Definition: It may be defined as decrease in the quantity of Haemoglobin or number of erythrocyte or both per unit of volume of blood.(Normal range)

Classification

According to morphological features:

  • Macrocytic normochromic anaemia
  • Macrocytic hypochromic anaemia
  • Normocytic normochromic anaemia
  • Normocytic hypochromic anaemia
  • Microcytic normochromic anaemia
  • Microcytic hypochromic anaemia

According to Aetiology:

  • Haemorrhagic anaemia
  • Haemolytic anaemia
  • Immunological haemolytic anaemia
  • Dyshaemopoetic anaemia

Macrocytic normochromic anaemia

Presence of immature RBC in blood. The size of RBC is bigger than normal with usual color. Here the Hb synthesis is normal but cell maturation(DNA,RNA synthesis) is hampered. Due to deficiency of

i.Vitamin-B12

ii.Cobalt

iii.Folic acid

iv.Intrinsic factor

v.Erythrocyte maturation factor

Macrocytic hypochromic anaemia

Normocytic normochromic anaemia

Normocytic hypochromic anaemia

Dietary deficinecy of Iron,

Dietary deficinecy of Copper

Dietary deficinecy of Manganese

Dietary deficinecy of Cobalt

Dietary deficinecy of Ascorbic acid

Dietary deficinecy of Pyridoxin

Dietary deficinecy of Nicotinic acid

Dietary deficinecy of riboflavin

Dietary deficinecy of thyroxin may cause this.

Microcytic normochromic anaemia

Microcytic hypochromic anaemia

It is the iron deficiency anaemia.Dietary deficinecy of Fe,Cu,Mn,Co,Ascorbic acid,Pyridoxin,Nicotinic acid,riboflavin,thyroxin may cause this.

Iron Defficiency Anaemia: If Serum Iron level is <50 microgram %

Haemorrhagic anaemia

Haemolytic anaemia

Immunological haemolytic anaemia

Dyshaemopoetic anaemia

Renal disorder k/a Renal anaemia.

Kidney is reaponsible for Erythropoetin production(R.B.C stimulating factor).

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