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Dr. Sachin Verma MD, FICM, FCCS, ICFC
      Fellowship in Intensive Care Medicine
        Infection Control Fellows Course
  Consultant Internal Medicine and Critical Care
Web:- http://www.medicinedoctorinchandigarh.com
             Mob:- +91-7508677495
• Bone marrow
  – Pluripotent stem cells
  – Chemical regulation
    • Cytokines
    • Erythroid specific growth factor
    • Erythropoietin (EPO)
  – Life span
    • Reticulocyte- 4 days
    • RBC –120 days
Anemia-values of hemoglobin, hematocrit or RBC
counts which are below the values expected for
age and sex matched normal subjects.
   HGB<13 g/dL (men)        <12 (women)
   HCT<41% (men)            <36 (women)
HISTORY
  - family history
 - ethnicity geographical distribution
  -Is the patient bleeding?
      Actively? In past?
  -Is there evidence for increased RBC
  destruction?-jaundice, gall stone etc
  -Is the bone marrow suppressed?
  -Is the patient nutritionally deficient? Pica?
  -medication review, toxin exposure
  -history of chronic diseases,fever ,weight
  loss etc.
REVIW OF SYMPTOMS
Decreased oxygen delivery to tissues
  -Exertional dyspnea
  -Dyspnea at rest
  -Fatigue
  Signs and symptoms of hyperdynamic state
     -Bounding pulses
     -Palpitations
  Life threatening: heart failure, angina,
  myocardial infarction
Hypovolemia
  -Fatiguablitiy, postural dizziness,
  lethargy,hypotension, shock and death
PHYSICAL EXAM
    •Stable or Unstable?
          -ABCs
          -Vitals
    •Pallor
    •Jaundice
          -hemolysis
    •Lymphadenopathy
    •Hepatosplenomegally
    •Bony Pain
    •Petechiae
    •Rectal-? Occult blood
Functional Classification :
   Hypoproliferative
   Ineffective erythropoesis
   Increased Destruction/hemolytic or blood loss
Classification by Morphology:
   Normocytic
   Microcytic
   Macrocytic
     I.Complete blood count (CBC)
         A. Red blood cell count
      1. Hemoglobin
     2. Hematocrit
     3. Reticulocyte count
         B. Red blood cell indices
      1. Mean cell volume (MCV)
     2. Mean cell hemoglobin (MCH)
     3. Mean cell hemoglobin concentration (MCHC)
     4. Red cell distribution width (RDW)
         C. White blood cell count
      1. Cell differential
     2. Nuclear segmentation of neutrophils
         D. Platelet count
     E. Cell morphology
      1. Cell size
     2. Hemoglobin content
     3. Anisocytosis
     4. Poikilocytosis
     5. Polychromasia
       II. Iron supply studies
       A. Serum iron
   B. Total iron-binding capacity
   C. Serum ferritin
       III. Marrow examination
       A. Aspirate
       1. M/E ratioa
   2. Cell morphology
   3. Iron stain
       B. Biopsy
       1. Cellularity
   2. Morphology
An accurate reticulocyte count is key to the initial classification
of anemia. Normally, reticulocytes are red cells that have been
recently released from the bone marrow. They are identified
by staining with a supravital dye that precipitates the
ribosomal RNA (Fig. 58-12). These precipitates appear as blue
or black punctate spots. This residual RNA is metabolized over
the first 24–36 h of the reticulocyte's lifespan in circulation.
Normally, the reticulocyte count ranges from 1–2% and reflects
the daily replacement of 0.8–1.0% of the circulating red cell
population. A reticulocyte count provides a reliable measure
of red cell production.
In order to use the reticulocyte count to estimate marrow
response, two corrections are necessary
The first correction adjusts the reticulocyte count based on the reduced number
of circulating red cells. With anemia, the percentage of reticulocytes may be
increased while the absolute number is unchanged.

