Publications by authors named "Jonathan Troost"

Aims: This study aims to improve the interpretability and clinical utility of the COmprehensive Score for financial Toxicity-Functional Assessment of Chronic Illness Therapy (COST-FACIT) by identifying distinct financial toxicity classes in adults with diabetes.

Methods: Data included a sample of 600 adults with Type 1 or Type 2 diabetes and high A1c. Latent Class Analysis was used to identify subgroups of patients based on COST-FACIT score patterns.

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  • Temporomandibular joint (TMJ) advanced arthroscopic debridement is a minimally invasive surgical procedure debated for its effectiveness in treating intra-articular pain and dysfunction associated with advanced TMJ degenerative disease.
  • The study aimed to assess if this procedure improves patients' pain and quality of life while identifying factors influencing these outcomes.
  • Conducted at the University of Michigan, the study analyzed 240 subjects over a minimum of three months, focusing on various preoperative and operative variables in relation to quality of life and pain reduction scores.
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  • Systemic immune system abnormalities may play a role in rosacea development, with studies indicating a higher presence of abnormal bacteria and small intestinal bacterial overgrowth (SIBO) in affected individuals, though inconsistent testing has led to discrepancies in findings.* -
  • This study aimed to accurately assess the prevalence of abnormal bacteria and SIBO in individuals with rosacea while controlling for potential confounding factors, excluding those with gastrointestinal diseases or significant health issues.* -
  • Findings showed that 14.8% tested positive for abnormal bacteria and 33.3% for SIBO, with a notably higher SIBO rate in the rosacea cohort compared to the general population, suggesting a possible link between SIBO and ros
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Background: The management of type 2 diabetes mellitus (T2DM) includes mastery of complex care activities, self-management skills, and routine health care encounters to optimize glucose control and achieve good health. Given the lifelong course of T2DM, patients are faced with navigating complex medical and disease-specific information. This health-seeking behavior is a driver of health disparities and is associated with hospitalization and readmission.

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  • - The study evaluated a tailored research training course for community health workers and promotoras (CHW/Ps) to improve their skills and knowledge in research roles, with both virtual and in-person options available.
  • - A total of 394 CHW/Ps participated, with over 95% reporting improved abilities and high relevance of the course to their work, despite small differences in training experiences across locations.
  • - The training was generally well-received, highlighting the importance of facilitators with community experience, and suggests a scalable model for enhancing the CHW/P workforce's research capabilities.
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Key Points: Using transcriptome-wide association studies, we identified an association between splicing out of exon 27 of COL4A4 and hematuria. We confirmed the presence of COL4A4 exon 27 splicing in an independent cohort. Functional assays revealed that the COL4A4 transcript with exon 27 spliced out affects collagen IV trimer assembly and secretion.

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  • The study investigates how residential air pollution, specifically particulate matter (PM), black carbon (BC), and sulfate, affects the progression of kidney disease in patients with primary glomerulopathies over a duration of at least two years.
  • Participants from two cohorts were analyzed to determine the link between air pollution exposure and decline in kidney function, measured by estimated glomerular filtration rate (eGFR).
  • Results indicate that higher exposure to air pollutants correlates with faster disease progression and increased systemic inflammation markers, suggesting air quality may significantly impact kidney health.
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  • Patients with primary glomerular disease have specific management needs, leading to the development of a user-centered eHealth tool designed to assist in their disease management.* -
  • A survey of 66 patients and 25 nephrologists revealed that while patients perform fewer management tasks and recognize fewer informational needs, they are more knowledgeable about eHealth tools compared to nephrologists.* -
  • Key design elements for the UrApp System include customizable features, trustworthy resource integration, and efficient data tracking, ultimately focusing on personalized patient education and communication with healthcare providers.*
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Introduction: Patients with neurogenic lower urinary tract dysfunction (NGLUTD) who require catheterization either with clean intermittent catheters (CIC) or indwelling catheters suffer with frequent urinary tract infections (UTIs). This study assessed the efficacy, patient persistence, satisfaction, and the impact on quality of life (QoL) of gentamicin nightly bladder instillations with 15 mg.

Methods: This is a prospective survey of 36 patients with NGLUTD and recurrent UTIs prescribed long-term gentamicin to prevent UTIs.

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Key Points: Preterm birth was a risk factor for adverse outcomes in this heterogeneous cohort of children and adults with glomerular disease. In analyses adjusted for diagnosis and apolipoprotein L1 risk status, there was less remission and faster progression of kidney disease in those born preterm. A novel finding from this study is that adults born preterm were more likely to have an apolipoprotein L1 high-risk genotype.

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Background: Oral immunotherapy (OIT) is a promising treatment for food allergy. Prior studies demonstrate significant differences among food-allergic individuals across race, ethnicity, and socioeconomic groups. Disparities in OIT have not been evaluated.

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This review article discusses the role of MR imaging-based biomarkers in understanding and managing hemorrhagic strokes, focusing on intracerebral hemorrhage (ICH) and aneurysmal subarachnoid hemorrhage. ICH is a severe type of stroke with high mortality and morbidity rates, primarily caused by the rupture of small blood vessels in the brain, resulting in hematoma formation. MR imaging-based biomarkers, including brain iron quantification, ultra-early erythrolysis detection, and diffusion tensor imaging, offer valuable insights for hemorrhagic stroke management.

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Background: Patellofemoral instability commonly occurs during sports activities. The return to sports (RTS) rate for pediatric patients after bilateral medial patellofemoral ligament reconstruction (MPFLR) is unknown.

