A recent report analyzed the case of a 42-year-old Hispanic woman with severe iron deficiency anemia presented with fatigue and dizziness. She underwent successful treatment with blood transfusions and intravenous iron, leading to symptom resolution and return to normal activity. This case is notable for the lowest recorded hemoglobin level in a stable patient without the need for cardiac or supplemental oxygen support.

Reference: Chai AL, Huang OY, Rakočević R, Chung P. Critical iron deficiency anemia with record low hemoglobin: a case report. J Med Case Rep. 2021 Sep 13;15(1):472. doi: 10.1186/s13256-021-03024-9. PMID: 34517883; PMCID: PMC8439022.