Is Rh immunoglobulin indicated in patients having puerperal sterilization?

Area of Science:

• Immunology
• Transfusion Medicine
• Obstetrics & Gynecology

Background:

• Rh isoimmunization is a concern for Rh-negative women.
• Prophylactic Rh immunoglobulin (RhIG) is recommended for Rh-negative women undergoing sterilization to prevent Rh isoimmunization.
• This practice aims to enable future transfusions with Rh-positive blood if needed.

Purpose of the Study:

• To evaluate the necessity of routine RhIG administration in Rh-negative women undergoing sterilization.
• To assess the actual incidence of Rh-positive blood transfusions given to Rh-negative women in emergency situations.

Main Methods:

• A survey was conducted across 23 hospitals in the United States and 95 hospitals in Iowa.
• Data were collected on the transfusion practices for Rh-negative women, particularly in emergency settings.

Main Results:

• The survey revealed that Rh-positive blood is rarely transfused to Rh-negative women, even in emergencies.
• Only a small percentage (less than 2%) of Rh-negative women who are sensitized (7 out of 100) are likely to ever receive Rh-positive blood.

Conclusions:

• The routine prophylactic use of Rh immunoglobulin for Rh-negative women undergoing sterilization may not be advisable.
• Current transfusion practices suggest a low likelihood of Rh-positive blood transfusion for sensitized Rh-negative women, questioning the cost-effectiveness and necessity of universal RhIG prophylaxis.