approach to anemia
TRANSCRIPT
National family health survey (NFHS-III) in 2005-06 found that the prevalence of anemia under 5 children approach about 70%.it is highest in children between 6-35 months of age.
PRESENTED BY
DR. VIJAY KR. SINGH(DNB PED)
UNDRE GUIDENCE OF
DR. T. K. MONDAL MD(PED)
M R BANGUR HOSPITAL
TOLLYGUNJ
KOLKATA
Decreased erythropoesis either due to deficiency of nutrition or defect in erythipoesis
Increased blood loss.
Diminished red cell survival as a result of immune disorder and chronic diseases.
Inadequate iron supply at birth like- prenatal or maternal nutrition deficiency, prematurity, low birth weight, multiple birth.
Inadequate absorption of iron-Gluten induced entrepathy, atrophic gastritis, post –gasterectomy, presence of phytats in diet and calcium, presence of recurrent diarrhea.
A. disorder of red cell production in which the rate of red cell production is less than expected.
1. marrow faillure
- Aplatic anemia( congenital and aquired)
2. Pure red cell aplasia
congenital
Diamond- Blackfan Syndrome
Aese Symdrome
Transient erthroblastopenia of childhood
C. Bone marrow replacement
malignancy
Ostipetrosis
Myelofibrosis
Chronic renal disesas
Vitamin D
Chronic renal disease
Hypothyriodism
Chronic infection
Protein energy malnutrition
Hemoglobin mutant with decreased affinity of O2
Abnormalities in cytoplasmic maturation
Iron deficiency
Thalassemia syndrome
Lead poisoning
Abnormalities in nuclear maturation
Vitamin B12
folic acid
Thiamin respond megaloblastic anemia
hereditary abnormalities in folatemetabolism
Orotic aciduria
Iron deficiency anemia is the most wide spread micronutrient deficiency and affect nearly 1.5 billion people globally.
Infant,pre school children, adolescent, and growing children are at greater risks.
According to NFHS-III in 2005-06, the prevalence of anemia under -5 yrs of children is about 70%.
Normal infant have 75mg of iron of per kg body weight.
Two third present in RBC.
The majority of body iron is in the form of Hb with about 10% in iron containing protien like myoglobinant cytochrome.
Pulses
green leafy vegetable
Dal
Bajra, dates, Nuts,
Jaggery
Meat and fish
Administration of Vitamin- C increased the absorption of iron
A. Decreased iron store Preterm
Small for date babyTwins
B. Decreased intake assimilation
Delayed intake of complementary feedingMalnutritionPoor iron diet
Mal absorptionChronic diarrhoea/ infectionGastero- intestinal surgery
C. Increased lossGastro intestinal bleedingMalaria
Hook worm infestation, trichuristrichuria.
H. pylori.Peptic ulcer.Diveticulutis, bleeding diathesis,
feto- femoral haemorrahagem, repeated venous sampling.
Prematurity
LBW Baby
Recovery from mal nutrition
Adolescence
Mostly are asymptomatic. Pallor is most important clinical sign but
usually not visible until Hb fall to 7-8gm/ dl.
Initial manifestation irritability, anorexia, pallor, hyper dynamic circulation leads to palpitation.
Shortness of breath, easy fatigability, exercise intorelerance, heart failure.
Sign- koilonychias, glossittis, angular chellitis, these are more common in long standing Anemia.
Hb 6 month-5yrs < 11gm/dl
6- 11yrs <11.5gm/dl
non pregnant <12gm/dl
pregnant < 11gm/DL
MCV <82
Transferring saturation <16%
Serum ferritin < 5yrs<12
>5yrs 15
in infection < 30
erythrocytes Zinc protoporphyrin < 5yrs >70
> 5yrs >80
Serum ferritin
decreased
Serum iron
decreased
Iron binding
capacity increased
RDW – Increased>19
RBC- Decreased
Peripheral smear shows-Hypochoromic microcytic red cell with sustacial variation in cell size, elliptocytic or cigar shaped red cell are seen.
Study Iron deficiency anemia
thalassemia Anemia of chronic diseases
Hemoglobin Decreased Decreased decreased
MCV Decreased Decreased Decreased-Normal
RDW Increased Decreased Normal-Decreased
RBC Decreased Normal-Increased
Normal-Decreased
Serum ferritin Decreased Normal Increased
Total iron binding capacity
Increased Normal Dcreased
ReticulocyteHemoglobin
Decreased Normal Normal -Decreased
Daily doses of 3-6 mg of elemental iron per kg of body weight in two or three divided doses
Parental iron prepation is usually used only in malabsorption,poor compliance.
Parental iron sucrose and gluconoate complex have a lower risk of serious reaction than dextran.
Doses of parental iron-2.3x body weight( 15-patient Hb in gm/dl) +500 to 1000 mg, given in divided doses.
Excessive intake of milk should be avoided
Repeat blood count after 4weeks Hb begins to increased 0.1 to 0.4 gm/ dl per day.
Iron medication should be continue for 8weeks after blood value normalized to re-establishment a response to therapy.
Time after iron administration
Response
12-24 hrs Replacement of intracellular iron enzyme , subjective improvement, decreased irritability, increased appetite
36- 48 hrs Initial bone marrow response, erythroid hyperplasia
48-72hrs Reticulocytisis, peaking at 5-7 days
4- 30 days Increased in Hb level
1- 3 months Repletion of store
Poor compliance.
Incorrect dose or administration.
Malabsorption of absorbed iron.
On going blood loss.
Concurrent vitamin B 12 deficiency or fIoatedeficiency.
