Professor Marek Lubusky, MD, PhD, MHAProfessor Marek Lubusky, MD, PhD, MHA

Lubušký M., Procházka M., Šimetka O., Holusková I. Guideline for prevention of RhD alloimmunization in RhD negative women

ABSTRACT

Events following which anti-D immunoglobulin should be given to all RhD negative women with no anti-D antibodies: First trimester indications (50 μg) - termination of pregnancy, spontaneous abortion followed by instrumentation, ectopic pregnancy, chorionic villus sampling, partial molar pregnancy; Second and third trimester indications (100 μg) – amniocentesis, cordocentesis, other invasive prenatal diagnostic or therapeutic procedures, spontaneous or induced abortion, intrauterine fetal death, attempt at external cephalic version of a breech presentation, abdominal trauma, obstetric haemorrhage; Antenatal prophylaxis at 28th weeks of gestation (250 μg); Delivery of an RhD positive infant * (100 μg); Minimal dose: before 20 weeks gestation - 50 μg (250 IU), after 20 weeks gestation ** - 100 μg (500 IU); Timing: as soon as possible, but no later than 72 hours after the event. In cases where prevention of RhD alloimmunization is not performed within 72 hours of a potentially sensitising event, it is still reasonable to administer anti-D immunoglobulin (IgG anti-D) within 13 days, and in special cases, administration is still recommended up to a maximum interval of 28 days postpartum.; FMH (fetomaternal haemorrhage) - If the amount of fetal erythrocytes which entered the maternal circulation is quantitatively determined, administration of 10 μg IgG anti-D per 0.5 ml of fetal erythrocytes or 1 ml of whole blood is indicated. *also if the RhD type of the infant has not been determined or is in doubt, **in conjunction with a test to assess the volume of any fetomaternal hemorrhage.


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Professor Marek Lubusky, MD, PhD, MHA

THE FETAL MEDICINE CENTRE
Department of Obstetrics and Gynecology
Palacky University Olomouc, Faculty of Medicine and Dentistry
University Hospital Olomouc
I. P. Pavlova 6, 77520 Olomouc, Czech Republic
Tel: +420 585 852 785
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E-mail: marek@lubusky.com
Web: www.lubusky.com