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Iron deficiency anemia.

Shersten Killip1, John M Bennett, Mara D Chambers

  • 1Department of Family and Community Medicine, University of Kentucky, Lexington, Kentucky, USA.

American Family Physician
|March 23, 2007
PubMed
Summary
This summary is machine-generated.

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Iron deficiency anemia affects various demographics, with higher prevalence in women and older adults. Early diagnosis and appropriate screening, including endoscopic evaluation for older patients, are crucial for effective management and identifying underlying conditions like gastrointestinal cancer.

Area of Science:

  • Hematology
  • Gastroenterology
  • Internal Medicine

Background:

  • Iron deficiency anemia (IDA) presents with varying prevalence across different demographic groups, including adult men, non-Hispanic white women, and Black and Mexican-American women.
  • A significant percentage of older adults (over 65) with IDA are found to have gastrointestinal cancer upon evaluation.
  • Current screening recommendations from the U.S. Preventive Services Task Force primarily target pregnant women, with routine iron supplementation advised for high-risk infants.

Purpose of the Study:

  • To outline the diagnostic approaches and management strategies for iron deficiency anemia.
  • To highlight the importance of considering gastrointestinal pathology in patients with IDA, particularly in older populations.
  • To review the differential diagnosis of microcytic anemia and the role of various laboratory tests and procedures.

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Main Methods:

  • Characterization of IDA prevalence in diverse populations.
  • Review of diagnostic tests including serum ferritin, total iron-binding capacity, transferrin saturation, and serum transferrin receptor.
  • Guidance on diagnostic workup, including empirical iron trials for specific groups and endoscopic evaluation (colonoscopy) for patients over 50.

Main Results:

  • IDA prevalence varies significantly by age, sex, and ethnicity.
  • Gastrointestinal cancer is a notable comorbidity in older patients diagnosed with IDA.
  • Serum ferritin is the primary diagnostic marker, with other tests and bone marrow biopsy used for ambiguous cases.

Conclusions:

  • Timely and accurate diagnosis of IDA is essential, utilizing appropriate initial tests like serum ferritin.
  • Endoscopic evaluation is recommended for patients over 50 with IDA to rule out gastrointestinal malignancy.
  • Management strategies should be tailored based on patient demographics, risk factors, and diagnostic findings.