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CASE REPORTS
ENGLISH ABSTRACT
JOURNAL ARTICLE
[Kell immunization--a case report].
Medicinski Pregled 2009 July
INTRODUCTION: The frequency of occurrence of RhD alloimmunization, due to preventive protocols, is decreased in our country, but more often there are other antigens that emerge as a cause of hemolytic disease of fetus. The most prominent is Kell antigen, which promotes specific course of disease based on an innate pathogenetic mechanism. Anti-Kell antibody production is, just as in other atypical antibodies, provoked with transfusion of incompatible blood. Except for the immune-mediated hemolysis, anti-Kell antibodies can also inhibit the function of progenitor (erytroid and megakariocyte) cell lines.
CASE REPORT: We present the case of G1P1 woman in whom a distinct fetal hydrops was sonographically detected in the 28th week of pregnancy. The results of immunological tests undoubtedly pointed to Kell immunization (anti-Kell antibody titer was more than 1:32), and antenatal tests for evaluation of fetal condition (Doppler ultrasound and CTG) clearly showed the severe form of hemolytic disease. We concluded that the fetus was in a hopeless, terminal stage of the disease, and then decided to terminate the pregnancy.
CONCLUSION: The only clinical approach to a problem of Kell alloimunization is active one. Early cordocentesis is recommended as the optimal method for evaluation of fetal condition. The clinical outcome of the fetus will strictly depend on a timely intrauterine transfusion (IUT) procedure. Prophylaxis emerges as a crucial factor in prevention of Kell-alloimmunization. It is to be considered that all females in childhood and throughout the reproductive period should take only K1-negative blood transfusion in order to decrease the incidence of Kell-alloimmunization.
CASE REPORT: We present the case of G1P1 woman in whom a distinct fetal hydrops was sonographically detected in the 28th week of pregnancy. The results of immunological tests undoubtedly pointed to Kell immunization (anti-Kell antibody titer was more than 1:32), and antenatal tests for evaluation of fetal condition (Doppler ultrasound and CTG) clearly showed the severe form of hemolytic disease. We concluded that the fetus was in a hopeless, terminal stage of the disease, and then decided to terminate the pregnancy.
CONCLUSION: The only clinical approach to a problem of Kell alloimunization is active one. Early cordocentesis is recommended as the optimal method for evaluation of fetal condition. The clinical outcome of the fetus will strictly depend on a timely intrauterine transfusion (IUT) procedure. Prophylaxis emerges as a crucial factor in prevention of Kell-alloimmunization. It is to be considered that all females in childhood and throughout the reproductive period should take only K1-negative blood transfusion in order to decrease the incidence of Kell-alloimmunization.
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