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Hematocrit levels that are too high or too low can indicate a blood disorder, dehydration, or other medical conditions. [4] An abnormally low hematocrit may suggest anemia , a decrease in the total amount of red blood cells, while an abnormally high hematocrit is called polycythemia . [ 5 ]
Polycythemia is defined as serum hematocrit (Hct) or hemoglobin (HgB) exceeding normal ranges expected for age and sex, typically Hct >49% in healthy adult men and >48% in women, or HgB >16.5 g/dL in men or >16.0 g/dL in women. [8] The definition is different for neonates and varies by age in children. [9] [10]
Symptoms: Feeling tired, shortness of breath, pale skin, lightheadedness, fast heart rate, chest pain, burning or numbness, and depression: Causes: Nutritional disorder: Diagnostic method: FBC- Red blood cell count, Hemoglobin and hematocrit levels. Grouping and crosshatching. Serum for vitamin B12 diagnosis. Bone marrow aspiration.
In oncology, polycythemia vera (PV) is an uncommon myeloproliferative neoplasm in which the bone marrow makes too many red blood cells. [1] The majority of cases [2] are caused by mutations in the JAK2 gene, most commonly resulting in a single amino acid change in its protein product from valine to phenylalanine at position 617.
Severe symptoms include confusion, muscle twitching, and bleeding in or around the brain. [1] [2] Normal serum sodium levels are 135–145 mmol/L (135–145 mEq/L). [5] Hypernatremia is generally defined as a serum sodium level of more than 145 mmol/L. [3] Severe symptoms typically only occur when levels are above 160 mmol/L. [1]
In children, compensation can result in an artificially high blood pressure despite hypovolemia (a decrease in blood volume). Children typically are able to compensate (maintain blood pressure despite hypovolemia) for a longer period than adults, but deteriorate rapidly and severely once they are unable to compensate ( decompensate ). [ 14 ]
A vitamin B12 level of less than 200 pg/mL is considered deficient. Treatment First, have your health care provider run blood tests to see if you truly have a B12 deficiency.
A complete blood count (CBC) may show increased reticulocytes, a sign of increased red blood cell production, and decreased hemoglobin and hematocrit. The term "non-hereditary spherocytosis" is occasionally used, albeit rarely. [2] Lists of causes: [3] Warm autoimmune hemolytic anemia; Cold autoimmune hemolytic anemia/paroxysmal cold hemoglobinuria