Diagnosis other than iron deficiency like
Thalassemias
Hb C and E disorder
Anemia of chronic diseases
lead poisoning, sickle cell anemia
Sideroblastic anemia result from disorder of heme synthesis. Characterized by microcytic, mixed with normal RBC a picture of dimorphic anemia with high RDW, serum iron elevated and trasferrinsaturation increased. Elevated iron deposited in mitochondria.
Megaloblastic anemia is characterized by macrocytic red cells and erthroid precursor which show nuclear dymaturity.
The common causes are Vitamin B12 and Folic acid.
Incidence
incidence of folate deficiency as 6.8% and vitamin B12 32% and combined 20%.
Megaloblastic anemia affect all hem poetic cell line resulting anemia, thrombocytopenia, and leucopenia.
DNA synthesis impaired because of lack of methytetrahydrofolate, vit B12 plays an important role as co factor which is necessary for DNA synthesis.
Folate deficiency caused by
Decreased ingestion
celiac disease
Malabsorption state
Drugs like
Methotrexate
6- mercaptopurine
Trimithprine, azathiprine, phynatoin and other anticonvulsent and increased requirement infancy, hyperthyroidism, chronic hemolytic disease.
Vitamin B 12 deficiency causesd by
Decreased ingestion
intestinal parasite
Intritrisic intestinal diseas
intrinsic factor deficiency
Oritic aciduria
HIV infection
H. pylori infection
Pallor
Anorexia
Irritability
Thrombocytopenia, neurtopenia,
Glossitis, stomatitis, hyper pigmentation over skin on knuckles
Enlarged liver and spleen in 30- 40% cases.
loss of position sense, vibration sensation, memory loss, confusion, and neuron psychiatric symptoms.
MCV>110
Hyper segmented neutrophil.
Bone marrow shows one or more cell line affected
Bone marrow is cellular and nuclear –cytoplasmic asynchrony.
Elevated lactate and billirubin.
Folate- 1-5 mg/day for 3-4 weeks
Vitamin B 12 500-1000micro gram for 2-3 weeks then 100-250 micro gram once in a month to prevent recurrence.
Treatment with folic acid alone can produce hematological response in vitamin B 12 deficiency but does not currect neurological impairment caused by Vitamin B12
Difinition- A term infant have higher hemoglobin and hematocrit and larger RBC than older child and adult, within the 1st week of life a progressive decline of Hb level begins then persist for 6-8wks of life called physiological anemia of infancy.
Causes – there is gradual , normal development switch from Hb F to adult Hb after birth which is capable of delivering of more oxygen to the tissue.The increased in blood oxygen content and delivery result in the down regulation of erythropoietin production leading to suppression of eryththropoesis.
Tratment- No therapy required
Hb may decreased to 8gm /dl at 4-8 weeks of life in premature neonate with birth weight less than 1.5 kg.
Factors which contributes development of anemia
Reduced hematopoietic activity as evident by decreased reticulocytes countsReduced red cell survival.
Treatment – recombinant human erythropoietin with or without transfusion.with adequate protein vitamin E, iron to
achieve full benefit of medication.
DEFINITION
A plastic anemia is defined by as presence of any two peripheral blood criteria ANC(Absolute neutrophil count) < 1500/mm platelet count < 40,000/cumm.
CongenitalFanconi anemiaDyskeratotic congenitaReticular dysgenesisShwachman- Diamond syndrome
AcquiredIdiopathicRadiationViruses- hepatitis, epstein – Bar virus, Parvo virus
pregnancy,Hypogamaglubenumia, thymoma, Enophilic fascitis,pre- leukemic state
Chemical- benzene,sniffing insectiside
Infection
hepatitis, parvo virus,Epsttien bar virus
Drugs
sulfa, anticancer drugs chlotramphenical,gold,carbamazepin .indomethacin .
Radiation.
Thrombocytopenia, with bleeeding in skin, mucasal, GI tract, hematuria, menorrhagia.
Neutropenia leads to fever, infection.
Anemia appears last with breathlessness, puffiness of face, edema of feet, congestive cardiac failure
Peripheral smear- normocyticnormochromic RBC,leukopenia, decreased ANC, Thrombocytopenia.
Coagulation parametre will be normal.
Bone marrow biopsy
hypocellular marrow with empty spicule, increased fat space, hypoplasia.
Curative-stem cell transplant
Criteria for stem cell transplant
1. Patient who are young
2. Severe a plastic anemia
3. Matched related sibling donor
Other treatment
Antithymocyte globin(ATG)
G-CSF
CyclosporineA
condition Inheritancce
Associated features Risk of malignancy
Falconianemia
AR Absent thumb,absent radius, microcephaly,renalanomalies,short stature,skinpigmentation
AML, Myelodysplasia,oral and liver cancer
Dyskeratosiscongenita
X–linked,AD, AR
Nail dustrophy, leukoplakia, Squamous cell calcinoma, myelodysplasia
Diamond Blackman
AD, AR Short stuture,congenitalanomalies , elevated Hb F, Raised adenosine deaminase,
Leukemia, myelodypkasia
Diamond blackman syndrome is isolated erythroid hypoplasia occurs in early child hood and associated with congenital anomalies like stabismus, webbed neck, deformed thumb, bony abnormalities of finger and thumb, double ureter, hydronephrosis.
Bone marrow shows profound erythroid hypoplasia, macrocytosis. Inceased Hb F
Treatment-transfusion therapy, and steroid
A rare disorder characterized by diminised megakaryocytic tithstem cell defect without associated physical defect or abnormal defect.
A variety of cells are abnormally sensitive by complement, due to defect in glycosylphosphatidylinositol anchor, which bind protein to the cell membrane.
Chronic hemolytic is more common than sleep- induced hemoglobinuria.
Diagnosis – molecular testing of CD-56
It is characterized by presence of vacuoles in bone marrow precursor cells along with sideroblastic anemia with pancreatic exocrine abnormalities.