Publications by authors named "Magder L"

Background: Clinicians often start unnecessarily broad-spectrum empiric Gram-negative antibiotics out of the concern that delaying effective therapy could lead to a worse clinical outcome. This study examined the consequences of delayed initiation of broad-spectrum Gram-negative antibiotics.

Methods: In a retrospective cohort of adult inpatients from 928 US hospitals, we compared clinical outcomes after (1) empiric narrow-spectrum antibiotics escalated to broad-spectrum antibiotics (delayed broad-spectrum therapy, DBT) and (2) empiric broad-spectrum antibiotics continued for at least 5 days (early broad-spectrum therapy, EBT) using Win Ratios.

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Objective: Differences in cognitive outcomes for two home-based 16-week interventions after usual rehabilitative care post-hip fracture were examined.

Methods: Community Ambulation Project randomized controlled trial included 210 hip fracture participants. Interventions: Specific multi-component (PUSH) included strength-, balance-, function-, and endurance-based exercises; non-specific active control (PULSE) included seated range-of-motion exercises and sensory transcutaneous electrical neurostimulation.

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Article Synopsis
  • The study investigates how using vaginal lubricants during transvaginal ultrasound (TVUS) affects the vaginal microbiota, focusing on beneficial bacteria like Lactobacillus spp.
  • The researchers monitored 104 participants over 10 weeks, collecting vaginal swabs before, during, and after the use of lubricant to examine changes in microbiota composition.
  • Results showed no immediate changes in microbiota composition after one week, highlighting the need for further research on the long-term impact of lubricants on vaginal health.
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Objective: One key target of treating patients with systemic lupus erythematosus (SLE) is to prevent organ damage. This analysis quantified the association between time spent in four specific SLE low disease activity (LDA) states and organ damage rate.

Methods: This retrospective real-world data analysis (GSK Study 207168), undertaken to help contextualise the BLISS-BELIEVE clinical trial, included adults with SLE enrolled for≥1 year in the Hopkins Lupus Cohort and treated with standard therapy in a specialist care centre between 1987 and 2019.

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Background: Interstitial fibrosis in lupus nephritis (LN) is often infiltrated by immune cells but typically regarded as nonspecific "scar reaction." This study aimed to investigate the relationship between inflammatory fibrosis and kidney disease progression in LN.

Methods: Interstitial fibrosis and tubular atrophy (IFTA) were scored in 124 LN kidney biopsies.

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Article Synopsis
  • * Thirty-one participants underwent either PERT or VOL training, consisting of 80 lateral and some anterior/posterior step trials, and various outcome measures were assessed, including step initiation time and step length.
  • * Results showed that the PERT group initiated lateral steps faster with their non-paretic leg and improved overall stepping performance and balance more significantly than the VOL group, suggesting external perturbation training offers greater benefits for stroke recovery.
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Objective: To measure the association between patient race and physical restraint use in the ED.

Methods: Adult patients presenting to eight rural, suburban, and urban EDs in a mid-Atlantic statewide hospital system ED between January 1, 2019 and June 30, 2022 were included. Those arriving already restrained, transported from detention centers, or who left before services were provided were excluded.

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Objective: Assess healthcare workers' (HCW) attitudes toward universal masking, and gowns and gloves used as part of transmission-based precautions.

Design: Cross-sectional survey.

Setting: Academic, tertiary care medical center in Baltimore, Maryland.

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Impaired retinal blood flow (RBF) autoregulation plays a key role in the development and progression of several ocular diseases, including glaucoma and diabetic retinopathy. Clinically, reproducible RBF quantitation could significantly improve early diagnosis and disease management. Several non-invasive techniques have been developed but are limited for retinal microvasculature flow measurements due to their low signal-to-noise ratio and poor lateral resolution.

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Background: School-age children in sub-Saharan Africa suffer an underappreciated burden of malaria which threatens their health and education. To address this problem, we compared the efficacy of two school-based chemoprevention approaches: giving all students intermittent preventive treatment (IPT) or screening and treating only students with detected infections (IST).

Methods: In a three-arm, open-label, randomized, controlled trial (NCT05244954) in Malawi, 746 primary school students, aged 5-19 years, were individually randomized within each grade-level to IPT (n = 249), IST with a high-sensitivity rapid diagnostic test (hs-RDT, n = 248), or control (n = 249).

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Purpose: The purpose of this study was to determine the association between lens thickness and cataract in participants aged 0 to 5 years.

Design: This was a prospective, multicenter, case-control study.

Participants: We enrolled 118 participants (171 eyes) aged 0 to 5 years, mean age 14.

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Objective: We evaluated the association of 25-hydroxyvitamin D (25(OH)D) levels with adverse pregnancy outcomes in systemic lupus erythematosus (SLE).

Methods: The Hopkins Lupus Cohort includes visits of pregnant patients, including assessment of 25(OH)D levels at each visit. We examined the relationship between 25(OH)D levels and adverse pregnancy outcomes (miscarriage, preterm delivery, and small for gestational age).

