Heterogeneity and plasticity of the naïve CD4+ T cell compartment.

While naïve CD4+ T cells have historically been considered a homogenous population, recent studies have provided evidence that functional heterogeneity exists within this population. Using single cell RNA sequencing (scRNAseq), we identify five transcriptionally distinct naïve CD4+ T cell subsets that emerge within the single positive stage in the thymus: a quiescence cluster (TQ), a memory-like cluster (TMEM), a TCR reactive cluster (TTCR), an IFN responsive cluster (TIFN), and an undifferentiated cluster (TUND). Elevated expression of transcription factors KLF2, Mx1, and Nur77 within the TQ, TIFN, and TMEM clusters, respectively, allowed enrichment of these subsets for further analyses.

Practice patterns for acquiring neuroimaging after pediatric in-hospital cardiac arrest.

Aims: To determine which patient and cardiac arrest factors were associated with obtaining neuroimaging after in-hospital cardiac arrest, and among those patients who had neuroimaging, factors associated with which neuroimaging modality was obtained.

Methods: Retrospective cohort study of patients who survived in-hospital cardiac arrest (IHCA) and were enrolled in the ICU-RESUS trial (NCT02837497).

Results: We tabulated ultrasound (US), CT, and MRI frequency within 7 days following IHCA and identified patient and cardiac arrest factors associated with neuroimaging modalities utilized.

Clinical Swallow Examination Following Laryngectomy: An International e-Delphi Consensus Process.

Clinical swallow examination (CSE) following laryngectomy (± pharyngeal resection) remains a critical step in dysphagia evaluation. Whilst the core components of a standard CSE service a broad spectrum of patient populations, no evidence exists examining the essential assessment items specific to CSE in the laryngectomy population. The aim of this study was to identify the tasks, measures and observations considered necessary to include in a CSE post laryngectomy.

Challenges and strengths experienced by fetal alcohol spectrum disorder diagnostic clinics in Canada.

Background: The Canadian fetal alcohol spectrum disorder (FASD) diagnostic guideline provides clinicians with the process and procedure to reach an accurate diagnosis. However, organisational structure, culture, and resource utilisation vary. The objectives of this study were to identify the key challenges and strengths of successful FASD diagnostic clinics.