Purpose/hypothesis: The purpose of this study was to evaluate RTS outcomes for pediatric patients undergoing bilateral MPFLR.

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  • The study explored how baseline sleep and circadian rhythms relate to future alcohol use in healthy adults, focusing on individuals aged 21-42 years.
  • Self-reported insomnia and longer sleep duration at baseline were significant predictors of increased alcohol consumption, including weekly drinks and binge episodes, over the following year.
  • The findings indicate that insomnia symptoms may be a crucial target for interventions to reduce the risk of alcohol misuse, even more so than circadian factors.
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Background: Iron deficiency (ID) is a common extrapulmonary manifestation in cystic fibrosis (CF). CF transmembrane conductance regulator (CFTR) modulator therapies, particularly highly-effective modulator therapy (HEMT), have drastically improved health status in a majority of people with CF. We hypothesize that CFTR modulator use is associated with improved markers of ID.

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Rationale & Objective: Glomerular disorders have a highly variable clinical course, and biomarkers that reflect the molecular mechanisms underlying their progression are needed. Based on our previous work identifying plasminogen as a direct cause of podocyte injury, we designed this study to test the association between urine plasmin(ogen) (ie, plasmin and its precursor plasminogen) and end-stage kidney disease (ESKD).

Study Design: Multicenter cohort study.

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Purpose: Radiologists with diverse training, specialization, and habits interpret imaging in the Emergency Department. It is necessary to understand if their variation predicts differential value. The purpose of this study was to determine whether attending radiologist variation predicts major clinical outcomes in adult Emergency Department patients imaged with ultrasound for right upper quadrant pain.

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  • The study aimed to address diagnostic errors in respiratory cultures for ventilator-associated pneumonia (VAP) through a new diagnostic stewardship intervention (VAP-DSI) in intensive care units.
  • Researchers implemented various strategies, including strict access to respiratory cultures and using specific methods for sample collection, and compared outcomes between patients after the intervention and a control group prior to it.
  • Results showed that the VAP-DSI was safe and effectively reduced both the rate of positive cultures and the use of broad-spectrum antibiotics, suggesting it could improve antimicrobial stewardship in ICUs.
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  • - Mask use is recommended to reduce COVID-19 transmission, but its effects on oxygen levels in people with asthma are unclear; this study aimed to investigate that.
  • - The research included two parts: measuring resting oxygen levels in adults and children with/without asthma while wearing masks, and evaluating oxygen levels and perceived breathlessness in children during a 6-minute walk test with masks.
  • - The results showed no significant difference in oxygen saturation or breathlessness between individuals with and without asthma, indicating that mask use does not negatively impact oxygen levels during rest or light exercise.
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  • * The primary goal is to evaluate how effective a JITAI-based app is at reducing caregiver strain, anxiety, and depression, while also examining factors that might influence its effectiveness, such as caregiver group and health-related quality of life.
  • * Preliminary findings suggest a positive relationship between the frequency of app notifications and improvements in caregivers' mental health, but further investigation is needed to fully understand its impact across different caregiver populations.
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Purpose: Penicillins are a potent antibiotic in managing odontogenic infections, but 10% of the population is labelled as allergic to these drugs. This has limited their use and resulted in increased utilization of health care resources as well as complications associated with alternative antibiotics. The purpose of the study was to measure the association between patients labeled as penicillin allergic and treatment outcomes in a sample of patients treated for complicated odontogenic infections.

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BACKGROUNDFood allergy (FA) is a growing health problem requiring physiologic confirmation via the oral food challenge (OFC). Many OFCs result in clinical anaphylaxis, causing discomfort and risk while limiting OFC utility. Transepidermal water loss (TEWL) measurement provides a potential solution to detect food anaphylaxis in real time prior to clinical symptoms.

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Purpose: Establishing the psychometric reliability and validity of new measures is an ongoing process. More work is needed in to confirm the clinical utility of the TBI-CareQOL measurement development system in both an independent cohort of caregivers of traumatic brain injury (TBI), as well as in additional caregiver groups.

Methods: An independent cohort of caregivers of people with TBI (n = 139), as well as three new diverse caregiver cohorts (n = 19 caregivers of persons with spinal cord injury, n = 21 caregivers for persons with Huntington disease, and n = 30 caregivers for persons with cancer), completed 11 TBI-CareQOL measures (caregiver strain; caregiver-specific anxiety; anxiety; depression; anger; self-efficacy; positive affect and well-being; perceived stress; satisfaction with social roles and activities; fatigue; sleep-related impairment), as well as two additional measures to examine convergent and discriminant validity (PROMIS Global Health; the Caregiver Appraisal Scale).

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  • - The study investigates the effectiveness of unenhanced abdominopelvic CT scans in diagnosing acute abdominal pain, using contrast-enhanced CT as a comparison for accuracy.
  • - Conducted on 201 adult emergency department patients, it involved multiple radiologists interpreting the scans to ensure reliable results, focusing on primary and actionable secondary diagnoses.
  • - Findings showed that unenhanced CT had an overall diagnostic accuracy of 70%, with faculty radiologists performing better (82%) than residents (76%) when identifying main causes of pain.
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Our aim was to examine how code status orders for patients hospitalized with COVID-19 changed over time as the pandemic progressed and outcomes improved. This retrospective cohort study was performed at a single academic center in the United States. Adults admitted between March 1, 2020, and December 31, 2021, who tested positive for COVID-19, were included.

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