The Briefing

Continuous newsroom coverage of clinically relevant evidence — newest first.

This week

24 stories
  1. Adenoviral Protein Reactivity Linked to Guillain-Barré Syndrome After COVID-19
    Brain ·Case-Control Study · May 18, 2026

    Adenoviral Protein Reactivity Linked to Guillain-Barré Syndrome After COVID-19

    Patients with post-infection or post-vaccination GBS show heightened antibody responses to adenoviruses, suggesting a shared trigger.

  2. Stereotactic Radiosurgery Improves Tumor Control, Overall Outcomes for Older VS Patients
    Journal of neurosurgery ·Cohort Study · May 18, 2026

    Stereotactic Radiosurgery Improves Tumor Control, Overall Outcomes for Older VS Patients

    A retrospective study indicates stereotactic radiosurgery significantly reduces vestibular schwannoma progression and improves neurological outcomes.

  3. Continuous EEG Enhances Detection of Post-Stroke Epilepsy Predictors
    Annals of Neurology ·Cohort Study · May 18, 2026

    Continuous EEG Enhances Detection of Post-Stroke Epilepsy Predictors

    A retrospective study shows continuous EEG significantly improves identification of epileptiform activity and prediction of post-stroke epilepsy.

  4. Cingulum Hippocampus White Matter Integrity Linked to Suicide Attempts in Bipolar Disorder
    Biological Psychiatry Cognitive Neuroscience and Neuroimaging ·Cohort Study · May 18, 2026

    Cingulum Hippocampus White Matter Integrity Linked to Suicide Attempts in Bipolar Disorder

    Reduced fractional anisotropy in the cingulum hippocampus, mediated by impulsivity, associates with suicide attempts in bipolar disorder.

  5. Nebulized Heparin Linked to Reduced Mortality, More Ventilation-Free Days in Respiratory Failure
    Critical Care Medicine ·Meta-Analysis · May 18, 2026

    Nebulized Heparin Linked to Reduced Mortality, More Ventilation-Free Days in Respiratory Failure

    A meta-analysis suggests nebulized unfractionated heparin improves survival and ventilation-free days in adults with acute respiratory failure…

  6. Accelerometer Data Predicts Dementia Risk in Older Adults
    JAMA Neurology ·Cohort Study · May 18, 2026

    Accelerometer Data Predicts Dementia Risk in Older Adults

    Objective sleep-wake cycle metrics from wearables modestly enhance dementia risk prediction, comparable to APOE genotype.

  7. Armchair Positioning Improves Oxygenation in Spontaneously Breathing ICU Patients
    Intensive care medicine ·Randomized Controlled Trial · May 18, 2026

    Armchair Positioning Improves Oxygenation in Spontaneously Breathing ICU Patients

    A randomized controlled trial found out-of-bed armchair positioning increased PaO2/FiO2 ratios compared to in-bed semi-recumbent positioning.

  8. CANMAT launches 2024 guideline for Major Depressive Disorder Management
    CANMAT ·Clinical Guideline · May 18, 2026

    CANMAT launches 2024 guideline for Major Depressive Disorder Management

    The updated CANMAT guideline extends recommended antidepressant maintenance duration and emphasizes earlier adjunctive strategies for limited.

  9. CANMAT launches 2024 guideline for Perinatal Mood, Anxiety, and Related Disorders
    CANMAT ·Clinical Guideline · May 18, 2026

    CANMAT launches 2024 guideline for Perinatal Mood, Anxiety, and Related Disorders

    The new CANMAT guideline emphasizes routine, systematic screening for perinatal mood and anxiety disorders throughout pregnancy and up to one year.

  10. ASAM launches Joint Clinical Practice Guideline on Benzodiazepine Tapering
    ASAM ·Clinical Guideline · May 18, 2026

    ASAM launches Joint Clinical Practice Guideline on Benzodiazepine Tapering

    This new guideline emphasizes patient-centered, gradual benzodiazepine tapering, with a strong caution against abrupt discontinuation due.

  11. LANCETP launches 2025 guideline for Algorithmic Treatment of Schizophrenia
    LANCETP ·Clinical Guideline · May 18, 2026

    LANCETP launches 2025 guideline for Algorithmic Treatment of Schizophrenia

    New international guidelines emphasize proactive metabolic health management from treatment initiation and earlier consideration of clozapine.

  12. AA and SNMMI launch 2025 guideline for Amyloid and Tau PET Appropriate Use Criteria
    AA/SNMMI ·Clinical Guideline · May 18, 2026

    AA and SNMMI launch 2025 guideline for Amyloid and Tau PET Appropriate Use Criteria

    New guidelines expand appropriate use of amyloid and tau PET, particularly for eligibility and monitoring of amyloid-targeting therapies.

