pathology Flashcards
clinical laboratory science
healthcare profession concerned with collecting samples and performing test to analyze blood, body fluids, tissues, and other substances to determine health or disease; also called medical laboratory science; professionals are clinical laboratory scientist (CLS) and technician (CLT) or medical technologist (MT) and laboratory technician (MLT) depending on credentials
hematology
branch of medicine specializing in treatment of diseases and conditions of blood; physician is hematologist
phlebotomy
involves puncture of (cutting into) a vein in order to remove blood for diagnostic test; also called venipuncture; healthcare professional is phlebotomist
acidosis
abnormal condition where pH of blood is too low (too acidic); may be caused by buildup of acids in the body or a loss of the bodies buffers responsible for stabilizing pH
alkalosis
abnormal condition where pH of blood is too high (too alkaline); may be caused by buildup of buffers in the body or the loss of acids (excessive vomiting of stomach acid)
coagulate
to convert from a liquid to a gel or solid, as in blood coagulation
dyscrasia
General term indicating an abnormal condition affecting blood
hematoma
Collection (mass) of blood under skin as a result of blood escaping into tissue from damaged blood vessels; commonly referred to as bruise
hemorrhage
Abnormal flow of blood out of blood vessel (bleeding)
thrombus
hard collection of fibrin, blood cells, and tissue debris that is end result of hemostasis or blood-clotting process; thrombus is helpful to body by stopping bleeding, as in skin laceration; however, it is hurtful to body if it occurs within a blood vessel, as in myocardial infarction; commonly referred to as a blood clot
hemophilia
hereditary blood disease in which blood clotting time is prolonged due to lack of one vital clotting factor; transmitted by sex-linked traits from females to males, appearing most exclusively in males
pancytopenia
having too few of all cells
septicemia
blood condition of having bacteria or toxins in bloodstream (infection); sepsis is term that means putrefaction or infection; commonly referred to as blood poisoning
anemia
large group of blood conditions characterized by reduction in number (without) a red blood cells or amount of hemoglobin in blood; results in less oxygen reaching tissues
aplastic anemia
Severe form of anemia that develops as a consequence of red bone marrow failing to form enough blood cells; results in decrease in number of all formed elements; treatment may eventually require bone marrow transplant
erythrocytosis
condition of having more than normal number of red blood cells
erythropenia
condition of having too few red blood cells
hemolytic anemia
anemia that develops as result of destruction of erythrocytes
hemolytic disease of the newborn
condition developing in baby when mother‘s blood type is Rh-negative and baby’s blood type is RH positive; antibodies in mother‘s blood enter fetus’ bloodstream through placenta and destroy fetus’ red blood cells, causing anemia, jaundice, and enlargement of liver and spleen; treatment is early diagnosis and blood transfusion; also called erythroblastosis fetalis
hemolytic reaction
destruction of patient’s erythrocytes that occurs when receiving a transfusion of incompatible blood type; also called transfusion reaction
hypochromic anemia
anemia, resulting from having insufficient hemoglobin in erythrocytes; named because hemoglobin molecule is responsible for dark red color of erythrocyte
iron-deficiency anemia
anemia resulting from not having sufficient iron to manufacture hemoglobin
pernicious anemia
anemia associated with insufficient absorption of vitamin B12 by digestive system; vitamin B 12 is necessary for erythrocyte production
polycythemia vera
condition of producing too many red blood cells by bone marrow; blood becomes too thick to easily flow through blood vessels
sickle cell anemia
genetic blood condition in which erythrocytes take on abnormal curved or “sickle” shape; cells are fragile and are easily damaged, leading to hemolytic anemia
thalassemia
genetic blood condition in which body is unable to make functioning hemoglobin, resulting in anemia
leukemia
Cancerous blood condition located in red bone marrow tissue responsible for producing white blood cells; results in large number of abnormal and immature leukocytes circulating in bloodstream
leukocytosis
condition of having more than normal number of white blood cells
leukopenia
condition of having too few white blood cells
lymphocytic leukemia
type of leukemia in which abnormal white blood cells are lymphocytes; may be acute (rapid onset and progression) or chronic (slow onset and progression)
myeloid leukemia
type of leukemia in which abnormal leukocytes are granulocytes (usually neutrophils); maybe acute (rapid onset and progression) or chronic (slow onset and progression)
thrombocytopenia
condition of having too few platelets (clotting cells)
thrombocytosis
condition of having more than normal number of platelets