Publications by authors named "Bryan A Comstock"

Article Synopsis
  • The study aims to predict the likelihood of death or severe neurodevelopmental impairment (NDI) in neonates with hypoxic-ischemic encephalopathy (HIE) who undergo hypothermia treatment.
  • The research involved 424 neonates from U.S. neonatal intensive care units, tracking their outcomes up to the age of 2 years, with a focus on clinical indicators taken 24 hours after birth.
  • Findings revealed that specific clinical characteristics, including severely abnormal EEG, low pH, and a poor Apgar score, can effectively signal high risk for severe outcomes, offering a high level of specificity and predictive value for clinicians.
View Article and Find Full Text PDF

Objective: To assess the relationship between the Sarnat exam, early electroencephalogram (EEG) background, and death or neurodevelopmental impairment (NDI) at age 2 years among neonates with moderate to severe hypoxic-ischemic encephalopathy treated with therapeutic hypothermia.

Study Design: Neonates enrolled in the High-dose Erythropoietin for Asphyxia and Encephalopathy trial with EEG (n = 463) or amplitude-integrated electroencephalogram (n = 15) reports available on the first day after birth were included in this cohort study. A Sarnat exam was performed between 1 and 6 hours after birth, and neonates were classified into 3 groups of increasing severity based on the number of severe features (none, 1-2, or 3+).

View Article and Find Full Text PDF

Background: The High-Dose Erythropoietin for Asphyxia and Encephalopathy (HEAL) trial for neonates with hypoxic-ischemic encephalopathy (HIE) treated with therapeutic hypothermia demonstrated no neurodevelopmental benefit but was associated with a higher rate of serious adverse events (SAEs). Understanding if targeted Epo plasma exposures were achieved in the HEAL trial and if SAEs were associated with higher exposures would help future therapeutic programs of Epo as a candidate neuroprotective treatment.

Methods: Ancillary study of a subset of HEAL neonates who received Epo (1000 U/kg IV on days 1, 2, 3, 4, and 7) and had plasma drug concentrations measured.

View Article and Find Full Text PDF
Article Synopsis
  • The study focused on enhancing patient enrollment in the CISTO bladder cancer trial by identifying effective operational tools and strategies.
  • The main strategy, CISTOquestion, an email system for addressing patient eligibility inquiries, significantly increased average patient screenings and enrollments at study sites after its implementation.
  • Survey responses indicated that CISTOquestion was perceived as a valuable resource, particularly in sites with higher exclusion rates, highlighting its role in improving trial participation.
View Article and Find Full Text PDF

Background And Purpose: We aimed to evaluate GPT-4's ability to write radiology editorials and to compare these with human-written counterparts, thereby determining their real-world applicability for scientific writing.

Materials And Methods: Sixteen editorials from eight journals were included. To generate the AI-written editorials, the summary of 16 human-written editorials was fed into GPT-4.

View Article and Find Full Text PDF
Article Synopsis
  • Infants with hypoxic ischemic encephalopathy (HIE) may have underlying genetic or congenital anomalies, which could influence their health outcomes, but the extent of this impact is not well understood.
  • In a study of 500 infants with HIE, 5% were found to have genetic or congenital anomalies; these infants showed higher rates of death or neurodevelopmental impairment (NDI) compared to those without anomalies.
  • Despite similar severity of HIE, infants with genetic or congenital issues had worse neurological outcomes, including higher instances of cerebral palsy and lower developmental scores at age two.
View Article and Find Full Text PDF

Objective: To assess among a cohort of neonates with hypoxic-ischemic encephalopathy (HIE) the association of pretreatment maximal hourly seizure burden and total seizure duration with successful response to initial antiseizure medication (ASM).

Study Design: This was a retrospective review of data collected from infants enrolled in the HEAL Trial (NCT02811263) between January 25, 2017, and October 9, 2019. We evaluated a cohort of neonates born at ≥36 weeks of gestation with moderate-to-severe HIE who underwent continuous electroencephalogram monitoring and had acute symptomatic seizures.

View Article and Find Full Text PDF

Objective: Determine association between time to regain birthweight and 2-year neurodevelopment among extremely preterm (EP) newborns.

Study Design: Secondary analysis of the Preterm Erythropoietin Neuroprotection Trial evaluating time to regain birthweight, time from birth to weight nadir, time from nadir to regain birthweight, and cumulative weight loss with 2-year corrected Bayley Scales of Infant and Toddler Development 3rd edition.

Results: Among n = 654 EP neonates, those with shorter nadir-to-regain had lower cognitive scores (≤1 day versus ≥8 days: -5.

View Article and Find Full Text PDF

Background: Associations of 2-year neurodevelopmental and behavioral outcomes with growth trajectories of preterm infants are unknown.

