Management of patients with rare blood groups in maternity

Journal of Obstetrics and Gynaecology : the Journal of the Institute of Obstetrics and Gynaecology
Shannon PytelDiana Badoiu

Abstract

We report on our experiences since 2010 with pregnant women with rare blood types. The lack of compatible blood is a challenge for the anaesthetist whose priority is to prevent and treat anaemia in late pregnancy in order to avoid immunisation after transfusion of incompatible blood. In our hospital, the blood type is checked during the first obstetric consult, which is variable, starting from the fourth month of pregnancy. Rare blood types are most often diagnosed in an advanced stage of pregnancy (30 weeks of gestation: WG) due to the late inscription for obstetrics consult, resulting in even later anaesthetic visit. In our 13 patients, the most common blood systems are Duffy, MNS, and RH. 61.5% of the patients have associated antibodies (anti-MNS5). The majority of patients received iron with significant increase of ferritin (17.24 ± 12.95 μg/L versus 262.2 ± 404.4 μg/L, p = .033). Six of the patients had 2-3 injections of EPO between 29 - 36 + 1 WG. There were no transfers for paediatric management of haemolytic disease in the newborn following the birth. Overall, this treatment of patients with a rare blood group has also changed our practices for the follow-up of other pregnant women, and ferritin is more regularly prescr...Continue Reading

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