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TABLE 3 Acute Hemolytic Anemia: Presentation and Management
Cause Presentation Supporting Evidence Management
DIC History of underlying cause: sepsis, Normocytic anemia Evaluate and treat underlying cause
trauma, malignancy, heat stroke, Prolonged PT/aPTT Platelet transfusion (if <50,000/mm )
3
liver disease Elevated D-dimer Consider TXA if active bleeding
Fever Thrombocytopenia Consider FFP, cryoprecipitate transfusion
Petechiae/purpura Low fibrinogen
Bleeding
Thrombosis
HUS Bloody diarrhea Elevated SCr level Supportive care
Abdominal pain Thrombocytopenia Dialysis may be needed
Oliguria Schistocytes on peripheral smear Avoid antibiotics
Normal coagulation panel
TTP History of ADAMTS13 deficiency Elevated SCr level Plasma exchange
History of HIV, pregnancy, use of Thrombocytopenia Consider FFP while awaiting plasma exchange
acyclovir, clopidogrel, quinine Schistocytes on peripheral smear
Fever Normal coagulation panel
CNS abnormalities
Oliguria
GI bleed
AIHA Provoking medications: penicillin, Positive direct antiglobulin test Corticosteroids:
cephalosporins, NSAIDs, Spherocytes on peripheral smear IV methylprednisolone 100-200mg divided
hydrocortisone, isoniazid Normal coagulation panel over 24 h
Oral prednisone 60-100mg schistocytes causes
AIHA, autoimmune hemolytic anemia; aPTT, activated partial thromboplastin time; CNS, central nervous system; DIC, disseminated intravas-
cular coagulopathy; FFP, fresh-frozen plasma; GI, gastrointestinal; HIV, human immunodeficiency virus; HUS, hemolytic uremic syndrome; IV,
intravenous; NSAIDs, nonsteroidal anti-inflammatory drugs; PT, prothrombin time; SCr, serum creatinine; TTP, thrombotic thrombocytopenic
purpura; TXA, tranexamic acid.
administration, although their availability in local host-nation 2. Bryan LJ, Zakai NA. Why is my patient anemic? Hematol Oncol
facilities may be limited. 1,44,67,68 If intravenous iron is given, Clin North Am. 2012;26(2):205–230.
oral supplementation is still recommended for continued treat- 3. Vieth JT, Lane DR. Anemia. Emerg Med Clin North Am.
2014;32(3):613–628.
ment of IDA. 1,44 4. World Health Organization. Haemoglobin concentrations for the
diagnosis of anaemia and assessment of severity. Geneva, Switzer-
land: World Health Organization; 2011. https://apps.who.int
Conclusion /iris/bitstream/handle/10665/85839/WHO_NMH_NHD_MNM
The prevalence of anemia in military populations and possible _11.1_eng.pdf
acute complications from trauma and disease necessitate the 5. Schop A, Stouten K, Riedl JA, et al. A new diagnostic work-up for
defining anemia etiologies: a cohort study in patients ≥ 50 years in
medic’s understanding to properly assess and treat causes. De- general practices. BMC Fam Pract. 2020;21(1):167.
spite their availability, the limitations of point-of-care testing 6. Lanier JB, Park JJ, Callahan RC. Anemia in older adults. Am Fam
devices to differentiate anemia beyond diagnostic hemoglobin Physician. 2018;98(7):437–442.
concentrations force medics to understand anemia pathologies 7. Karakochuk CD, Hess SY, Moorthy D, et al. Measurement and
and initial stabilization and care. interpretation of hemoglobin concentration in clinical and field
settings: a narrative review. Ann N Y Acad Sci. 2019;1450(1):
126–146.
Disclaimer 8. Chaparro CM, Suchdev PS. Anemia epidemiology, pathophysiol-
The views expressed herein are those of the authors and do not ogy, and etiology in low- and middle-income countries. Ann N Y
reflect the official policy or position of Madigan Army Medi- Acad Sci. 2019;1450(1):15–31.
cal Center, the U.S. Army Medical Department, the U.S. Army 9. Cascio MJ, DeLoughery TG. Anemia: evaluation and diagnostic
tests. Med Clin North Am. 2017;101(2):263–284.
Office of the Surgeon General, the Department of the Army, or 10. Beutler E, Waalen J. The definition of anemia: what is the lower
the Department of Defense or the U.S. Government. limit of normal of the blood hemoglobin concentration? Blood.
2006;107(5):1747–1750.
11. Tettamanti M, Lucca U, Gandini F, et al. Prevalence, incidence and
Authorship and Contributors Statement types of mild anemia in the elderly: the “Health and Anemia” pop-
All authors conceived the review concept, wrote the first draft, ulation-based study. Haematologica. 2010;95(11):1849–1856.
and read, provided critical revisions for, and approved the fi- 12. McLean E, Cogswell M, Egli I, Wojdyla D, de Benoist B. World-
nal manuscript. wide prevalence of anaemia, WHO Vitamin and Mineral Nutri-
tion Information System, 1993–2005. Public Health Nutr. 2009;
12(4):444–454.
Conflicts of Interest 13. Kassebaum NJ; GBD 2013 Anemia Collaborators. The global
The authors have no conflicts of interest or relevant disclo- burden of anemia. Hematol Oncol Clin North Am. 2016;30(2):
sures to report. 247–308.
14. Kristinsson G, Shtivelman S, Hom J, Tunik MG. Prevalence of
occult anemia in an urban pediatric emergency department: what
Funding
We received no funding for this research. is our response? Pediatr Emerg Care. 2012;28(4):313–315.
15. Pitetti RD, Lovallo A, Hickey R. Prevalence of anemia in children
presenting with apparent life-threatening events. Acad Emerg
References Med. 2005;12(10):926–931.
1. Long B, Koyfman A. Emergency medicine evaluation and man- 16. Myhre KE, Webber BJ, Cropper TL, et al. Prevalence and im-
agement of anemia. Emerg Med Clin North Am. 2018;36(3): pact of anemia on basic trainees in the US Air Force. Sports Med
609–630. Open. 2015;2:23.
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