Hemoglobin 42 refers to a hemoglobin level of 42 g/L, which is classified as severe anemia. There are many causes of severe anemia, including severe iron deficiency anemia, megaloblastic anemia, hemolytic anemia, etc., which can be dangerous to the human body if not controlled for a long time.
1. Iron deficiency anemia: it can cause dizziness, headache, fatigue, palpitations, and iron deficiency anemia can also lead to slow growth of infants.
2. Megaloblastic anemia: most of the disease starts slowly, which can lead to fatigue, palpitation, shortness of breath, blurred vision, tinnitus, abdominal distension, constipation, etc., and some of the patients can have mild jaundice.
3. Hemolytic anemia: acute hemolysis has a rapid onset, sudden chills, high fever, shortness of breath, irritability, and in severe cases, peripheral circulatory failure can occur, and hemolytic products can also damage the renal tubules, resulting in oliguria, anuria and acute renal failure. Chronic hemolysis is characterized by hepatosplenomegaly, which can be life-threatening in severe cases.
In addition to the above, other diseases such as leukemia and aplastic anemia can also lead to severe anemia, which can endanger the patient’s life. Therefore, if the above test results occur, it is recommended to consult a doctor in time to find out the cause of the disease and carry out regular treatment under the doctor’s guidance, so as to avoid delaying the condition.