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Published byMaurice Ogburn Modified over 10 years ago
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BY: KATRINA APODACA
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Daily Vitamin › Used as a supplemental intake of iron and other essential vitamins in order to increase overall health benefits Prenatal Vitamin › Used during pregnancy.
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It is a nutritional deficiency › Children & pre-menopausal woman are the most prone to developing this deficiency Affects about 1/3 of the world population › About 1 billion people suffer with iron deficiency anemia, the most severe stage of iron deficiency
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Adults › Have less energy and less ability to work Pregnant Women › Have poorer short-term memory and attention span Adolescents › Have poorer verbal learning and memory Infants › Have more respiratory infections
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Stage 1—Depletion of Iron Stores Stage 2—Iron Deficiency without Anemia Stage 3—Iron Deficiency Anemia (IDA) › All three deficiencies require an additional supplemental intake of iron
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Stage 1 Iron is normally stored in the liver, spleen, and bone as ferritin. › Ferritin is the main intracellular iron protein › Ferritin levels are measured and have a direct correlation with the amount of iron stored in the body. In this stage blood measures of hemoglobin and hematocrit usually remain in the normal range.
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Stage 2 Iron transport through the body decreases Hemoglobin concentration and hematocrit remain in the normal range › However ranges may be closer to the low end of the normal range
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Stage 3 Advanced stage of iron deficiency The absorption of iron is insignificant Hemoglobin synthesis is impaired › Subnormal hemoglobin concentrations and hematocrits are the indications of anemia
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Formation of hemoglobin & certain enzymes Essential for many enzymes that sustain good health Transport oxygen in the blood to all parts of the body,
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Regulate cell growth and differentiation Regulate immune activity Essential for proper functioning of the liver Protects against the actions of free radicals.
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PharmacologyManifestations Cellular effects of Iron Target organ damage GI irritation Vomitting, Bloody diarrhea Damage to mucosal cells Leukocytosis & fever Venous pooling & Increase blood viscosity Hypotension Decrease brain perfusion/direct effect of iron Lethary Direct action of iron/ferritinVasodilation Shock Complications of liver failureHypoglycemia Fatty degeneration of renal cells Renal impairment Ferrous mediated peroxidation Pulmonary hemorrhage/edema
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Young children are the most common hospitalized for iron poisoning › Minimum that has been reported is a total of only 200mg of iron that has killed a child Equivalent to 7-prenatal vitamins Children with infant siblings are at greater risk › Due to perinatal iron therapy of postpartum mothers
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Corrosive Uncouples Oxidative Phosphorylation Free Radical Production Metabolic Acidosis Disruption of Coagulation Proteins
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It is a disturbance of acid-base balance › Results in excessive acidity of the blood Directly related symptoms include rapid breathing, confusion and lethargy Can lead to shock or death
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Occurs in Phases › Phase I: Gastric › Phase II: Latency › Phase III: Shock & Cyanosis › Phase IV: Hepatic Necrosis › Phase V: GI Scarring
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a a Phase I : Gastric › 0-6 hrs post › Vomiting, lethargy, explosive diarrhea, asympotomatic, coma/semi-coma, irritability, seizures and hypovolemic shock Phase II: Latency › 6-24 hrs post › Stabilization and subjective improvement › Complete recovery if mild to moderate ingestion Phase III: Shock & Cyanosis › 12-48 hrs post › Distributive shock, vascular collapse, refractory acidosis with cyanosis and fever Phase IV: Hepatic Necrosis › 48-96 hrs post Cardiogenic shock and hepatic failure Complications of liver failure Phase V: Scarring › Pyloric scarring and gastrointestinal obstruction
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Deferoxamine › Mechanism of Action Chelating agent that removes excess iron Binds free iron to form ferrioxamine which leads to prevention of absorption and thus enhancing elimination via urine › Dose / Administration Technique Intravenous - ≤15 mg/kg/hr Max - 6 grams per day
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Hypotension due to rapid injection Anaphylactoid reaction with rapid injection Hypotension associated with ferrioxamine accumulation in patients with renal impairment
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Fever, dysuria, leg cramps, rashes and puritis Acute respiratory distress syndrome (ARDS) with infusion durations greater than 24 hrs › Severe lung disease › characterized by a diffuse inflammation of lung parenchyma
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When to call Signs/ Symptoms Suspect Overdose
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Anderson AC. Iron poisoning in children. Curr Opin Pediatr 1994;6(3): 289-94. Tenenbein M, Rodgers GC. The four A's of decreasing the toll of childhood iron poisoning deaths. Arch Fam Med 1994;3:754-5. Reynolds LG, Klein M. Iron poisoning — a preventable hazard of childhood. S Afr Med J 1985;67(17):680-3. Fine JS. Iron poisoning. Curr Probl Pediatr 2000;30(3):71-90. Shannon M. Ingestion of toxic substances by children. N Engl J Med 2000; 342 (3): 186-91. Litovitz TL, Felberg L, White S, Klein-Schwartz W. 1995 annual report of the American Association of Poison Control Centers Toxic Exposure Surveillance System. Am J Emerg Med 1996;14(5):487-537. Litovitz TL, Smilkstein M, Felberg L, Klein-Schwartz W, Berlin R, Morgan JL. 1996 annual report of the American Association of Poison Control Centers Toxic Exposure Surveillance System. Am J Emerg Med 1997;15(5):447-500. Litovitz TL, Klein-Schwartz W, Dyer KS, Shannon M, Lee S, Powers M. 1997 annual report of the American Association of Poison Control Centers Toxic Exposure Surveillance System. Am J Emerg Med 1998;16(5):443-97.
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