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blood count
blood count method for determining the number of red (erythrocytes) and white (leukocytes) blood cells in a certain volume of blood. This test can be used as a preliminary step in diagnosing some diseases. Leukemia, for instance, causes an increase in the white blood cell count, while a decrease in... Read more |
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Platelets
Platelet count Definition A platelet count is a diagnostic test that determines the number of platelets in the patient's blood. Platelets, which are also called thrombocytes, are small disk-shaped blood cells produced in the bone marrow and involved in the process of blood... Read more |
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Tetralogy of Fallot
Tetralogy of Fallot Definition Tetralogy of Fallot is a common syndrome of congenital heart defects. Description The heart is two pumps in one. The ventricle on the left side pumps blood full of oxygen through the body; the ventricle on the right side pumps the same blood... Read more |
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Absenteeism
Absenteeism Absenteeism is the term generally used to refer to unscheduled employee absences from the workplace. Many causes of absenteeism are legitimate—personal illness or family issues, for example—but absenteeism can also be tra... Read more |
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appendix
appendix small, worm-shaped blind tube, about 3 in. (7.6 cm) long and 1/4 in. to 1 in. (.64-2.54 cm) thick, projecting from the cecum (part of the large intestine) on the right side of the lower abdominal cavity. The structure, also called the vermiform appendix, has no function in people and... Read more |
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White Blood Cell Count and Differential
White blood cell count and differential Definition A white blood cell (WBC) count determines the concentration of white blood cells in the patient's blood. A differential determines the percentage of each of the five types of mature white blood cells. Purpose This test is... Read more |
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absentee landlord
Landlords, Absentee The term “absentee landlord” describes the situation where a person with the ultimate ownership of land |
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Pacemakers
Pacemaker The pacemaker is an electronic biomedical device that can regulate the human heartbeat when its natural regulating mechanisms break down. It is a small box surgically implanted in the chest cavity and has electrodes that are in direct contact with the heart. First... Read more |
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Reticulocyte Count
Reticulocyte Count Definition A reticulocyte count is a blood test performed to assess the body's production of immature red blood cells (reticulocytes). A reticulocyte count is usually performed when patients are evaluated for anemia and response to its treatment. It is sometimes called a retic... Read more |
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