Iron deficiency anemia is one of the nutritional deficiency anemia, and the most common microcytic hypochromic anemia. it is also one of the common anemia in Pakistan. Pregnant and lactating are most commonly affected.
3.
Anemia is a medical
condition in which the
hemoglobin concentration is
less than normal
(for the age and sex of the individual)
4.
Mild anemia
With hemoglobin level 9-12 g/dl
Moderate anemia
With hemoglobin level 6-9g/dl
Severe anemia
With hemoglobin level <6g/dl
Severity
5. Iron deficiency anemia is the most common form of anemia
caused from too little iron in the body
About 20% of women,
90% of pregnant women,
and 3% of men
do not have enough iron in their body.
7.
Most body iron is present in haemoglobin in circulating red
cells
The macrophages of the reticuloendotelial system store iron
released from haemoglobin as ferritin and hemosiderin
Small loss of iron each day in urine, faeces, skin and nails
and in menstruating females as blood (1-2 mg daily)
Body Iron Distribution
9.
an adult male
ingest about 15 mg of iron of which only 10% will be
absorbed, giving him 1.5
mg/day of iron that can be used for red cell production or
stored in the reticuloendothelial system (RES)
Iron Metabolism
11. iron ingestion
duodenum
10% if ingested iron is absorbed
conversion of iron from the Fe3
(ferric) to the Fe2(ferrous)
transportation of iron from GI tract to bone
marrow via transferrin(mono ferricdi ferric)
12. 1 gram of transferrin binds 1.4 mg of iron
(total iron binding capacity)
iron
in bone marrow for the developing
normoblast for use of hemoglobin synthesis
erythrocytes
macrophages
reticuloendothelial system
16.
Iron is stored mainly in the liver in reticuloendothelial
system as
Hemosiderin
Ferritin
Hemosiderin is the major long term storage form of iron ;
release slowly,
Ferritin is the primary storage form of soluble iron ;release
readily at time of need.
Iron Storage
17.
Ferritin
Iron storage protein
In humans, it acts as a buffer against iron deficiency and
iron overload
Consists of:
Apoferritin – protein component
Core- ferric, hydroxyl ions and oxygen
Largest amount of ferritin-bound iron is found in:
Liver hepatocytes (majority of the stores)
BM
Spleen
Excess dietary iron induces increased ferritin production
Partially digested ferritin= HAEMOSIDERIN- insoluble
and can be detected in tissues (hepatocytes) using Perl’s
Prussian blue stain
18.
Water insoluble protien iron complex
Visible by light microscope
It has higher iron to protein ration up to 37% than
ferritin up to 20%
Formed by partial digestion of ferritin aggregates by
lysosomal enzymes.
Hemosidrin is present predominately in
macrophages rather than hepatocytes.
Hemosidrin
19.
Transferrin (Tf)
Transports iron from palsma to erythroblast
Mainly synthesized in the liver
Fe3+ (ferric) couples to Tf
Apotransferrin = Tf without iron
Contains sites for max 2 iron molecules
Synthesis is inversely proportional to iron store
20.
Iron deficiency anaemia develops in three stages
iron depletion
Iron deficient erythropoiesis
iron deficiency anaemia
Pathophysiology of IDA
21.
Iron stores are exhausted as indicated by decreased serum
ferritin, serum iron normal
No anaemia
Erythrocyte morphology is normal
Iron Depletion
22.
There is insufficient iron to insert into the protoporphyrin
ring to form heme,
Serum iron is also depleted.
Anaemia and hypochromia are still not detectable
Erythrocytes may became slightly microcytic
Iron Deficient Erythropoiesis
23.
Long standing negative flow leads to IDA
Blood loss significantly shorten this stage
Classic microcytosis and hypochromia
The situation represents advanced stage of severely
deficient body iron
Iron Deficiency Anemia
24.
Blood Loss
Gastrointestinal Tract
Menstrual Blood Loss
Urinary Blood Loss (Rare)
Blood in Sputum (Rarer)
Increased Iron Utilization
Pregnancy
Infancy
Adolescence
Polycythemia Vera
Causes of Iron Deficiency
Anemia
28.
Rbc count normal-decrease
Hemoglobin decreased
Wbc conut normal
Palatelets normal-increase(in chronic bleeding)
RDW increased
(is the first sign to appear even before microcytosis of the
cell occurs in the iron depletion stage of anemia )
Complete Blood Count
29.
Red cell Indices
PCV decreased
MCV decreased
MCH decreased
MCHC decreased
35.
Serum iron low
Serum ferritin low
TIBC(total iron binding capacity) inreased
Tansferrin saturation % low
Iron Profile
36.
Bone marrow is hyper cellular with polychromatic
normoblast predominance
Erythroid series is small and have tiny projection from the
cytoplasm
Iron stain; Negative
Bone Marrow
43.
Iron is released from the hemosidrine molecules by treating
the slide with weak acid solution .the free iron combines
with potassium ferrocynide to produce ferric Ferro cyanide.
Free iron will appear greenish blue
Prussian-blue Stain
44. Procedure
Air dry film
Fix with methanol 10-20min
Place slide in solution of 10g /l potassium Ferro cyanide
in 0.1 mol/l HCL for 30 min
Wash in running tap water for 1 min
Rinse in distilled water
Counter stain with neutral red for10-15 sec