 For this second correction, the peripheral blood smear is
 examined to see if there are polychromatophilic macrocytes
 present. These cells, representing prematurely released
 reticulocytes, are referred to as "shift" cells. The correction is
 necessary because these prematurely released cells survive as
 reticulocytes in circulation for >1 day, thereby providing a
 falsely high estimate of daily red cell production. If
 polychromasia is increased, the reticulocyte count, already
 corrected for anemia, should be divided again by a factor of 2
 to account for the prolonged reticulocyte maturation time
Correction #1 for anemia:

 This correction produces the corrected reticulocyte count

 In a person whose reticulocyte count is 9%, hemoglobin 7.5 g/dL, hematocrit 23%, the
absolute reticulocyte count = 9 x (7.5/15) [or x (23/45)]= 4.5%

Correction #2 for longer life of prematurely released reticulocytes in the blood:

 This correction produces the reticulocyte production index will

 In a person whose reticulocyte count is 9%, hemoglobin 7.5 gm/dL, hematocrit 23%, the
reticulocyte production index will be 4.5/2(maturation time correction)
MCV


Microcytic Normocytic Macrocytic
(MCV<80) (80<MCV<100)(MCV>100)
   -The presence of anemia with an inappropriately low
    reticulocyte production index, macro- or microcytosis
    on smear, and abnormal red cell
   -divided into two categories: nuclear maturation
    defects, associated with macrocytosis and abnormal
    marrow development, and cytoplasmic maturation
    defects, associated with microcytosis and hypochromia
    usually from defects in hemoglobin synthesis.
   -The inappropriately low reticulocyte production index
    is a reflection of the ineffective erythropoiesis that
    results from the destruction within the marrow of
    developing erythroblasts.
   -Bone marrow examination shows erythroid
    hyperplasiaoglobin synthesis
Anemia of Chronic Disease

Iron Deficiency

Lead PoisoningThalassemia

Sideroblastic
Gold Standard?
  Bone marrow aspirate
Lab studies?
  Ferretin
  Serum iron
  Total Iron Binding Capacity
  Fe Saturation
Ferritin Serum    TIBC     RDW
                       Fe
  Fe defic   decreas decreas increase   (>15)
  AOCD       N/incre decreas decreas     N
Sideroblasti N/incre    N/incre   N      N
     c
Thalassemia N/incre     N/incre   N     N/
Normal serum iron:50-150ug/dl
         Normal serum ferritin:100ug/L
(male)and 30ug/L (female)
 Normal TIBC :300-360ug/dl
Normal percentage saturation(serum
iron/TIBCx100):25-50%
MCV(hamatocritx10)/ (red cell countx10 ):82-98
 MCH(hemoglobinx10/(red cell countx10 ):27-33
MCHC (MCH/MCV) :31-34
   General examination : Jaundice, pallor
    Other physical findings : Spleen may be enlarged;
    bossing of skull in severe congenital cases
    Hemoglobin  :From normal to severely reduced
    MCV, MCH : Usually increased
   Reticulocytes : Increased
   Bilirubin : Increased (mostly unconjugated)
   LDH : Increased (up to 10X normal with
    intravascular hemolysis) 
    Haptoglobin : Reduced to absent
Intracorpuscular Defects
Hereditary:
   Hemoglobinopathies
  Enzymopathies
    Membrane-cytoskeletal defects  
 Acquired :
Paroxysmal nocturnal hemoglobinuria (PNH)
   Extracorpuscular Factors
   Familial hemolytic uremic syndrome (HUS)  
   Mechanical destruction (microangiopathic)    
   Toxic agents
     Drugs  
      Infectious    
    Autoimmune
   Mismatched blood transfusion
   PNH
   Septicemia
   Microangiopathic
   March hemoglobinuria
   In all these cases hemoglobinuria is the unique
    feature
   -comprises 75% of all anemias
   -reflects absolute or relative marrow failure in which
    the erythroid marrow has not proliferated
    appropriately for the degree of anemia.
   -can result from marrow damage, iron deficiency, or
    inadequate EPO stimulation.
   -loewEPO production may reflect impaired renal
    function, suppression of EPO production by
    inflammatory cytokines such as interleukin 1, or
    reduced tissue needs for O2 from metabolic disease
    such as hypothyroidism
   Pancytopenia with Hypocellular Bone
    Marrow 
    Acquired aplastic anemia
   Constitutional aplastic anemia (Fanconi's
    anemia, dyskeratosis congenita)
   Some myelodysplasia
   Rare aleukemic leukemia (AML)
   Some acute lymphoid leukemia
   Some lymphomas of bone marrow
   Pancytopenia with Cellular Bone Marrow 
   Primary bone marrow diseases
     Myelodysplasia
     Paroxysmal nocturnal hemoglobinuria
     Myelofibrosis
     Some aleukemic leukemia
     Myelophthisis
     Bone marrow lymphoma
     Hairy cell leukemia
   Secondary to systemic diseases
     Systemic lupus erythematosus
     Hypersplenism
     B12, folate deficiency
     Overwhelming infection
     Alcohol
     Brucellosis
     Sarcoidosis
     Tuberculosis
     Leishmaniasis
Approach to a patient of anemia1   copy

