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Related Experiment Videos

Oxygen therapy in sickle cell disease.

A Zipursky1, I C Robieux, E J Brown

  • 1Division of Hematology/Oncology, Hospital for Sick Children, Toronto, Ontario, Canada.

The American Journal of Pediatric Hematology/Oncology
|August 1, 1992
PubMed
Summary

Oxygen therapy reduced reversibly sickled cells (RSCs) in sickle cell anemia patients, but did not significantly decrease irreversibly sickled cells (ISCs) or shorten crisis duration. This suggests RSCs may play a role, but oxygen alone isn't sufficient for crisis relief.

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Area of Science:

  • Hematology
  • Pulmonary Medicine
  • Clinical Therapeutics

Background:

  • Sickle cell anemia is characterized by abnormal hemoglobin leading to red blood cell sickling.
  • Reversibly sickled cells (RSCs) and irreversibly sickled cells (ISCs) contribute to vaso-occlusion and pain crises.
  • Oxygen therapy is a common intervention, but its specific impact on sickled cell populations and crisis duration is debated.

Purpose of the Study:

  • To investigate the effect of oxygen therapy on the counts of reversibly sickled cells (RSCs) and irreversibly sickled cells (ISCs) in sickle cell anemia.
  • To determine if reducing RSCs and ISCs with oxygen therapy impacts the clinical outcomes of sickle cell crisis, such as pain, opioid use, and hospitalization.

Main Methods:

  • Studied patients with sickle cell anemia, both in and out of crisis.

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  • Administered 50% oxygen inhalation to non-crisis patients and compared RSC/ISC counts.
  • Randomly assigned 25 patients in crisis to receive either oxygen or air, monitoring RSCs, ISCs, pain duration, opioid use, and hospitalization.

    • Main Results:

    • Oxygen inhalation significantly reduced RSCs and to a lesser extent ISCs in non-crisis patients.
    • In crisis patients, oxygen therapy significantly reduced RSCs but not ISCs.
    • No significant difference in pain duration, opioid administration, or hospitalization was observed between oxygen and air groups in crisis.

    Conclusions:

    • While oxygen therapy can reduce RSCs in sickle cell crisis, this reduction does not translate to a shorter crisis duration.
    • Arterial desaturation during crisis is associated with a reduction in RSCs.
    • The findings suggest that although RSCs may be involved in sickle cell pathophysiology, oxygen therapy alone is insufficient to alleviate crisis severity.