Publications by authors named "Kristen T Leeman"

Background: Newborns with critical congenital heart disease (CCHD) require specialized delivery room management, but varying experience and knowledge can reduce confidence and impact care.

Methods: A pre-delivery, structured huddle checklist was introduced, addressing team roles, expected physiology, and management plans. PDSA cycles incorporated guidelines and simulation-based education to improve confidence in specialized resuscitation strategies.

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Objective: To estimate the association between the mode of respiratory support administered at 36 weeks' post-menstrual age (PMA) with time-to-liberation from respiratory support (LRS) in infants with grade 2/3 bronchopulmonary dysplasia (BPD).

Study Design: Daily respiratory support data were abstracted for infants born <32 weeks' gestation with grade 2/3 BPD enrolled in the Children's Hospitals Neonatal Database between 2017 and 2022. The main exposure was the mode of respiratory support received at 36 weeks' PMA: high flow nasal cannula >2 L/min (HFNC), continuous positive airway pressure (CPAP), non-invasive positive pressure ventilation (NIPPV), or mechanical ventilation (MV).

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Objectives: To assess respiratory care guidelines and explore variations in management of very low birth weight (VLBW) infants within a collaborative care framework. Additionally, to gather clinical leaders' perspectives on guidelines and preferences for ventilation modalities.

Study Design: Leaders from each NICU participated in a practice survey regarding the prevalence of unit clinical guidelines, and management, at many stages of care.

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Objective: To estimate the association of transpyloric feeding (TPF) with the composite outcome of tracheostomy or death for patients with severe bronchopulmonary dysplasia (sBPD).

Study Design: Retrospective multi-center cohort study of preterm infants <32 weeks with sBPD receiving enteral feedings. We compared infants who received TPF at 36, 44, or 50 weeks post-menstrual age to those who did not receive TPF at any of those timepoints.

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Objective: Our objective is to describe the implications, anticipated and perceived, by providers in a level-IV neonatal intensive care unit (NICU) with immediate patient access to inpatient notes and test results in the wake of the 21st Century Cures Act (CCA).

Study Design: Using a mixed-method approach in February 2021, a preimplementation survey of neonatologists, neonatal fellows, nurse practitioners, and neonatal nurses reported their perspectives on the new 21st CCA and how they anticipated that it would change their practices, and the experience of families in the NICU. In the follow-up to implementation, a postsurvey was completed by staff reporting their experiences in July 2021.

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Background: Inequity in neonatology may be potentiated within neonatal intensive care units (NICUs) by the effects of bias. Addressing bias can lead to improved, more equitable care. Understanding perceptions of bias can inform targeted interventions to reduce the impact of bias.

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Pathogenic variants in HPRT1 lead to deficiency in hypoxanthine-guanine phosphoribosyltransferase and are responsible for a spectrum of disorders. The severe phenotype is termed Lesch-Nyhan syndrome (LNS) and is inherited in an X-linked recessive manner. Most individuals with LNS have profound intellectual and physical disabilities throughout life including self-mutilating behaviors.

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Chronic pulmonary hypertension of infancy (cPHi) is a heterogeneous disease process that contributes to morbidity and mortality in preterm infants. cPHi is most commonly associated with chronic lung disease of prematurity and represents a unique phenotype of bronchopulmonary dysplasia. It is characterized by persistently elevated or newly rising pulmonary vascular resistance and pulmonary artery pressure beyond the first weeks of age.

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Background: Measurement of neonatal team resuscitation performance is critical to identify opportunities for improvement and to target education. An effective tool to measure team performance during infant resuscitations is lacking.

Methods: We developed an in-hospital infant resuscitation performance tool (Infa-RePT) using the modified Delphi method.

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Platelet transfusions are a common intervention for thrombocytopenia. Although the main reason for transfusing platelets is to improve hemostasis, platelets have many additional physiological roles, including interactions with immune pathways. Much of the evidence base for safe and effective transfusions has been informed by randomized trials in adult patients with hematological malignancies.

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Article Synopsis
  • The study investigated the prevalence of severe bronchopulmonary dysplasia (BPD) in infants, focusing on their ventilatory support types and settings.
  • A total of 187 infants were included, with 51% receiving invasive positive-pressure ventilation (IPPV) across 15 different medical centers.
  • Results showed significant variations in the types of ventilator modes used, depending on the specific center.
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Objective: Death certificates commonly contain errors, which hinders understanding of infant mortality. We, therefore, undertook a quality improvement (QI) initiative to improve death reporting in our neonatal intensive care unit (NICU).

Study Design: After our baseline assessment (January 1, 2015 to June 30, 2017), we implemented our QI initiatives using Plan, Do, Study, Act (PDSA) tests of change.

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Objective: Variation exists in neonatal platelet transfusion practices. Recent studies found potential harm in liberal platelet transfusion practices, supporting the use of lower transfusion thresholds. Our aim was to reduce non-indicated platelet transfusions through implementation of a restrictive platelet transfusion guideline.

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Neonatal-Perinatal Medicine (NPM) fellowship programs have undergone constant evolution since their first appearance in the 1960s. This article is the first in a seven-part series (Table 1) that critically evaluates the essentials of neonatology fellowship clinical and research education, performance assessment, and administrative support necessary to support NPM fellowship programs. This overview article will provide background on the history of NPM fellowship programs and provide a framework for the article series.

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The coronavirus disease 2019 (COVID-19) pandemic, resulting from infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has caused severe and widespread illness in adults, including pregnant women, while rarely infecting neonates. An incomplete understanding of disease pathogenesis and viral spread has resulted in evolving guidelines to reduce transmission from infected mothers to neonates. Fortunately, the risk of neonatal infection via perinatal/postnatal transmission is low when recommended precautions are followed.

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There is a growing appreciation of the role of lung stem/progenitor cells in the development and perpetuation of chronic lung disease including idiopathic pulmonary fibrosis. Human amniotic epithelial cells (hAECs) were previously shown to improve lung architecture in bleomycin-induced lung injury, with the further suggestion that hAECs obtained from term pregnancies possessed superior anti-fibrotic properties compared with their preterm counterparts. In the present study, we aimed to elucidate the differential effects of hAECs from term and preterm pregnancies on lung stem/progenitor cells involved in the repair.

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Background: Nucleated red blood cells (nRBCs) are associated with adverse outcomes for pediatric and adult intensive care patients.

Methods: The association between nRBC count and mortality was examined in an observational cohort of patients admitted to the neonatal intensive care unit from December 2015-December 2018.

Results: Among the 1059 patients with at least one nRBC count obtained, 45 infants (4.

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Introduction: To increase the rate of iron sufficiency among neonatal intensive care unit (NICU) patients from 16% to >35% within 12 months of implementing standardized assessment of reticulocyte hemoglobin (retHE).

Methods: We implemented a quality improvement (QI) study to improve iron sufficiency in our out-born level III/IV NICU. We screened 2,062 admissions, of which 622 were eligible based on feeding status at discharge.

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