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2. Issues for standardization of neonatal bilirubinemia: a case of delayed phototherapy initiation.

Author

Vaubourdolle, Michel and Mailloux, Agnès

Subjects
*DELIVERY (Obstetrics), *NEONATAL jaundice, *BLOOD groups, *PEDIATRIC therapy, *HOSPITAL maternity services
Abstract

This letter discusses the issue of standardizing the measurement of neonatal bilirubin levels, which is important for the management of jaundice in newborns. The authors highlight the potential errors and delays in decision-making that can occur due to inter-technical differences in bilirubin measurement methods. They present a case study to illustrate the impact of these differences on pediatric care. The authors suggest actions that clinical laboratories and healthcare providers can take to improve the accuracy and efficiency of bilirubin measurement and management. They emphasize the need for international harmonization and collaboration in this area. [Extracted from the article]

Published
2024
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3. Bilirubin measurements in neonates: uniform neonatal treatment can only be achieved by improved standardization.

Author

Hulzebos, Christian V., Camara, Johanna E., van Berkel, Miranda, Delatour, Vincent, Lo, Stanley F., Mailloux, Agnès, Schmidt, Marcel C., Thomas, Mercy, Mackay, Lindsey G., and Greaves, Ronda F.

Subjects
NEONATAL jaundice, CLINICAL chemistry, CHEMICAL laboratories, BILIRUBIN, INTERNATIONAL organization
Abstract

Measurement of total bilirubin (TBil) concentration in serum is the gold standard approach for diagnosing neonatal unconjugated hyperbilirubinemia. It is of utmost importance that the measured TBil concentration is sufficiently accurate to prevent under treatment, unnecessary escalation of care, or overtreatment. However, it is widely recognized that TBil measurements urgently require improvement in neonatal clinical chemistry. External quality assessment (EQA) programs for TBil assess for differences between laboratories and provide supporting evidence of significant differences between various methods, manufacturers and measurement platforms. At the same time, many countries have adopted or only slightly adapted the neonatal hyperbilirubinemia management guidelines from the USA or UK, often without addressing differences in the methodology of TBil measurements. In this report, we provide an overview of the components of bilirubin that are measured by laboratory platforms, the availability of current reference measurement procedures and reference materials, and the role of EQA surveys in this context. Furthermore, the current status of agreement in neonatal bilirubin against clinical decision thresholds is reviewed. We advocate for enhancements in accuracy and comparability of neonatal TBil measurements, propose a path forward to accomplish this, and reflect on the position of the International Federation for Clinical Chemistry and Laboratory Medicine (IFCC) Working Group Neonatal Bilirubin (WG-NB) in this matter. [ABSTRACT FROM AUTHOR]

Published
2024
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6. Validated Reference Panel from Renewable Source of Genomic DNA Available for Standardization of Blood Group Genotyping

Author

Arnoni, Carine P., de Paula Vendrame, Tatiane A., Bein, Gregor, Sachs, Ulrich J., Aravechia, Maria G., Bub, Carolina B., Bunce, Mike, Pye, David, Castilho, Lilian, de Macedo, Mayra D., Constanzo, Jessica, Chevrier, Marie-Claire, Desjardins, Nathalie, Corgier, Benjamin, da Silva, Nelly, Mailloux, Agnès, Delaney, Meghan, Teramura, Gayle, Harris, Samantha, Heidl, Sarah, Denomme, Gregory A., Bensing, Kathleen, Doescher, Andrea, Drnovsek, Tadeja D., Lukan, Anja, Flegel, Willy A., Srivastava, Kshitij, Frank, Rainer, König, Sabrina, Gassner, Christoph, Meyer, Stefan, Trost, Nadine, Hyland, Catherine, Liew, Yew-Wah, Roots, Naomi, Johnsen, Jill, Nickerson, Debbie, Wheeler, Marsha, Keller, Margaret, Horn, Trina, Keller, Jessica, Crottet, Sofia Lejon, Henny, Christine, Modan, Shirley, Ochoa, Gorka, Hoffman, Roser, Hellberg, Åsa, Nertsberg, Lis, Olsson, Martin L., Vrignaud, Cédric, Peyrard, Thierry, St-Louis, Maryse, Lavoie, Josée, Laflamme, Geneviève, Tani, Yoshihiko, Tanaka, Mitsunobu, Trinkle, Anthony, Goe, Stephanie, Westhoff, Connie, Vege, Sunitha, Wittig, Michael, Franke, Andre, Wu, Ping Chun, Volkova, Evgeniya, Sippert, Emilia, Liu, Meihong, Mercado, Teresita, Illoh, Orieji, Liu, Zhugong, and Rios, Maria

