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Sickle cell disease (SCD), also simply called sickle cell, is a group of hemoglobin-related blood disorders typically inherited. The most common type is known as sickle cell anemia. It results in an abnormality in the oxygen-carrying protein haemoglobin found in red blood cells.
Pathophysiology. The development of sickle cell nephropathy (SCN) typically occurs in childhood as seen in the appearance of hyperfiltration and proteinuria. [1] Both are primarily caused by the polymerization of sickle cells in the kidney microvasculature due to the low O 2 tension, high osmolarity, and low acidity. [2]
Sickle cell trait describes a condition in which a person has one abnormal allele of the hemoglobin beta gene (is heterozygous), but does not display the severe symptoms of sickle cell disease that occur in a person who has two copies of that allele (is homozygous).
Sickle cell disease affects about 13,000 Georgians, nearly half living in the Metro Atlanta area. ... The disorder causes normally round, smooth red blood cells, which carry oxygen to the body, to ...
It is a form of sickle cell crisis. Sickle cell anemia – most common in those of African, Hispanic, and Mediterranean origin – leads to sickle cell crisis when the circulation of blood vessels is obstructed by sickled red blood cells, causing ischemic injuries.
Hemoglobin S/thalassemia: common in African and Mediterranean populations, it is clinically similar to sickle-cell anemia, with the additional feature of splenomegaly. [ citation needed ] Hemoglobin C /thalassemia: common in Mediterranean and African populations, hemoglobin C/β o thalassemia causes a moderately severe hemolytic anemia with ...
The acute chest syndrome is a vaso-occlusive crisis of the pulmonary vasculature commonly seen in people with sickle cell anemia. This condition commonly manifests with a new opacification of the lung(s) on a chest x-ray.
Sickle cell disease. In persons with sickle cell disease, high levels of fetal hemoglobin as found in a newborn or as found abnormally in persons with hereditary persistence of fetal hemoglobin, the HbF causes the sickle cell disease to be less severe. In essence the HbF inhibits polymerization of HbS.
Sickle cell disease is a structural red blood cell disorder leading to consequences in multiple systems. It is characterized by chronic red blood cell destruction, vascular injury, and tissue ischemia causing damage to the brain , eyes, heart , lungs , kidneys , spleen , and musculoskeletal system .
Diagnosis is made by first ruling out other causes of hemolytic anemia, such as G6PD, thalassemia, sickle-cell disease. Clinical history is also important to elucidate any underlying illness or medications that may have led to the disease.
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