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Derivados de la hemoglobina - Results

Nombres alternativos

Metahemoglobina; Caboxihemoglobina; Sulfahemoglobina

Valores normales:

Los valores siguientes representan el porcentaje de derivados de hemoglobina sobre la base de la hemoglobina total:

  • Carboxihemoglobina: menos del 3% (pero puede ser hasta del 15% en los fumadores)
  • Metahemoglobina: menos del 3%
  • Sulfahemoglobina: indetectable

Los rangos de los valores normales pueden variar ligeramente entre diferentes laboratorios. Hable con el médico acerca del significado de los resultados específicos de su examen.

Los ejemplos anteriores muestran las mediciones comunes para los resultados de estas pruebas. Algunos laboratorios usan diferentes medidas o podrían evaluar diferentes muestras.

Significado de los resultados anormales:

Los altos niveles de los derivados de la hemoglobina pueden llevar a problemas de salud considerables. Las formas alteradas de la hemoglobina no permiten que el oxígeno sea transportado adecuadamente a través del cuerpo, lo cual puede llevar a la muerte de tejidos.

A excepción de la sulfahemoglobina, los siguientes valores representan el porcentaje de derivados de la hemoglobina sobre la base de la hemoglobina total:

Carboxihemoglobina:

  • 10 a 20%: comienzan a aparecer los síntomas de intoxicación por monóxido de carbono
  • 30%: se presenta intoxicación grave por monóxido de carbono
  • 50% a 80%: ocasiona intoxicación mortal por monóxido de carbono

Metahemoglobina:

  • 10% a 25%: ocasiona cianosis
  • 35% a 40%: ocasiona dificultad respiratoria y dolor de cabeza
  • Superior al 60%: ocasiona letargo y estupor
  • Superior al 70% ocasiona la muerte

Sulfahemoglobina:

  • Los valores de 10 gramos por decilitro (g/dL) ocasionan coloración azulada de la piel debido a la falta de oxígeno ( cianosis), pero no producen efectos dañinos.
  • Reviewed last on: 5/30/2011
  • David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

Referencias

Benz EJ Jr, Ebert BL. Hemoglobin variants associated with hemolytic anemia, altered oxygen affinity, and methemoglobinemias. In: Hoffman R, Benz EJ Jr, Shattil SJ, et al, eds. Hoffman Hematology: Basic Principles and Practice. 5th ed. Philadelphia, Pa: Churchill Livingstone Elsevier; 2008:chap 44.

Christiani DC. Physical and chemical injuries of the lung. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 94.

Nagel RL. Methemoglobinemias and unstable hemoglobins. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 168.

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