Published
2019
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7. Severe neonatal thrombocytopenia due to anti‐HPA‐4b alloantibodies: Third report described in a Caucasian mother.

Author

Petermann, Rachel, Bianchi, Frédéric, Saib, Loubna, Ferré, Nicolas, Francelle, Nathalie, Oudin, Olivier, Chenet, Christophe, Mammasse, Yasmine, Jallu, Vincent, Chaussade, Amélie, Cornu, Antonin, Dubray, Laureline, and Mailloux, Agnès

Subjects
PLATELET count, THROMBOCYTOPENIA, MOTHERS, BLOOD platelet transfusion, PSYCHOLOGICAL distress, BLOOD platelet disorders
Abstract

Background: Fetal and Neonatal Alloimmune Thrombocytopenia (FNAIT) results from maternal platelet alloimmunization against paternal antigens inherited by the fetus, most often due to the Human Platelet Antigen (HPA)‐1 system in Caucasians. We investigated in 2023, a 30‐year‐old Caucasian woman Gravida 2 Para 1 who gave birth at 35 weeks of gestation to a male (body weight 2210 g) without signs of bleeding. A severe thrombocytopenia (platelet count at 3 G/L) was discovered incidentally a few hours after delivery in the context of the management of a respiratory distress. The newborn recovered after one platelet concentrate transfusion and normalized his platelet count at Day 5. Study Design and Methods: FNAIT investigation was performed according to guideline recommendations. Platelet genotyping was carried out by multiplex PCR. Maternal serological investigation included Monoclonal Antibody‐specific Immobilization of Platelet Antigens method (MAIPA) and Luminex technology. Results: Parental and newborn genotyping pointed out an HPA‐4 incompatibility between the mother and the newborn and the father. Serological investigation revealed an anti‐HPA‐4b alloantibody confirming the diagnosis of neonatal alloimmune thrombocytopenia. Conclusion: We described the third case of anti‐HPA‐4b alloantibody discovered in a Caucasian mother. This case strengthens the need for reference laboratory to genotype a panel of HPA alleles reflecting local genetic population diversity and for crossmatch of maternal serum with fresh paternal platelets in clinical suspected cases of neonatal alloimmune thrombocytopenia. [ABSTRACT FROM AUTHOR]

Published
2024
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10. P-114 Titrage anti-D (RH1) en gel sur automate IH-500 (Bio-Rad®): Détermination des seuils de risque d’anémie fœtale et de maladie hémolytique néonatale sévère à partir des résultats d’une cohorte de patientes immunisées suivies à la maternité TROUSSEAU

Author

Augier, Lance, primary, Toly-Ndour, Cécile, additional, Delaby, Hélène, additional, Huguet-Jacquot, Stéphanie, additional, Beaud, Jenny, additional, Babinet, Jérôme, additional, Maurice, Paul, additional, Guillemin, Marie-Gabrielle, additional, and Mailloux, Agnès, additional

Published
2023
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11. P-133 Immunisation anti-D(RH1) sévère chez une patiente possédant un allèle RHCE*CeRN associé à une délétion du gène RHD

