Anemia

22/04/2011

results statistics we have collected

04/04/2011

Sickle Cell Anemia. Written by Paulo César Naoum and Alia F. M. Naoum. A São José do Rio Preto's Science and Technology Academy video. www.ciencianews.com.br Animated by Birdo Studio www.birdo.com.br Full Credits: Production: Birdo Script: Dr. Paulo César Naoum, Aliá F. M. Naoum Direction: Luci

04/04/2011

An Aflac Cancer Center and Blood Disorders Service of Children's Healthcare of Atlanta physician talks about sickle cell disease and how it affects the body. http://www.choa.org/sicklecell

04/04/2011

Sickle cell anemia is a genetic disease that affects hemoglobin, the oxygen transport molecule in the blood. Originally created for DNA Interactive ( http://www.dnai.org ). TRANSCRIPT: Sickle cell anemia is a genetic disease that affects hemoglobin, the oxygen transport molecule in the blood. The

04/04/2011

Blood is a specialized fluid in your body that has four main components, each with a different function: plasma, red blood cells, white blood cells, and platelets. Watch this video to learn more about how these components work. For more information on blood and its disorders, visit ASH's patient res

04/04/2011

Animacion sobre la anemia Falciforme, donde se describe la aparicion de Eritrocitos en forma de Hoz o Drepanocitos

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Diagnosis
Anemia is typically diagnosed on a complete blood count. Apart from reporting the number of red blood cells and the hemoglobin level, the automatic counters also measure the size of the red blood cells by flow cytometry, which is an important tool in distinguishing between the causes of anemia. Examination of a stained blood smear using a microscope can also be helpful, and is sometimes a necessity in regions of the world where automated analysis is less accessible.
In modern counters, four parameters (RBC count, hemoglobin concentration, MCV and RDW) are measured, allowing others (hematocrit, MCH and MCHC) to be calculated, and compared to values adjusted for age and s*x. Some counters estimate hematocrit from direct measurements.
Reticulocyte counts, and the "kinetic" approach to anemia, have become more common than in the past in the large medical centers of the United States and some other wealthy nations, in part because some automatic counters now have the capacity to include reticulocyte counts. A reticulocyte count is a quantitative measure of the bone marrow's production of new red blood cells. The reticulocyte production index is a calculation of the ratio between the level of anemia and the extent to which the reticulocyte count has risen in response. If the degree of anemia is significant, even a "normal" reticulocyte count actually may reflect an inadequate response.
If an automated count is not available, a reticulocyte count can be done manually following special staining of the blood film. In manual examination, activity of the bone marrow can also be gauged qualitatively by subtle changes in the numbers and the morphology of young RBCs by examination under a microscope. Newly formed RBCs are usually slightly larger than older RBCs and show polychromasia. Even where the source of blood loss is obvious, evaluation of erythropoiesis can help assess whether the bone marrow will be able to compensate for the loss, and at what rate.
When the cause is not obvious, clinicians use other tests: ESR, ferritin, serum iron, transferrin, RBC folate level, serum vitamin B12, hemoglobin electrophoresis, renal function tests (e.g. serum creatinine).
When the diagnosis remains difficult, a bone marrow examination allows direct examination of the precursors to red cells.

03/04/2011

Signs and symptoms
Anemia goes undetermined in many people, and symptoms can be minor or vague. The signs and symptoms can be related to the anemia itself, or the underlying cause.
Most commonly, people with anemia report non-specific symptoms of a feeling of weakness, or fatigue, general malaise and sometimes poor concentration. They may also report dyspnea (shortness of breath) on exertion. In very severe anemia, the body may compensate for the lack of oxygen-carrying capability of the blood by increasing cardiac output. The patient may have symptoms related to this, such as palpitations, angina (if preexisting heart disease is present), intermittent claudication of the legs, and symptoms of heart failure.
On examination, the signs exhibited may include pallor (pale skin, mucosal linings and nail beds) but this is not a reliable sign. There may be signs of specific causes of anemia, e.g., koilonychia (in iron deficiency), jaundice (when anemia results from abnormal break down of red blood cells — in hemolytic anemia), bone deformities (found in thalassaemia major) or leg ulcers (seen in Sickle-cell disease).
In severe anemia, there may be signs of a hyperdynamic circulation: a fast heart rate (tachycardia), bounding pulse, flow murmurs, and cardiac ventricular hypertrophy (enlargement). There may be signs of heart failure.
Pica, the consumption of non-food based items such as dirt, paper, wax, grass, ice, and hair, may be a symptom of iron deficiency, although it occurs often in those who have normal levels of hemoglobin.
Chronic anemia may result in behavioral disturbances in children as a direct result of impaired neurological development in infants, and reduced scholastic performance in children of school age.
Restless legs syndrome is more common in those with iron-deficiency anemia.
Less common symptoms may include swelling of the legs or arms, chronic heartburn, vague bruises, vomiting, increased sweating, and blood in stool.

02/04/2011

هي مرض وراثي من أمراض الدم تسبب حدوث نوبات من الالم الشديد وسهولة التعرض لحالات العدوى ، وانيميا التحلل الدموي المزمنة ، وتلف الاعضاء ، وفي بعض الحالات الوفاة. مع تحيات : البوابة الصحية www.hgate.net ترجمة وإعداد : الدكتورة shoso