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Understanding Iron Deficiency Anaemia (IDA) Lab Test & management
with focus on Parenteral Iron therapy
Dr. Sharda Jain
ANAEMIA FREE INDIA
ANAEMIA FREE WOMEN & GIRLS
is our AIM
Objectives
• Basic of Anemia in India
• key aspects of lab evaluation
• Systematic approach to Parenteral
Iron therapy in anemia
India has largest no of
• Anaemic women • Anaemic girls • Anaemic children
Anaemic MOTHERS make Anaemic BABIES
Few factsHard to swallow
8 out of 10
Children, adolescent and women
are anaemic.
BUT
The silver lining is
50% are only mildly anaemic
Anaemia drains all our energy &
makes us “Lazy Race”
Lets Pledge in 2015 to make
• Anaemia Free India• Anamia Free School• Anaemia Free Family• Anaemia Free Children
Hb of GIRLS AND WOMEN should not be less than 12gm%
In India our AIM is
12gm by 12 yrs
where as
in West AIM is for Hb 14-15gm
It is doable
&
we can do it
CHINA Role Model
• Once they brought one child norm, they concentrated on saving this child and making him/her healthy.
• Their incidence of anaemia in children, adolescent has markedly decreased.
• They have increased the height of their
children by 4-6 inc.
If they can do it, why can’t we do it.
• There are 1 million GOOD TEACHERS and 20 million highly placed WORKING WOMEN in India.
Each should work hard to make their class
Student’s and co workers :Anaemia Free”.
• Every parent should take pledge to make their family “Anaemia Free”
There are 8 lacs Doctors & 8 lacs nurses
• Bone MarrowPluripotent stem cells– Life span
•Reticulocyte- 4 days•RBC –120 days
Few facts about lab tests
The Important Players
• Hemoglobin
–Transports 02 from lungs to tissues
– 4 globin chains & iron
The important players • IRON
– key element in the production of hemoglobin
– absorption is poor
• TRANSFERRIN– iron transporter
• FERRITIN– iron binder, measure of iron stores,
Definitions
• Anemia-values of Anemia-values of HEMOGLOBIN, HEMATOCRIT or RBC counts which are more or RBC counts which are more than 2 standard deviations below the meanthan 2 standard deviations below the mean
– HGB<13.5 g/dL (men)HGB<13.5 g/dL (men) <12 (women)<12 (women)
– HCT<41% (men)HCT<41% (men) <36 (women)<36 (women)
Infants 6-12 months & children 1-2 years < 11 gm%
Adolescent girls < 12 gm%
Pregnant women < 11 gm%
Lactating women < 12 gm%
Women in reproductive age group < 12 gm%
Adult men < 13 gm%
Moderate anaemia 7 - 10.0 gm%
Severe anaemia < 7 gm%
WHO GUIDELINES HAEMOGLOBIN CUT OFF LEVELS
FOR DETERMINING ANAEMIA
ALGORITHM FOR EVALUATION OF ANEMIAALGORITHM FOR EVALUATION OF ANEMIA
ANEMIC PATIENT
Hyper-regenerative
Evaluate for hemolysisand bleeding
Hypo-regenerative
Rule out treatable nutritional deficiency (IDA , FA – B12)
endocrinopathy, etc
Low-EPO High-EPO
Trial of EPO Consider BMBxContinue EPO
Retic index
Epo level
Response No response
Laboratory Evaluation
• Initial Testing– CBC w/ differential (includes RBC indices)– Reticulocyte count– Peripheral blood smear
Laboratory Evaluation • Bleeding *Iron Deficiency
– Serial HCT or HGB - Iron Studies
• Hemolysis– Serum LDH, – indirect bilirubin, – haptoglobin,– coombs,– coagulation studies
• Bone Marrow Examination
• Others-directed by clinical indicationhemoglobin
electrophoresisB12/folate levels
Information from CBC Parameters
1. HB/PCV : Degree of anaemia. Correlates with patient’s symptoms.
HB : PCV ----- 1 : 3
2. MCV, MCH, Peripheral Smear: allow Morphological Classification of anemia, guide workup and allow assessment of response to therapy
Peripheral smear: Shape, size, degree of pigmentation of cell types, presence of abnormal cells and blood parasites aid diagnosis of type of anemia
Reticulocyte count : An appropriate response (after correction) shows appropriate erythropoietin release, a marrow capable of producing red cell precursors, and sufficient iron stores.
