membranes large, small intestine for ex. serosal surfaces outside of organs, lungs or intestinal surface: purpura, diffuse, superficial hemorrhages in skin, up to 3 5mm, up to 1cm, red, diffuse colour. Fluid loss: diarrhea, excessive urine formation, sweating, heat stroke, vomiting, food poisoning, flu, etc. Inability of heart to pump blood: myocardial infarction, area of heart that is necrotic, ischemia to one area which decreases function, pericardial tamponade, fluid accumulates in the pericardium around the heart.