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Article Synopsis
  • The study aimed to measure retinal capillary blood flow velocity and acceleration in nonhuman primates and humans using two imaging techniques: erythrocyte mediated angiography (EMA) and optical coherence tomography angiography (OCTA).
  • The research involved conducting scans on 2 NHPs and 11 humans, measuring the velocity of blood flow in different types of capillary networks and assessing the effects of elevated intraocular pressure (IOP) on this flow.
  • Results showed that while baseline capillary blood flow velocities were different between species, increasing IOP significantly reduced blood flow velocity in capillaries, indicating that IOP affects retinal blood dynamics.
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Objective: To characterize the effect of netarsudil 0.02% on episcleral blood flow in treatment-naive glaucoma suspect or ocular hypertension subjects.

Design: Prospective, unmasked, single-arm cohort study.

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Objective: To compare the impact of 2 common continuing medical education training modalities-independent online training (IND) and a Maintenance of Certification-4 (MOC) activity-on primary care professionals' (PCPs') thinking and practice behavior regarding the Safe Environment for Every Kid (SEEK) approach. This was part of an implementation science study scaling up the evidence-based practice, SEEK.

Methods: This is a longitudinal, multisite, mixed methods, cluster randomized controlled trial comparing 21 pediatric primary care practices across the United States randomized to 1 of 2 training modalities.

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Objective: Autoantibodies are a hallmark of lupus nephritis (LN), but their association with LN classes and treatment response are not adequately known. In this study, we quantified circulating autoantibodies in the Accelerating Medicines Partnership LN longitudinal cohort to identify serological biomarkers of LN histologic classification and treatment response and how these biomarkers change over time based on treatment response.

Methods: Peripheral blood samples were collected from 279 patients with systemic lupus erythematosus undergoing diagnostic kidney biopsy based on proteinuria.

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Background: Persistent inflammation is associated with adverse health outcomes, but its impact on mortality has not been investigated previously among hip fracture patients. This article aims to investigate the influence of changes in levels of cytokines in the 2 months after a hip fracture repair on 5-year mortality.

Methods: This is a prospective cohort study from the Baltimore Hip Studies (BHS) with 191 community-dwelling older men and women (≥65 years) who had recently undergone surgical repair of an acute hip fracture, with recruitment from May 2006 to June 2011.

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This prospective study evaluated the relationship between laser speckle contrast imaging (LSCI) ocular blood flow velocity (BFV) and five birth parameters: gestational age (GA), postmenstrual age (PMA) and chronological age (CA) at the time of measurement, birth weight (BW), and current weight (CW) in preterm neonates at risk for retinopathy of prematurity (ROP). 38 Neonates with BW < 2 kg, GA < 32 weeks, and PMA between 27 and 47 weeks underwent 91 LSCI sessions. Correlation tests and regression analysis were performed to quantify relationships between birth parameters and ocular BFV.

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Objective: Having a low complement level is associated with clinical systemic lupus erythematosus (SLE) disease activity and future organ damage. We studied the association of hydroxychloroquine (HCQ) whole blood levels with changes in complement level.

Methods: We performed two analyses on data prospectively collected from an SLE cohort.

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Unlabelled: Identifying long-term care facility (LTCF)-exposed inpatients is important for infection control research and practice, but ascertaining LTCF exposure is challenging. Across a large validation study, electronic health record data fields identified 76% of LTCF-exposed patients compared to manual chart review.

Objective: Residence or recent stay in a long-term care facility (LTCF) is an important risk factor for antibiotic-resistant bacterial colonization.

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This prospective study evaluated the relationship between laser speckle contrast imaging (LSCI) ocular blood flow velocity (BFV) and five birth parameters: gestational age (GA), postmenstrual age (PMA), and chronological age (CA) at the time of measurement, birth weight (BW), and current weight (CW) in preterm neonates at risk for retinopathy of prematurity (ROP).38 Neonates with BW < 2 kg, GA < 32 weeks, and PMA between 27-47 weeks underwent 91 LSCI sessions. Correlation tests and regression analysis were performed to quantify relationships between birth parameters and ocular BFV.

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Objectives: Perform a pilot study of online game-based learning (GBL) using natural frequencies and feedback to teach diagnostic reasoning.

Methods: We conducted a multicenter randomized-controlled trial of computer-based training. We enrolled medical students, residents, practicing physicians and nurse practitioners.

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Lupus nephritis (LN) is a pathologically heterogenous autoimmune disease linked to end-stage kidney disease and mortality. Better therapeutic strategies are needed as only 30%-40% of patients completely respond to treatment. Noninvasive biomarkers of intrarenal inflammation may guide more precise approaches.

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Background: The influence of anesthetic type on mental health after total hip arthroplasty (THA) is poorly understood. Adverse effects of general anesthesia (GA) on cognition following major non-cardiac surgery are well known, but mental health following THA is less well-studied. We hypothesized that neuraxial anesthesia (NA) would provide favorable mental health profiles compared with GA after THA.

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Objective: An important clinical question is whether the use of immunosuppressants or corticosteroids increases the risk of incident COVID-19 disease among patients with SLE. To address this question, we examined the incidence of COVID-19 infection in a large SLE cohort.

Methods: This study was based on a single-centre cohort of patients with SLE seen quarterly from March 2020 to August 2022.

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