Normal Polychromasia
PBS
Normal rbc Microcytosis, hypochromia
NormalMacrocytic/megaloblastic
Microangiopathic hemolytic anemia
Spur cell anemia (liver disease)
Hereditary spherocytosis
CBC PARAMETERS IDA THALASSEMIA
RBC count < 5 million/ml >5 million /ml
RDW >14 <14
Mentzer’s Index >14 <14
MCV
MCH
MCHC NORMAL
IDA / THALASSEMIA
IDA VERSUS THALASEMIA
MENTZER’S INDEX
MCV/ RBC < 14 THALASEMMIA
> 14 IDA
SPECIFIC INVESTIGATIONS
• SERUM FERRITIN
• HPLC --- if needed
UK Guidelines on the management of iron deficiency in pregnancy 2012
NOT ROUTINELY RECOMMENDED
• SERUM IRON• TIBC• % TRANSFERRIN SATURATION
Only when serum Ferritin is normal but clinical and morphological picture strongly suggestive of Iron Deficiency Anaemia
SERUM FERRITIN
• Serum ferritin is the best single indicator of storage iron.
Adults (ug/L)– less than 12→ diagnostic of iron deficiency– 15 - 50 → probable iron deficiency– 50 - 100 → possible iron deficiency– more than 100 → iron deficiency unlikely– persistently more than 1000 → consider test for iron
overload
TESTS OF IRON STATUSPractical aspectsPractical aspects
• Low serum ferritin almost always indicates iron deficiency
• Low serum iron and high TIBC almost always indicate iron deficiency
• Ferritin > 100 rarely found in iron deficiency– Exception - liver inflammation/necrosis
• Normal serum iron rarely found in iron deficiency– Exception - iron deficiency recently treated
with oral iron
TESTS OF IRON STATUSPractical aspectsPractical aspects
• When TIBC is low or normal, low serum iron not a reliable indicator of iron deficiency!
• IRON DEFICIENCY may be HARD TO DIAGNOSE via blood tests in setting of INFLAMMATION (eg, low iron, low TIBC, intermediate ferritin level)– Therapeutic trial of iron +/- EPO a reasonable alternative to
marrow biopsy
Treatment PlansTreatment Plans
Remember 5 A’s
• Ask what is your Hb• Ask when was it done last • Ask what is the normal Hb • Ask to get it done right away • Advise : Diet : Tablet : Deworming
DIET --- IRON AND PROTEINS
SOURCES OF IRON
Green leafy vegetables
Legumes, Nuts
Jaggery , Dried Fruits
Meat , Liver ,
Poultry , Fish
SOURCES OF FOLIC ACID
Green leafy vegetables
Legumes, Nuts
Milk , Fruits
Meat , Liver , Eggs
WHO (deworming)
•Drug of choice is Mebendazole 100mg BD for 3 days
OR Albendazole 400mg
•In pregnant women with anaemia after 12 weeks of pregnancy
REASONS FOR FAILURE TO ORAL IRON REASONS FOR FAILURE TO ORAL IRON THERAPYTHERAPY
Reasons for failure to oral iron therapyReasons for failure to oral iron therapy
44
Ferric Carboxymaltose Injection
For the use of a Registered Medical Practitioner or a Hospital or a Laboratory only
Parenteral Iron Therapy &
medical@
emcure.co.in
Parenteral Introduction of Iron
• in severe iron deficiency anemiain severe iron deficiency anemia• intolerance of oral preparations intolerance of oral preparations • Gynae Conditions - before surgery ,Gynae Conditions - before surgery , After Delivery , After Delivery , AUB/ DUB with moderate anamia AUB/ DUB with moderate anamia Pregnancy Anamia Pregnancy Anamia
• diseases of gastro-intestinal tractdiseases of gastro-intestinal tract• continuous blood losscontinuous blood loss• not compensated by oral method not compensated by oral method
Recent Advance in Parenteral Iron -Ferric Carboxymaltose Injection
Injection Iron Sucrose
Properties of an ideal parenteral iron
Property
Type
Molecular weight
Complex stability
Half life
pH
Osmolality
Antigenicity
Test dose
Time for inj.
