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Iron overload (also known as haemochromatosis or hemochromatosis) is the abnormal and increased accumulation of total iron in the body, leading to organ damage. [1] The primary mechanism of organ damage is oxidative stress, as elevated intracellular iron levels increase free radical formation via the Fenton reaction.
Iron accumulates in the liver and heart, but also endocrine organs. Frequent blood transfusions may be given to many patients, such as those with thalassemia , sickle cell disease , leukemia , aplastic anemia , or myelodysplastic syndrome , among others.
Iron poisoning can occur when doses of 20 to 60 mg/kg or more of elemental iron is ingested with most cases reporting primarily gastrointestinal symptoms. [4] Systemic signs and symptoms shown in serious toxicity occur at higher doses exceeding 60 mg/kg. [5] Ingesting above 120 mg/kg may be fatal. [4]
Injection site reactions (ISRs) are reactions that occur at the site of injection of a drug. They may be mild or severe and may or may not require medical intervention. Some reactions may appear immediately after injection, and some may be delayed. [1] Such reactions can occur with subcutaneous, intramuscular, or intravenous administration.
Over time, iron stores increase, and individuals with type 4A hemochromatosis may develop hepatic fibrosis. [3] The symptoms of type 4B hemochromatosis tend to be more severe. They resemble the symptoms of hemochromatosis types 1, 2, and 3. Plasma iron concentration is elevated, and symptoms include joint pain, diabetes, and arrhythmia.
[1] [2] [3] IV iron infusions are recommended when oral iron supplementation fails to adequately restore iron and haemoglobin levels in the blood. The intravenous method is a fast and effective way of delivering iron throughout the body, used as iron can be administered instantly rather than gradually over time.
New RSV vaccines are now available to help prevent serious infection in people over 60. Doctors explain the RSV vaccine and its side effects in older adults.
Febrile non-hemolytic transfusion reaction (FNHTR) is the most common type of transfusion reaction. It is a benign occurrence with symptoms that include fever but not directly related with hemolysis. [1] It is caused by cytokine release from leukocytes within the donor product as a consequence of white blood cell breakdown.