Author

Babinet, Jérôme, primary, Floch, Aline, additional, Delaby, Hélène, additional, Da Silva, Nelly, additional, Tournamille, Christophe, additional, Huguet-Jacquot, Stéphanie, additional, Toly-Ndour, Cécile, additional, Beaud, Jenny, additional, Modot, Thomas, additional, Guillemin, Marie-Gabrielle, additional, Maurice, Paul, additional, and Mailloux, Agnès, additional

Published
2023
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14. CO5-3 Utilité de la prévention Rh systématique chez les patients présentant un antigène D partiel

Author

Toly-Ndour, Cécile, primary, Floch, Aline, additional, Huguet-Jacquot, Stéphanie, additional, Boussa-Khettab, Faiza, additional, Muralitharan, Vintuya, additional, Delaby, Hélène, additional, Beaud, Jenny, additional, Babinet, Jérôme, additional, Tournamille, Christophe, additional, Pirenne, France, additional, and Mailloux, Agnès, additional

Published
2023
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15. CO1-2 Alloimmunisation anti-CD36 au cours de la grossesse : Etude prospective d’une cohorte

Author

Jallu, Vincent, primary, Bianchi, Frédéric, additional, Chenet, Christophe, additional, Ferre, Nicolas, additional, Francelle, Nathalie, additional, Saib, Loubna, additional, Delaby, Hélène, additional, Huguet-Jacquot, Stéphanie, additional, Toly N'dour, Cécile, additional, Babinet, Jérôme, additional, Petermann, Rachel, additional, and Mailloux, Agnès, additional

Published
2023
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16. L24-1 Intérêt du génotypage plaquettaire fœtal

Author

Petermann, Rachel, primary, Chenet, Christophe, additional, Ferre, Nicolas, additional, Bianchi, Frédéric, additional, Oudin, Olivier, additional, Saib, Loubna, additional, Mammasse, Yasmine, additional, and Mailloux, Agnès, additional

Published
2023
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21. P-095 Transfusion en urgence d'un nouveau-né à 1 mois de vie en contexte d'incompatibilité foeto-maternelle KEL3 (Kpa) non diagnostiquée à la naissance

Author

Kimmel, Christine, primary, Babinet, Jérôme, additional, Piccione, Elodie, additional, Gicquel, Aurélie, additional, Toly-Ndour, Cécile, additional, Mailloux, Agnès, additional, Guillemin, Marie-Gabrielle, additional, Flamant, Cyril, additional, Winer, Norbert, additional, Boscher, Cécile, additional, and Callies, Arnaud, additional

Published
2023
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23. Feedback from Euromedlab 2023 for Seniors

Author

Baudin, Bruno, additional, Bigot, Édith, additional, Bœuf, Amandine, additional, Delatour, Vincent, additional, Giangrande, Chiara, additional, Gruson, Damien, additional, Grzych, Guillaume, additional, Le Goff, Caroline, additional, Mailloux, Agnès, additional, Peoc’h, Katell, additional, Piéroni, Laurence, additional, Sapin, Vincent, additional, Tabalani, Hana, additional, and Vaubourdolle, Michel, additional

Published
2023
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26. L-52 Résultats d’une enquête sur les cas de mauvaises prises en charge fœtale ou néonatale liés à un défaut de suivi immuno-hématologique de la grossesse

Author

Toly-Ndour, Cécile, primary, Petit, Hélène, additional, Oubouzar, Nadia, additional, Boennec, Marie-Luce, additional, Guinchard, Emmanuelle, additional, Kimmel, Christine, additional, Bouton, Muriel, additional, Floch, Aline, additional, Cortey, Anne, additional, and Mailloux, Agnès, additional

Published
2022
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28. Retours d'Euromedlab 2023 des Seniors.

Author

Baudin, Bruno, Bigot, Édith, Bœuf, Amandine, Delatour, Vincent, Giangrande, Chiara, Gruson, Damien, Grzych, Guillaume, Le Goff, Caroline, Mailloux, Agnès, Peoc'h, Katell, Piéroni, Laurence, Sapin, Vincent, Tabalani, Hana, and Vaubourdolle, Michel

Published
2023
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31. Prenatal management of fetal anemia due to pyruvate kinase deficiency: A case report.