Max dose
Ideal
I (robust)
>100 kD
High
Long
Neutral
Isotonic
Low
No
Short
High
Iron dextran
I (robust)
>100 kD
High
3-4 days
Neutral
Isotonic
High
Yes
4 - 6 h for 20mg/kg
20mg/kg
Iron sucrose
II (semi-robust)
34-60 kD
Moderate
6 hours
High
High
Low
No
15 min for100mg
600 mg/week
Ferric carboxymaltoseI (robust)
150 kD
High
16 hours
Near-Neutral
Isotonic
Low
No
15 min for 1000mg
1000 mg/infusion /week
Iron usage over years
Dosage• For IV use only• Conventionally calculated using Ganzoni formula: Cumulative iron deficit
[mg] = body weight [kg] x (target Hb - actual Hb) [g/dl] x 2.4 + iron storage depot [mg]
• Use simpler regimen as used in FERGIcor study [Gastroenterology 2011]
Cumulative iron dose of 500 mg should not be exceeded for patients with body weight < 35 kg
Dilution for Infusion • In case of drip infusion Ferric Carboxymaltose Injection must be diluted only in
sterile 0.9% sodium chloride solution as follows:
Iron Maximum volume of normal saline
Minimum time for
administration
200 to < 500 mg 100 ml 6 min
500 to <1000 mg
250 ml 15 min
How critical is speed of infusion?What could be the consequence of excessive dilution (<2mg/ml)?
FERRIC CARBOXYMALTOSE INJECTIONFERIUM INJECTION
Allaying the fear of an injectable iron…..
Adverse effects*System Common
(>1%- <10%)Uncommon
(>0.1% - <1%)Immune system hypersensitivity
Nervous system headache (3.3%); dizziness paraesthesia
Vascular hypotension, flushing
Gastrointestinal nausea, abdominal pain, constipation, diarrhoea
dysgeusia, vomiting, dyspepsia, flatulence
Skin rash pruritus, urticaria
Musculoskeletal myalgia, back pain, arthralgia
General injection site reactions pyrexia, fatigue, chest pain, rigors, malaise, oedema peripheral
Investigational transient blood phosphorus decreased, alanine
aminotransferase increased
aspartate aminotransferase increased, gamma-glutamyltransferase increased, blood lactate dehydrogenase increased
* UK-MHRA approved Prescribing Information
FERRIC CARBOXYMALTOSE INJECTIONFERIUM INJECTION
Allaying the fear of an injectable iron…..
Contraindications
• Known hypersensitivity to Ferric Carboxymaltose Injection or to any of its excipients
• Anaemia not attributed to iron deficiency• Evidence of iron overload or disturbances in
iron utilization of iron• First trimester pregnancy • Children below 14 yrs
Comparative Efficacy of 3 Parenteral Irons
Journal of Blood Transfusion Volume 2012, Article ID 473514 Adobe Acrobat
Docum ent
Perioperative anemia
• There is a high incidence of preoperative and postoperative anemia in surgical patients, with a coincident increase in blood utilization.
• These factors are associated with increased risk for perioperative infection and adverse outcome (mortality) in surgical patients.
Journal of Surgical Research 102, 237–244 (2002)
LIFECARE EXPERIENCE
IRON SUCROSE
• USED IN OVER 500 CASES• ALL PREGNANT WOMEN• 6 PATIENTS HAD REACTIONS• THOUGH NOT MAJOR BUT SCARY ENOUGH
• DEFINITE RISE IN HB IS NOT ASSURED Severe Reaction if Occurs Recovery is Difficult
Company itself is withdrawing
FERRIC CARBOXYMALTOSE
• USED IN 304 CASES• 256 NON PREGNANT AND 48 *PREGNANT• 3 PATIENTS HAD REACTIONS (Rashe 2 , swollen lips 1)
• AGAIN THOUGH NOT MAJOR BUT SCARY ENOUGH
• RISE IN 2 gm HB SEEN IN 1 MONTH IN 90% OF CASES
*Pregnancy not approved by drug controller of India
Our Protocol
• COUNSELING AND CONSENT
• EMERGENCY TRAY
• RESUSCITATION FACILTIES
• ENOUGH EXPERIENCED MANPOWER – DOCTORS, NURSES
Conclusion
• Major benefits of FCM inj over iron sucrose Inj.
• Safe
• Rapid infusion rate – 1000 mg in 15 minutes
• Low antigenicity
• No test dose required
Thank You
Thank You