IRON DEFICIENCY ANEMIA презентация

IRON DEFICIENCY ANEMIA

PLAN

ANEMIA - DEFINITION REDUCTION OF HEMOGLOBIN CONCENTRATION BELOW REFERENCE VALUE

BLOOD PARAMETERS Hemoglobin concentration (Hg) F: 7,2 –10; M: 7,8-11,3 mmol Fe/l (12-18 g/dl) Erythrocytes count (RBC) F: 4-5,5; M: 4,5-6 x1012/l (4-6 x106 /l) Hematocrit (Hct) F: 37-47; M: 40-54; (37-54%) Platelet count (Plt) 150 – 450 x 103/l (150-450 x 109/l) Leukocytes count (WBC) 4-10 x 109/l (4-10 x 103/ l)

Erythrocytes parameters Mean corpuscular volume (MCV) N: 80-100 fl RDW(Red cell Distrubution Width) Mean corpuscular hemoglobin (MCH) N: 27-34 pg Mean corpuscular hemoglobin concentration (MCHC) N: 310 – 370 g/lRBC (31-37 g/dl)

Reticulocytes RET: 0,5-2% ARC (absolute reticulocyte count ): 25-75x 109/l CRC (corrected reticulocyte count) RPI (reticulocyte production index)

IRON METABOLISM Iron concentration (Fe) N: 50-150 g/dl Total Iron Binding Capacity N: 250-450 g/dl Transferrin saturation Transferrin receptor concentration Ferritin concentration N: 50-300 g/l

IRON DEFICIENCY ANEMIA IRON METABOLISM ABSORPTION IN DUODENUM TRANSFERRIN TRANSPORTS IRON TO THE CELLS FERRITIN AND HEMOSYDERIN STORE IRON 10% of daily iron is absorbed

Most body iron is present in hemoglobin in circulating red cells The macrophages of the reticuloendotelial system store iron released from hemoglobin 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)

IRON DEFICIENCY - STAGES Prelatent reduction in iron stores without reduced serum iron levels Hb (N), MCV (N), iron absorption (), transferin saturation (N), serum ferritin (), marrow iron () Latent iron stores are exhausted, but the blood hemoglobin level remains normal Hb (N), MCV (N), TIBC (), serum ferritin (), transferrin saturation (), marrow iron (absent) Iron deficiency anemia blood hemoglobin concentration falls below the lower limit of normal Hb (), MCV (), TIBC (), serum ferritin (), transferrin saturation (), marrow iron (absent)

IRON DEFICIENCY ANEMIA ETIOLOGY: BLOOD LOSS Chronic bleeding MENORRHAGIA PEPTIC ULCER STOMACH CANCER ULCERATIVE COLITIS INTESTINAL CANCER HAEMORRHOIDS Intravascular hemolysis Pulmonary hemosiderosis Response to erythropoietin DECREASED IRON INTAKE INCREASED IRON REQUIRMENT (JUVENILE AGE, PREGNANCY, LACTATION) CONGENITAL IRON DEFICIENCY

IRON DEFICIENCY ANEMIA GENERAL ANEMIA’S SYMPTOMS: FATIGABILITY DIZZINESS HEADACHE SCOTOMAS IRRITABILITY ROARING PALPITATION CHD, CHF

CHARACTERISTIC SYMPTOMS GLOSSITIS, STOMATITIS DYSPHAGIA ( Plummer-Vinson syndrome) ATROPHIC GASTRITIS DRY, PALE SKIN SPOON SHAPED NAILS, KOILONYCHIA, BLUE SCLERAE HAIR LOSS PICA (APETITE FOR NON FOOD SUBSTANCES SUCH AS ICE, CLAY) SPLENOMEGALY (10%) INCREASED PLATELET COUNT

 

IRON DEFICIENCY ANEMIA MCV MCH MCHC N Fe TIBC and sTfR TRANSFERIN SATURATION FERRITIN

BLOOD AND BONE MARROW SMEAR BLOOD: microcytosis, hipochromia, anulocytes, anisocytosis poikilocytosis BONE MARROW high cellularity mild to moderate erythroid hyperplasia (25-35%; N 16 – 18%) polychromatic and pyknotic cytoplasm of erythroblasts is vacuolated and irregular in outline (micronormoblastic erythropoiesis) absence of stainable iron

Normal Blood Film

MICROCYTES

HYPOCHROMIA

Management History and physical examination is sufficient to exclude serious disease (e.g pregnant or lactating women, adolescents) - CURE ANEMIA History and/or physical examination is insufficient (e.g old men, postmenopausal women) - FIND ETIOLOGY OF ANEMIA AND CURE (CAUSAL TREATMENT) Benzidine test Gastroscopy Colonoscopy Gynaecological examination

DIETARY IRON There are 2 types of iron in the diet; haem iron and non-haem iron Haem iron is present in Hb containing animal food like meat, liver & spleen Non-haem iron is obtained from cereals, vegetables & beans Milk is a poor source of iron, hence breast-fed babies need iron supplements

ORAL IRON ABSORPTION TEST 1. baseline serum iron level 2. 200 - 400 mg of elemental iron orally 3. serum iron level 1-4 hours after ingestion An increase in serum iron of at least 100 microg/dL indicates that oral iron absorption is generally adequate

IRON DEFICIENCY ANEMIA CURE ORAL 200 mg of iron daily 1 hour before meal (e.g. 100 mg twice daily) How long? 14 days + (Hg required level – Hg current level) x 4 half of the dose - 6 – 9 months to restore iron reserve

IRON DEFICIENCY ANEMIA CURE PARENTERAL IRON SUBSTITUTION Bad oral iron tolerance (nausea, diarrhoea) Negative oral iron absorption test Necessity of quick management (CHD, CHF) iron to be injected (mg) = (15 - Hb/g%/) x body weight (kg) x 3 IM or IV ? (risk of anaphilactic reactions) Intramuscular iron — Mobilization of iron from intramuscular (IM) sites is slow and occasionally incomplete. As a result, the rise in the hemoglobin concentration is only slightly faster than that which occurs following the use of oral iron preparations. Ferric carboxymaltose — is a novel stable iron complex for intravenous (IV) use which can be given at single doses of up to 1000 mg of elemental iron per week over a recommended infusion time of 15 minutes. A number of trials have shown efficacy and safety of this agent in iron deficient patients.

References  "NPS News 70: Iron deficiency anaemia". NPS Medicines Wise. October 1, 2010. Retrieved November 5, 2010. World Health Organization Fact Sheet No. 366, Soil-Transmitted Helminth Infections, updated June 2013 "Iron deficiency anemia". Mayo Clinic. March 4, 2011. Retrieved December 11, 2012.  Decsi, T.; Lohner, S. (2014). "Gaps in meeting nutrient needs in healthy toddlers.". Ann Nutr Metab. 65 (1): 22–8. doi:10.1159/000365795. PMID 25227596. Handout: Iron Deficiency Anemia – National Anemia Action Council Norris, Jack. B12: Are You Getting It? Vegan Outreach. Available online: http://www.veganhealth.org/b12, Accessed October 26, 2009