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[Polycythemia resulting from abnormal hemoglobin with increased affinity for oxygen. Two cases (author's transl)]
La Nouvelle Presse Medicale
|January 26, 1980
Summary
Suspect abnormal hemoglobin with high oxygen affinity in polycythemia cases lacking other causes. Diagnosis involves specialized blood tests, and this condition requires careful management to balance oxygen delivery and cardiovascular risk.
Area of Science:
- Hematology
- Medical Genetics
Background:
- Polycythemia, characterized by elevated red blood cell counts, can stem from various causes.
- When common reasons like polycythemia vera or erythropoietic stimulation are absent, abnormal hemoglobin variants should be considered.
Observation:
- Two cases are presented: a 44-year-old male with Hemoglobin (Hb) Kempsey and a 58-year-old female with Hb Malmö.
- Both patients exhibited polycythemia without typical underlying causes.
Findings:
- Diagnosis of abnormal hemoglobin requires detailed electrophoretic analysis, specifically isoelectric focusing on polyacrylamide gel.
- Assessment of red blood cell oxygen binding properties is crucial for confirming these variants.
Implications:
- Polycythemia due to high-affinity hemoglobin functions as a compensatory mechanism for tissue oxygen delivery.
- Management strategies must balance the benefits of improved oxygenation with potential cardiovascular risks.