  13. Alzheimer's Association launches 2024 guideline for Alzheimer's disease and related dementias
    AS ·Clinical Guideline · May 18, 2026

    Alzheimer's Association launches 2024 guideline for Alzheimer's disease and related dementias

    New guidance empowers primary care clinicians with a structured, patient-centered approach to diagnostic evaluation, testing, counseling.

  14. Syrinx Shunt Outcomes Vary by Type: Revision Risk vs. Early Neurological Benefit
    Journal of neurosurgery ·Cohort Study · May 18, 2026

    Syrinx Shunt Outcomes Vary by Type: Revision Risk vs. Early Neurological Benefit

    A retrospective study compares syringopleural, syringosubarachnoid, and syringoperitoneal shunts, detailing revision rates and neurological improvemen

  15. Heparin Dosing, ACT Monitoring Not Linked to Improved Outcomes After LEB
    Journal of Vascular Surgery ·Cohort Study · May 18, 2026

    Heparin Dosing, ACT Monitoring Not Linked to Improved Outcomes After LEB

    A large study suggests routine activated clotting time monitoring during lower extremity bypass may not improve patient outcomes.

  16. Endometriosis and Ovarian Cancer: Balancing Risk, Prevention, and Fertility
    Human Reproduction Update ·Narrative Review · May 18, 2026

    Endometriosis and Ovarian Cancer: Balancing Risk, Prevention, and Fertility

    A review clarifies the nuanced management of ovarian cancer risk in endometriosis, integrating molecular insights and treatment strategies.

  17. HFpEF Patients Exhibit Higher Respiratory Muscle Oxygen Cost During Submaximal Exercise
    CHEST Journal ·Cohort Study · May 18, 2026

    HFpEF Patients Exhibit Higher Respiratory Muscle Oxygen Cost During Submaximal Exercise

    A study reveals that individuals with heart failure with preserved ejection fraction expend significantly more oxygen for breathing during exertion.

  18. Pediatric Burn Length of Stay Lower Than Traditional Benchmarks
    Journal of Trauma: Injury, Infection, and Critical Care ·Cohort Study · May 18, 2026

    Pediatric Burn Length of Stay Lower Than Traditional Benchmarks

    A multi-institutional analysis of 1,543 pediatric burn patients updates expected hospital stay per TBSA, identifying key influencing factors.

  19. Global Efforts Advance Human Rights Protections for Older Adults' Mental Health
    World Psychiatry ·Narrative Review · May 18, 2026

    Global Efforts Advance Human Rights Protections for Older Adults' Mental Health

    International bodies and national initiatives are establishing frameworks to safeguard the dignity and mental well-being of the aging population.

  20. Tea Polyphenols Mitigate Brain Changes, Anxiety in Aged Diabetic Rats
    Brain Research ·Randomized Controlled Trial · May 18, 2026

    Tea Polyphenols Mitigate Brain Changes, Anxiety in Aged Diabetic Rats

    A preclinical study in aged T2DM rats suggests tea polyphenol intervention may improve hippocampal structure, function, and behavior.

  21. PSMD1 Inhibition via LNPs Reduces Myeloma Growth, Overcomes Resistance
    Blood ·In Vitro Study · May 18, 2026

    PSMD1 Inhibition via LNPs Reduces Myeloma Growth, Overcomes Resistance

    Targeting the proteasome subunit PSMD1 with siRNA delivered by lipid nanoparticles shows efficacy in multiple myeloma models.

  22. Diffuse White Matter Abnormalities Do Not Predict Long-Term Dementia Risk
    Neurology ·Cohort Study · May 18, 2026

    Diffuse White Matter Abnormalities Do Not Predict Long-Term Dementia Risk

    A 10-year study finds that 'dirty-appearing' white matter lacks the prognostic weight of focal hyperintensities in older adults.

  23. Lamotrigine-Topiramate Duotherapy Increases Congenital Malformation Risk Fourfold
    Neurology ·Cohort Study · May 18, 2026

    Lamotrigine-Topiramate Duotherapy Increases Congenital Malformation Risk Fourfold

    A large registry study identifies a significant risk increase for specific antiseizure drug combinations used during the first trimester.

  24. Biallelic EIPR1 Variants Cause Neurodevelopmental Syndrome and Neutropenia
    Brain ·Preclinical Study · May 18, 2026

    Biallelic EIPR1 Variants Cause Neurodevelopmental Syndrome and Neutropenia

    Defects in endosomal recycling and dense core vesicle biogenesis drive a spectrum of microcephaly, ataxia, and spasticity.