Methods: This secondary analysis of a preterm cohort examined in-hospital and discharge to 2-year changes in anthropometric z-scores. Two-year follow-up included Bayley Scales of Infant Development (BSID-III) and Child Behavior Checklist.

View Article and Find Full Text PDF

Background: Academic and community urology centers participating in a pragmatic clinical trial in non-muscle-invasive bladder cancer completed monthly surveys assessing restrictions in aspects of bladder cancer care due to the COVID-19 Public Health Emergency. Our objective was to describe pandemic-related restrictions on bladder cancer care.

Methods: We invited 32 sites participating in a multicenter pragmatic bladder cancer trial to complete monthly surveys distributed through REDCap beginning in May 2020.

View Article and Find Full Text PDF

Objective: To study the association between the Sarnat exam (SE) performed before and after therapeutic hypothermia (TH) and outcomes at 2 years in infants with moderate or severe hypoxic-ischaemic encephalopathy (HIE).

Design: Secondary analysis of the igh-dose rythropoietin for sphyxia and Encephaopathy Trial. Adjusted ORs (aORs) for death or neurodevelopmental impairment (NDI) based on SE severity category and change in category were constructed, adjusting for sedation at time of exam.

View Article and Find Full Text PDF
Article Synopsis
  • The study aimed to investigate whether the time it takes for infants with hypoxic-ischemic encephalopathy (HIE) to reach a target temperature affects their risk of death or neurodevelopmental impairment (NDI) by the age of 2.
  • It involved 500 infants treated with therapeutic hypothermia, categorizing them into early (≤4 hours) and late (>4 hours) target temperature groups, but results showed no significant differences in mortality or NDI between the two groups.
  • Ultimately, the findings suggest that the timing of reaching target temperature does not independently impact outcomes, as both groups had similar neurodevelopmental scores among survivors.
View Article and Find Full Text PDF

Background: Bladder cancer poses a significant public health burden, with high recurrence and progression rates in patients with non-muscle-invasive bladder cancer (NMIBC). Current treatment options include bladder-sparing therapies (BST) and radical cystectomy, both with associated risks and benefits. However, evidence supporting optimal management decisions for patients with recurrent high-grade NMIBC remains limited, leading to uncertainty for patients and clinicians.

View Article and Find Full Text PDF

Introduction: Erythropoietin (Epo) is a putative neuroprotective therapy that did not improve overall outcomes in a phase 3 randomized controlled trial for neonates with moderate or severe hypoxic-ischemic encephalopathy (HIE). However, HIE is a heterogeneous disorder, and it remains to be determined whether Epo had beneficial effects on a subset of perinatal brain injuries.

Methods: This study was a secondary analysis of neuroimaging data from the High-dose Erythropoietin for Asphyxia and Encephalopathy (HEAL) Trial, which was conducted from 2016 to 2021 at 17 sites involving 23 US academic medical centers.

View Article and Find Full Text PDF

Background And Objectives: Predicting neurodevelopmental outcome for neonates with hypoxic-ischemic encephalopathy (HIE) is important for clinical decision-making, care planning, and parent communication. We examined the relationship between EEG background and neurodevelopmental outcome among children enrolled in a trial of erythropoietin or placebo for neonates with HIE treated with therapeutic hypothermia.

Methods: Participants had EEG recorded throughout hypothermia.

View Article and Find Full Text PDF
Article Synopsis
  • - The study aimed to explore how placental abnormalities affect the neurodevelopmental outcomes in newborns with hypoxic-ischemic encephalopathy (HIE) who received therapeutic hypothermia, hypothesizing that acute placental issues would lower risks of death or developmental impairments by age 2.
  • - Out of 500 newborns with severe HIE, 321 had their placental pathology examined, revealing various types of abnormalities; however, the risk of negative outcomes between those with and without acute placental issues did not show a significant difference.
  • - The conclusion indicates that while placental abnormalities did not show a clear link to death or neurodevelopmental impairment in HIE cases, the potential connection between multiple chronic
View Article and Find Full Text PDF

Background Multiple qualitative scoring systems have been created to capture the imaging severity of hypoxic ischemic brain injury. Purpose To evaluate quantitative volumes of acute brain injury at MRI in neonates with hypoxic ischemic brain injury and correlate these findings with 24-month neurodevelopmental outcomes and qualitative brain injury scoring by radiologists. Materials and Methods In this secondary analysis, brain diffusion-weighted MRI data from neonates in the High-dose Erythropoietin for Asphyxia and Encephalopathy trial, which recruited participants between January 2017 and October 2019, were analyzed.

