Hematologic conditions and normal lab ranges Flashcards
(31 cards)
What is the normal range of leukocytes?
5,000-10,000 cells/mL in the blood
What is leukocytosis
Increased leukocytes
What could leukocytosis indicate?
Ongoing infectious process
What is leukocytopenia?
Decreased leukocytes
What could leukocytopenia indicate?
Indicate immunosuppression or deficiency
What are neutrophils?
Usually first leukocyte to arrive at infection site
What is neutrophilla?
Increased neutrophils
What is neutropenia?
Condition where concentration of neutrophils reaches <1,500 cells/ mL
What could cause neutropilla?
Active infection
What could cause neutropenia?
Medications, radiation, marrow cancers, spleen destruction, or vitamin deficiency, congenital conditions
What is the liquid protein of the body?
Plasma
What are the cells that transport oxygen and CO2?
Erythrocytes
What carries oxygen?
Hemoglobin
What is hematocrit?
The percentage by volume of red blood cells
What triggers clotting when released from damaged cells lining blood vessels at injury site?
Thromboplastin
What dissolves clots once healing has occured?
Plasmin
What is important for clotting?
Thrombocytes (platelets)
What is the process of blood formation?
Hematopoiesis
When does hematopoiesis begin?
During early embryonic development, when only erythrocytes are produced
Later control shifts to liver, spleen, and bone marrow, producing other blood cells
In adults, occurs primarily in the marrow rather than the spleen or liver
What does the lymph system produce?
Lymphocytes
Liver, spleen, lymph nodes, and thymus (plus others) produce monocytes
What is the formation of RBCs in response to hypoxia or ischemia?
Erythropoiesis
What do the kidneys produce?
Erythropoietin
What is the stopping of blood flow?
Hemostasis
What step of hemostasis restricts blood flow to injury?
Vasospasm or vasoconstriction
