Understanding the Effects of Abnormal Hemoglobin on Red Blood Cells

Altered hemoglobin (e.g., sickle HbS) affects RBCs and health:

1. Sickling: Low O₂ → sickle shape → vaso-occlusion.
2. Hemolysis: Fragile cells rupture → anemia.
3. Impaired O₂ Delivery: Rigid cells hinder tissue oxygenation → pain, fatigue, organ damage.
4. Increased Viscosity: Cell aggregation worsens flow, ischemia.
5. Chronic Inflammation: Cell debris triggers inflammation → vasculopathy, organ damage, infection risk.
6. Splenic Dysfunction: Splenomegaly → impaired clearance → infection susceptibility.
7. Kidney Damage: Microvascular injury → proteinuria, CKD, kidney failure.

Effects vary by hemoglobin variant and severity; understanding guides management.