Final answer:
Blood transfusions are most beneficial when hemoglobin levels are between 5 to 9 g/100 ml, particularly in cases of iron deficiency anemia in infants, children, and nursing mothers. Matching ABO blood type is crucial to avoid complications. Iron is a critical component of hemoglobin, which is required for effective oxygen transportation in the body.
Step-by-step explanation:
In which range of haemoglobin does a blood transfusion have the most benefit? This is a common question in the medical field, particularly when dealing with conditions like iron deficiency anemia. A blood transfusion is typically most beneficial when the hemoglobin levels are critically low.
For weaned infants and young children as well as adolescents and nursing mothers suffering from iron deficiency anemia, hemoglobin levels can fall between 5 to 9 g/100 ml of blood. In such cases, the patients are often experiencing symptoms like listlessness, poor appetite, pallor of the skin, and stunted growth and development. These are indicators that a transfusion could be necessary to improve the patient's condition.
Moreover, the importance of matching the ABO blood type during transfusions is paramount to avoid life-threatening hemolytic transfusion reactions (HTR). The body utilizes iron to produce hemoglobin, and when there's an iron deficiency, or in the event of significant blood loss, hemoglobin levels drop, necessitating a transfusion.