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Patients in the lower-risk group generally have a longer survival range of 3–8.8 years, comparied to only 0.8–1.6 years for high-risk patients. [22] In general, the survival rate of transfusion-dependent anemia patients is increasing.
Alpha thalassemia is caused by deficient production of the alpha globin component of hemoglobin, while beta thalassemia is a deficiency in the beta globin component. [7] The severity of alpha and beta thalassemia depends on how many of the four genes for alpha globin or two genes for beta globin are faulty. [2]
Alpha-thalassemia (α-thalassemia, α-thalassaemia) is a form of thalassemia involving the genes HBA1 [5] and HBA2. [6] Thalassemias are a group of inherited blood conditions which result in the impaired production of hemoglobin , the molecule that carries oxygen in the blood. [ 7 ]
Hemoglobin H disease, also called alpha-thalassemia intermedia, is a disease affecting hemoglobin, the oxygen carrying molecule within red blood cells. It is a form of Alpha-thalassemia which most commonly occurs due to deletion of 3 out of 4 of the α-globin genes.
Adult Hb (HbA) is the predominant Hb in children by six months of age and onward; it constitutes 96-97% of total Hb in individuals without a hemoglobinopathy. It is composed of two α globins and two β globins (α 2 β 2). HbA2 is a minor
If the person does not have an HLA-matched compatible donor, there is another method called bone marrow transplantation from haploidentical mother to child (mismatched donor), in which the donor is the mother. The results are these: thalassemia-free survival rate 70%, rejection 23%, and mortality 7%. The best results are with very young people ...
The Mentzer index, described in 1973 by William C. Mentzer, [1] is the MCV divided by the RBC count. It is said to be helpful in differentiating iron deficiency anemia from beta thalassemia trait.
It is also cheap and easy, making regular screening for alpha-thalassemia a plausible possibility. [ 9 ] [ 10 ] Anemia is a factor in fetuses with Hemoglobin Bart's disease as there is an "increased cardiac output" and hypovolemia as the tissues of the fetus require oxygen because of the gamma globulin's high affinity for oxygen.
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