Author

Maisonneuve, Emeline, Sohier Lepine, Marlène, Maurice, Paul, Pissard, Serge, Lafon, Bertrand, Mailloux, Agnès, Dhombres, Ferdinand, Leverger, Guy, and Jouannic, Jean‐Marie

Subjects
GLUCOSE-6-phosphate dehydrogenase deficiency, PYRUVATE kinase, RED blood cell transfusion, BONE marrow transplantation, HEMOLYTIC anemia, FETAL hemoglobin
Abstract

Background: Pyruvate Kinase (PK) deficiency is the most common enzyme defect of glycolysis, leading to congenital hemolytic anemia, which can occur during the neonatal period. Study Design and Methods: We report the prenatal management of fetal anemia related to PK deficiency in a family with a severe proband. Results: The couple had a first child born with hydrops, whose PK deficiency was diagnosed at 18 months of life. He was treated with allogeneic bone marrow transplantation. The second child was free from disease. For the third pregnancy, the amniocentesis revealed a PK deficiency. Weekly ultrasound monitoring of the middle cerebral artery velocity allowed the detection of severe fetal anemia. Two intrauterine red blood cell transfusions (IUTs) were performed, raising the fetal hemoglobin from 6.6 to 14.5 g/dl at 28 weeks' gestation and from 8.9 to 15.3 g/dl at 31 weeks. A hematopoietic stem cell allograft was discussed prenatally but not chosen, as it would not have significantly changed the perinatal prognosis. The patient delivered a 2730 g girl at 37 weeks, with hemoglobin of 13.6 g/dl. The child presented with neonatal jaundice treated with phototherapy and received postnatal transfusions. Discussion: When a proband is identified in a family, fetal investigation is warranted, to set up third‐trimester ultrasound surveillance and perinatal management. In case of fetal severe anemia of unknown etiology, the workup on fetal blood sampling before IUT should comprise the search for erythrocytes enzymopathies, such as PK deficiency. IUTs allow safer full‐term delivery in cases with PK deficiency. [ABSTRACT FROM AUTHOR]

Published
2023
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32. Perinatal risk factors associated with severity of haemolytic disease of the foetus and newborn due to Rhc maternal‐foetal incompatibility: A retrospective cohort study

Author

Franchinard, Loriane, primary, Maisonneuve, Emeline, additional, Friszer, Stéphanie, additional, Toly Ndour, Cécile, additional, Huguet‐Jacquot, Stéphanie, additional, Maurice, Paul, additional, Mailloux, Agnès, additional, Cortey, Anne, additional, and Jouannic, Jean‐Marie, additional

Published
2021
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37. Groupe de travail « allo-immunisation foeto-maternelle anti-érythrocytaire » : résultats de l’enquête sur les cas de mauvaises prises en charge fœtale ou néonatale liés à un défaut de suivi immuno-hématologique de la grossesse

Author

Toly-Ndour, Cécile, primary, Petit, Hélène, additional, Oubouzar, Nadia, additional, Boennec, Marie-Luce, additional, Guinchard, Emmanuelle, additional, Kimmel, Christine, additional, Bouton, Muriel, additional, Floch, Aline, additional, Cortey, Anne, additional, and Mailloux, Agnès, additional

Published
2021
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44. Multidisciplinary management of anti‐PP1Pk or anti‐P alloimmunization during pregnancy: A new case with anti‐P and a literature review

Author

Lépine, Marlène Sohier, primary, Goua, Valérie, additional, Debouverie, Odile Souchaud, additional, Giraud, Christine, additional, Rafat, Cédric, additional, Thonier, Vincent, additional, Masmouhi, Badrdine El, additional, Ndour, Cécile Toly, additional, Huguet‐Jacquot, Stéphanie, additional, Mailloux, Agnès, additional, Cortey, Anne, additional, Jouannic, Jean‐Marie, additional, and Maisonneuve, Emeline, additional

