Cyanotic heart defect laboratory findings

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor-in-Chief: Keri Shafer, M.D. [2]

Laboratory Findings

• Erythrocytosis
• Platelet usually low
• Iron deficiency anemia
  • Reduced RBC survival time
  • Increased blood viscosity due to rigid RBCs.
  • Reduces RBCs oxygen carrying capacity
• Hb>20gm/dl
• Increased prothrombin time
• Increased APTT
• Decreased coagulation factors
• Decreased platelets, abnormal platelet function
• High uric acid levels
• Proteinuria

References

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