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Approach to a patient of anemia1 copy

  • 1. Dr. Sachin Verma MD, FICM, FCCS, ICFC Fellowship in Intensive Care Medicine Infection Control Fellows Course Consultant Internal Medicine and Critical Care Web:- http://www.medicinedoctorinchandigarh.com Mob:- +91-7508677495
  • 2. • Bone marrow – Pluripotent stem cells – Chemical regulation • Cytokines • Erythroid specific growth factor • Erythropoietin (EPO) – Life span • Reticulocyte- 4 days • RBC –120 days
  • 3. Anemia-values of hemoglobin, hematocrit or RBC counts which are below the values expected for age and sex matched normal subjects. HGB<13 g/dL (men) <12 (women) HCT<41% (men) <36 (women)
  • 4. HISTORY - family history - ethnicity geographical distribution -Is the patient bleeding? Actively? In past? -Is there evidence for increased RBC destruction?-jaundice, gall stone etc -Is the bone marrow suppressed? -Is the patient nutritionally deficient? Pica? -medication review, toxin exposure -history of chronic diseases,fever ,weight loss etc.
  • 5. REVIW OF SYMPTOMS Decreased oxygen delivery to tissues -Exertional dyspnea -Dyspnea at rest -Fatigue Signs and symptoms of hyperdynamic state -Bounding pulses -Palpitations Life threatening: heart failure, angina, myocardial infarction Hypovolemia -Fatiguablitiy, postural dizziness, lethargy,hypotension, shock and death
  • 6. PHYSICAL EXAM •Stable or Unstable? -ABCs -Vitals •Pallor •Jaundice -hemolysis •Lymphadenopathy •Hepatosplenomegally •Bony Pain •Petechiae •Rectal-? Occult blood
  • 7. Functional Classification : Hypoproliferative Ineffective erythropoesis Increased Destruction/hemolytic or blood loss Classification by Morphology: Normocytic Microcytic Macrocytic
  • 8. I.Complete blood count (CBC)      A. Red blood cell count   1. Hemoglobin  2. Hematocrit  3. Reticulocyte count      B. Red blood cell indices  1. Mean cell volume (MCV)  2. Mean cell hemoglobin (MCH)  3. Mean cell hemoglobin concentration (MCHC)  4. Red cell distribution width (RDW)      C. White blood cell count  1. Cell differential  2. Nuclear segmentation of neutrophils      D. Platelet count  E. Cell morphology   1. Cell size  2. Hemoglobin content  3. Anisocytosis  4. Poikilocytosis  5. Polychromasia
  • 9.     II. Iron supply studies      A. Serum iron  B. Total iron-binding capacity  C. Serum ferritin      III. Marrow examination      A. Aspirate      1. M/E ratioa  2. Cell morphology  3. Iron stain      B. Biopsy      1. Cellularity  2. Morphology
  • 10. An accurate reticulocyte count is key to the initial classification of anemia. Normally, reticulocytes are red cells that have been recently released from the bone marrow. They are identified by staining with a supravital dye that precipitates the ribosomal RNA (Fig. 58-12). These precipitates appear as blue or black punctate spots. This residual RNA is metabolized over the first 24–36 h of the reticulocyte's lifespan in circulation. Normally, the reticulocyte count ranges from 1–2% and reflects the daily replacement of 0.8–1.0% of the circulating red cell population. A reticulocyte count provides a reliable measure of red cell production. In order to use the reticulocyte count to estimate marrow response, two corrections are necessary
  • 11. The first correction adjusts the reticulocyte count based on the reduced number of circulating red cells. With anemia, the percentage of reticulocytes may be increased while the absolute number is unchanged. For this second correction, the peripheral blood smear is examined to see if there are polychromatophilic macrocytes present. These cells, representing prematurely released reticulocytes, are referred to as "shift" cells. The correction is necessary because these prematurely released cells survive as reticulocytes in circulation for >1 day, thereby providing a falsely high estimate of daily red cell production. If polychromasia is increased, the reticulocyte count, already corrected for anemia, should be divided again by a factor of 2 to account for the prolonged reticulocyte maturation time