Published
2021
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45. Rh disease prevention: the European Perspective

Author

Toly‐Ndour, Cécile, primary, Huguet‐Jacquot, Stéphanie, additional, Mailloux, Agnès, additional, Delaby, Hélène, additional, Canellini, Giorgia, additional, Olsson, Martin L., additional, Wikman, Agneta, additional, Koelewijn, Joke M., additional, Minon, Jean‐Marc, additional, Legler, Tobias J., additional, Clausen, Frederik B., additional, Lambert, Mark, additional, Ryan, Helen, additional, Bricl, Irena, additional, Hasslund, Sys, additional, Orzinska, Agnieszka, additional, Guz, Katarzyna, additional, Uhrynowska, Malgorzata, additional, Matteocci, Antonella, additional, Nogues, Nuria, additional, Muniz‐Diaz, Eduardo, additional, Sainio, Susanna, additional, De Haas, Masja, additional, and Van der Schoot, C. Ellen, additional

Published
2021
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47. Perinatal risk factors associated with severity of haemolytic disease of the foetus and newborn due to Rhc maternal‐foetal incompatibility: A retrospective cohort study.

Author

Franchinard, Loriane, Maisonneuve, Emeline, Friszer, Stéphanie, Toly Ndour, Cécile, Huguet‐Jacquot, Stéphanie, Maurice, Paul, Mailloux, Agnès, Cortey, Anne, and Jouannic, Jean‐Marie

Subjects
ERYTHROBLASTOSIS fetalis, BLOOD transfusion reaction, COOMBS' test, COHORT analysis, AUTOIMMUNE hemolytic anemia, ERYTHROCYTES, BIVARIATE analysis
Abstract

Background and Objectives: Anti‐c is the third red blood cell antibody responsible for haemolytic disease of the foetus and newborn (HDFN) requiring intrauterine transfusion. We aimed to identify risk factors associated with HDFN and severe HDFN due to Rhc maternal‐foetal incompatibility. Materials and Methods: A retrospective cohort study was conducted in Paris and the surrounding area (France), between 2013 and 2015. We included mothers and their children managed by the National Reference Centre in Perinatal Hemobiology for alloimmunization and maternal‐foetal incompatibility for the Rhc antigen (N = 121). We conducted bivariate analyses to assess a relationship between perinatal factors (e.g., titre and concentration of anti‐c antibodies, direct antiglobulin test) and HDFN, its severity and duration. Results: The incidence of HDFN was 30% (n = 36), including 11% of severe HDFN (n = 13). Seven percent (n = 9) of neonates received at least one transfusion during the first week and 21% (n = 26) after this period until 3 weeks of life. During pregnancy, a concentration ≥7.5 IU/ml and a titre ≥4 and above were associated with HDFN and severe HDFN (p < 0.05). At birth, the high intensity of the quantitative direct antiglobulin test was associated with HDFN and severe HDFN (p < 0.05). A concentration ≥15 IU/ml is the best factor (area under curve [AUC] = 0.78) in predicting HDFN, followed by a titre ≥8 (AUC = 0.76). Conclusion: Anti‐c alloimmunization causes neonatal anaemia, which is often belated. Paediatricians have to be aware of these risk factors and organize prolonged monitoring of neonates. [ABSTRACT FROM AUTHOR]

Published
2022
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50. Managing the Unusual Causes of Fetal Anemia

Author

Maisonneuve, Emeline, primary, Ben M’Barek, Imane, additional, Leblanc, Thierry, additional, Da Costa, Lydie, additional, Friszer, Stéphanie, additional, Pernot, Françoise, additional, Thomas, Pauline, additional, Castaigne, Vanina, additional, Toly N’Dour, Cécile, additional, Mailloux, Agnès, additional, Cortey, Anne, additional, and Jouannic, Jean-Marie, additional

Published
2019
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