View Article and Find Full Text PDF
Article Synopsis
  • This study explored the link between blood glucose levels in the first 12 hours after birth and outcomes in infants with hypoxic-ischemic encephalopathy (HIE) undergoing therapeutic hypothermia.
  • Researchers analyzed data from 491 neonates, categorizing their blood glucose levels into hyperglycemia, euglycemia, and hypoglycemia, and examined the association with death or neurodevelopmental impairment (NDI) at 22 to 36 months.
  • Findings showed that euglycemia was more common in moderate HIE, while severe HIE had higher rates of hyperglycemia; both hypo- and hyperglycemia were linked to increased risks of death and NDI compared to euglycemic infants
View Article and Find Full Text PDF

Importance: The ability to predict neurodevelopmental impairment (NDI) for infants diagnosed with hypoxic ischemic encephalopathy (HIE) is important for parental guidance and clinical treatment as well as for stratification of patients for future neurotherapeutic studies.

Objectives: To examine the effect of erythropoietin on plasma inflammatory mediators in infants with moderate or severe HIE and to develop a panel of circulating biomarkers that improves the projection of 2-year NDI over and above the clinical data available at the time of birth.

Design, Setting, And Participants: This study is a preplanned secondary analysis of prospectively collected data from infants enrolled in the High-Dose Erythropoietin for Asphyxia and Encephalopathy (HEAL) Trial, which tested the efficacy of erythropoietin as an adjunctive neuroprotective therapy to therapeutic hypothermia.

View Article and Find Full Text PDF

Importance: Spanish-speaking participants are underrepresented in clinical trials, limiting study generalizability and contributing to ongoing health inequity. The Comparison of Outcomes of Antibiotic Drugs and Appendectomy (CODA) trial intentionally included Spanish-speaking participants.

Objective: To describe trial participation and compare clinical and patient-reported outcomes among Spanish-speaking and English-speaking participants with acute appendicitis randomized to antibiotics.

View Article and Find Full Text PDF

Infections remain a leading cause of neonatal death, especially among the extremely preterm infants. To evaluate the incidence, pathogenesis, and in-hospital outcomes associated with sepsis among hospitalized extremely preterm infants born at 24-0/7 to 27-6/7 weeks of gestation, we designed a post hoc analysis of data collected prospectively during the Preterm Epo Neuroprotection (PENUT) Trial, NCT #01378273. We analyzed culture positive infection data, as well as type and duration of antibiotic course and described their association with in-hospital morbidities and mortality.

View Article and Find Full Text PDF

Objective: To assess whether high dose erythropoietin (Epo) treatment of cooled infants with neonatal hypoxic ischemic encephalopathy results in a higher risk of prespecified serious adverse events (SAEs).

Study Design: Five hundred infants born at ≥36 weeks of gestation with moderate or severe hypoxic ischemic encephalopathy undergoing therapeutic hypothermia were randomized to Epo or placebo on days 1, 2, 3, 4, and 7. Pretreatment and posttreatment SAEs were compared with adjusted generalized linear models, with posttreatment models adjusted for the presence of a pretreatment SAE.

View Article and Find Full Text PDF

Background: In newborns with hypoxic-ischemic encephalopathy (HIE), the correlation between neonatal neuroimaging and the degree of neurodevelopmental impairment (NDI) is unclear.

Methods: Infants with HIE enrolled in a randomized controlled trial underwent neonatal MRI/MR spectroscopy (MRS) using a harmonized protocol at 4-6 days of age. The severity of brain injury was measured with a validated scoring system.

View Article and Find Full Text PDF

Background: Infants born extremely preterm (<28 weeks' gestation) are at high risk of neurodevelopmental impairment (NDI) with 50% of survivors showing moderate or severe NDI when at 2 years of age. We sought to develop novel models by which to predict neurodevelopmental outcomes, hypothesizing that combining baseline characteristics at birth with medical care and environmental exposures would produce the most accurate model.

Methods: Using a prospective database of 692 infants from the Preterm Epo Neuroprotection (PENUT) Trial, which was carried out between December 2013 and September 2016, we developed three predictive algorithms of increasing complexity using a Bayesian Additive Regression Trees (BART) machine learning approach to predict both NDI and continuous Bayley Scales of Infant and Toddler Development 3rd ed subscales at 2 year follow-up using: 1) the 5 variables used in the National Institute of Child Health and Human Development (NICHD) Extremely Preterm Birth Outcomes Tool, 2) 21 variables associated with outcomes in extremely preterm (EP) infants, and 3) a hypothesis-free approach using 133 potential variables available for infants in the PENUT database.

View Article and Find Full Text PDF

Background: An ancillary study of the High-Dose Erythropoietin for Asphyxia and Encephalopathy (HEAL) trial for neonates with hypoxic-ischemic encephalopathy (HIE) and treated with therapeutic hypothermia examined the hypothesis that neonates randomized to receive erythropoietin (Epo) would have a lower seizure risk and burden compared with neonates who received placebo.

Methods: Electroencephalograms (EEGs) from 7/17 HEAL trial centers were reviewed. Seizure presence was compared across treatment groups using a logistic regression model adjusting for treatment, HIE severity, center, and seizure burden prior to the first dose.

View Article and Find Full Text PDF