  • 12. Correction #1 for anemia: This correction produces the corrected reticulocyte count In a person whose reticulocyte count is 9%, hemoglobin 7.5 g/dL, hematocrit 23%, the absolute reticulocyte count = 9 x (7.5/15) [or x (23/45)]= 4.5% Correction #2 for longer life of prematurely released reticulocytes in the blood: This correction produces the reticulocyte production index will In a person whose reticulocyte count is 9%, hemoglobin 7.5 gm/dL, hematocrit 23%, the reticulocyte production index will be 4.5/2(maturation time correction)
  • 13.
  • 15. -The presence of anemia with an inappropriately low reticulocyte production index, macro- or microcytosis on smear, and abnormal red cell  -divided into two categories: nuclear maturation defects, associated with macrocytosis and abnormal marrow development, and cytoplasmic maturation defects, associated with microcytosis and hypochromia usually from defects in hemoglobin synthesis.  -The inappropriately low reticulocyte production index is a reflection of the ineffective erythropoiesis that results from the destruction within the marrow of developing erythroblasts.  -Bone marrow examination shows erythroid hyperplasiaoglobin synthesis
  • 16. Anemia of Chronic Disease Iron Deficiency Lead PoisoningThalassemia Sideroblastic
  • 17. Gold Standard? Bone marrow aspirate Lab studies? Ferretin Serum iron Total Iron Binding Capacity Fe Saturation
  • 18. Ferritin Serum TIBC RDW Fe Fe defic decreas decreas increase (>15) AOCD N/incre decreas decreas N Sideroblasti N/incre N/incre N N c Thalassemia N/incre N/incre N N/
  • 19. Normal serum iron:50-150ug/dl Normal serum ferritin:100ug/L (male)and 30ug/L (female) Normal TIBC :300-360ug/dl Normal percentage saturation(serum iron/TIBCx100):25-50% MCV(hamatocritx10)/ (red cell countx10 ):82-98 MCH(hemoglobinx10/(red cell countx10 ):27-33 MCHC (MCH/MCV) :31-34
  • 20. General examination : Jaundice, pallor  Other physical findings : Spleen may be enlarged; bossing of skull in severe congenital cases  Hemoglobin  :From normal to severely reduced MCV, MCH : Usually increased  Reticulocytes : Increased  Bilirubin : Increased (mostly unconjugated)  LDH : Increased (up to 10X normal with intravascular hemolysis)   Haptoglobin : Reduced to absent
  • 21. Intracorpuscular Defects Hereditary: Hemoglobinopathies   Enzymopathies     Membrane-cytoskeletal defects   Acquired : Paroxysmal nocturnal hemoglobinuria (PNH)
  • 22. Extracorpuscular Factors  Familial hemolytic uremic syndrome (HUS)    Mechanical destruction (microangiopathic)      Toxic agents    Drugs      Infectious      Autoimmune
  • 23. Mismatched blood transfusion  PNH  Septicemia  Microangiopathic  March hemoglobinuria  In all these cases hemoglobinuria is the unique feature
  • 24. -comprises 75% of all anemias  -reflects absolute or relative marrow failure in which the erythroid marrow has not proliferated appropriately for the degree of anemia.  -can result from marrow damage, iron deficiency, or inadequate EPO stimulation.  -loewEPO production may reflect impaired renal function, suppression of EPO production by inflammatory cytokines such as interleukin 1, or reduced tissue needs for O2 from metabolic disease such as hypothyroidism
  • 25. Pancytopenia with Hypocellular Bone Marrow   Acquired aplastic anemia  Constitutional aplastic anemia (Fanconi's anemia, dyskeratosis congenita)  Some myelodysplasia  Rare aleukemic leukemia (AML)  Some acute lymphoid leukemia  Some lymphomas of bone marrow
  • 26. Pancytopenia with Cellular Bone Marrow   Primary bone marrow diseases    Myelodysplasia    Paroxysmal nocturnal hemoglobinuria    Myelofibrosis    Some aleukemic leukemia    Myelophthisis    Bone marrow lymphoma    Hairy cell leukemia  Secondary to systemic diseases    Systemic lupus erythematosus    Hypersplenism    B12, folate deficiency    Overwhelming infection    Alcohol    Brucellosis    Sarcoidosis    Tuberculosis    Leishmaniasis