OBJECTIVE: We undertook this study to determine the clinical characteristics and the prognostic factors of neonatal survival in patients with fetal anemia who were treated by intraumbilical venous transfusion (IUT). METHODS: From July 2000 to March 2009, 16 cases of fetal anemia were diagnosed at Asan Medical Center in Seoul, Korea. These patients underwent intraumbilical venous transfusions and were thus included in our study. Doppler measurement of the middle cerebral artery peak systolic velocity was performed before and after cordocentesis in all fetuses. RESULTS: The gestational age at the time of the diagnosis of anemia ranged from 21.3 to 33.6 weeks. There was a linear correlation between pre- and post-procedure fetal hemoglobin (Hb,MoM, (x)) and the MCA-PSV (MoM, (y)), i.e., y=0.810-0.229x, r2=0.542, CI 0.316-0.141, p<0.005; and y=1.374-0.391x, r2=0.499, CI 0.584-0.197, p<0.005. The survival was better in patients with severe anemia than those with mild to moderate anemia (p<0.05), and survival was better in patients with anemia of a known cause than those with anemia of an unknown cause (p<0.001). CONCLUSION: In fetuses with anemia, the severity of the anemia before IUT and the change of hemoglobin concentration after IUT, can be estimated noninvasively using Doppler ultrasonography, on the basis of an increase in the peak velocity of systolic blood flow in the middle cerebral artery. Both severity and etiology were meaningful factors for the survival of neonates with fetal anemia who were treated by intraumbilical venous transfusion. Although fetuses have severe anemia, they expected improved survival through IUT. These data are valuable information for use when counseling the parents of an affected fetus.
Anemia ; Blood Transfusion, Intrauterine ; Cordocentesis ; Counseling ; Fetal Hemoglobin ; Fetus ; Gestational Age ; Hemoglobins ; Humans ; Hydrops Fetalis ; Infant, Newborn ; Korea ; Middle Cerebral Artery ; Parents ; Ultrasonography, Doppler

Since the introduction of Rh-immune globulin in 1968, the incidence of Rh D hemolytic disease of the newborn(HDN) had become markedly reduced but in the contrary the HDN by minor blood group antibodies has become increased relatively. As anti-E is the most common minor blood group antibody identified in antenatal serology and because of the frequency of E-negative people in Korea is ranged from 38.8% to 50.3%, the probability of HDN caused by anti-E is expected relatively high. We had experienced antenatal therapy for a E-isoimmunized pregnant woman, who has the history of one previous stillbirth and one neonatal death. In addition to above obstetric history, she had a history of blood transfusion, in which she was given 7 units of whole blood during the operation of brain cyst 7 years ago, before her marriage. Therapeutic plasma exchanges were repeated from the 22nd to 25th weaks of gestation. During the period a mean volume of 350mL plasma volume was exchanged on average twice a week. After the period, therapeutic plasma exchange procedure was failed because of unsuccessful vascular access. So that we gave her intravenous immunoglobulin(IVIG), 0.4gm/kg for 5 days, and two intrauterine transfusion were given at 25th and 27th weeks of gestation to relief from grave HDN. The maximal antiglobulin titer of anti-E during the gestation period was 1:32. In spite of intensive therapy as above mentioned, she was delivered a severely hydropic fetus weighing 1,900g at 29th weeks of gestation under Cesarean section. The neonate died 2 days after the birth with severe erythroblastosis fetalis and disseminated intravascular coagulation (DIC). Even though we could not save the baby, we report this experience as a reviewable case of antenatal treatment modalities for Rh immunization and the serious consequence of blood transfusion before marriage.
Antibodies ; Blood Transfusion ; Blood Transfusion, Intrauterine* ; Brain ; Cesarean Section ; Disseminated Intravascular Coagulation ; Erythroblastosis, Fetal ; Female ; Fetus ; Humans ; Immunization ; Immunoglobulins, Intravenous* ; Incidence ; Infant, Newborn ; Korea ; Marriage ; Parturition ; Plasma Exchange* ; Plasma Volume ; Plasma* ; Pregnancy ; Pregnant Women ; Stillbirth

OBJECTIVETo summarize and review the clinical characteristics including clinical features, prenatal characteristics, diagnosis, treatments and short-term outcomes of the twin anemia-polycythemia sequence (TAPS) to improve the recognition of the disease.

METHODThe clinical data of one case with twin anemia-polycythemia sequence and the reports of 15 cases seen in the past 5 years were reviewed and analyzed.

RESULTThere was an increasing number of reports of cases with TAPS. Prenatal manifestation: among the 16 cases, TAPS occurred in 13 cases naturally and in 3 cases occurred after laser treatment. Amniotic fluid volume showed no significant difference in 16 cases. Middle cerebral artery peak systolic velocity (MCA-PSV) > 1.5 multiples of the median (MoM) in the donor were 11/16 cases and 3/16 cases were not tested. MCA-PSV < 1.0 MoM in the recipient were seen in 10/16 cases and in 3/16 cases MCA-PSV was not tested. Hydrops fetalis was found in 6/16 cases. Intrauterine intervention: intrauterine blood transfusion was performed in 4/16 cases, fetoscopic laser occlusion of chorioangiopagus vessels was performed in 4/16 cases, umbilical cord occlusion selective feticide was done in 2/16 cases and intrauterine hemodilution in the recipient was performed in 1/16 case. Postnatal manifestation: average hemoglobin concentration in the anemic neonate was 95 g/L and in the polycythemic one was 208 g/L, intertwin Hb difference was > 80 g/L in 10/16 cases and < 80 g/L in 2/16 cases (after intrauterine laser treatment). Intertwin reticulocyte count ratio was > 1.7 in 5/16 cases and < 1.7 in 1/16 case (after intrauterine laser treatment). Postnatal treatment: 9/16 cases of donor had anemia, among them, 6/16 cases were given blood transfusions, 6/16 cases of recipient with hyperviscosity underwent partial exchange transfusions. Neurodevelopmental follow-up during neonatal period was normal in 11/16 cases, in our case, neurodevelopmental follow-up at the corrected gestational age 3 months was normal.

CONCLUSIONTAPS is a new atypical form of twin-twin transfusion syndrome (TTTS) that presents as a large intertwin hemoglobin difference with one twin developing anemia and the other developing polycythemia, without oligohydramnios-polyhydramnios sequence that is required for the diagnosis of TTTS. We suggest that routine doppler studies and MCA-PSV measurements should be performed during each follow-up visit in all uncomplicated monochorionic twin pregnancies, in order to find out the cases required intrauterine intervention to decrease neonatal mortality rates and improve the prognosis.

Anemia ; diagnosis ; etiology ; therapy ; Blood Flow Velocity ; Blood Transfusion, Intrauterine ; Female ; Fetofetal Transfusion ; complications ; diagnosis ; Gestational Age ; Hemoglobins ; analysis ; Humans ; Infant, Newborn ; Laser Coagulation ; Male ; Middle Cerebral Artery ; diagnostic imaging ; physiopathology ; Polycythemia ; diagnosis ; etiology ; therapy ; Pregnancy ; Pregnancy Complications, Hematologic ; diagnosis ; therapy ; Prognosis ; Twins, Monozygotic ; Ultrasonography, Prenatal