Browsing by Author "Hakan N."

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    Premature labor and leukoerythroblastosis in a newborn with parvovirus B19 infection.
    (2005) Gulen H.; Basarir F.; Hakan N.; Ciftdogan D.Y.; Tansug N.; Onag A.
    Leukoerythroblastosis is a rarely observed disease characterized by the presence of leukocytosis, erythroid and myeloid blast cells in peripheral blood. To our knowledge, it had not been diagnosed in a premature newborn before the case we report have.A female baby weighing 1164 grams, who was born prematurely at the 29th week of gestation by Cesarean section was referred to our newborn intensive care unit due to prematurity and respiratory distress with no prenatal pathological findings. Physical examination revealed tachypnea and hepatosplenomegaly. Routine laboratory measurements showed significant leukocytosis (85,000/mm3) and anemia (Hb: 9.6 g/dL and Hct: 27.6%). The platelet count was normal. The peripheral blood smear suggested leukoerythroblastosis with the presence of nucleated erythrocytes, monocytosis, and 4% blasts. Bone marrow cytogenetic examination was normal. Parvovirus B19 Ig G and M serology were detected to be positive.The etiological factors observed in leukoerythroblastosis occurring during neonatal and early childhood period are congenital-postnatal viral infections, juvenile myelomonocytic leukemia and osteopetrosis. To our knowledge, no case of leukoerythroblastosis in such an early phase has been reported in the in literature. As a result, premature delivery and leukoerythroblastosis were thought to have developed secondary to intrauterine parvovirus B19 infection.Leukoerythroblastosis is a rarely observed disease characterized by the presence of leukocytosis, erythroid and myeloid blast cells in peripheral blood. It is reported that it can be observed following hematologic malignancies especially juvenile myelomonocytic leukemia, acute infections, hemolytic anemia, osteopetrosis, myelofibrosis, neuroblastoma and taking certain medicines. To our knowledge, it has not been diagnosed in a premature newborn before. Here we the case of a newborn who was referred to our intensive care unit due to being born prematurely at the 29th week of gestation and diagnosed with leukoerythroblastosis.
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    Cord blood nucleated red blood cell level: Is it a predictive marker for neonatal jaundice?
    (Walter de Gruyter GmbH, 2018) Orhon A.; Topal H.; Hakan N.; Ozer E.A.
    The aim of this study was to evaluate if the cord blood nucleated red blood cell (nRBC) levels can predict the development of hyperbilirubinemia in healthy neonates. All healthy newborn infants born after 35 or more weeks of gestation at our hospital between January 2016 and April 2017 were included. The levels of nRBC were counted in umbilical cord blood samples. Neonates were grouped into two study groups based on the presence or absence of neonatal jaundice. The study included overall 149 eligible newborn infants. The levels of nRBC and absolute nRBC count showed statistically significant differences between newborns with or without jaundice (p=0.01 and 0.02, respectively). We suggest that increased nRBC counts in cord blood may be a predictive marker for hyperbilirubinemia in healthy newborn infants. © 2018 2018 Walter de Gruyter GmbH, Berlin/Boston.