Publications by authors named "Yager P"

Article Synopsis
  • Tongue swab (TS) sampling combined with quantitative PCR (qPCR) shows promise as an alternative to sputum testing for tuberculosis (TB) diagnosis, although previous studies indicated lower sensitivity.
  • Two strategies were evaluated to enhance sensitivity: one involved centrifugation to concentrate MTB DNA, achieving 83% sensitivity and 100% specificity, while the other utilized sequence-specific magnetic capture, resulting in 90% sensitivity and 97% specificity.
  • These findings suggest that with further development, these methods could lead to more accessible and effective TB testing options.
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Reliable, validated diagnostic tests are critical for rabies control in animals and prevention in people. We present a performance assessment and updates to the LN34 real-time RT-PCR assay for rabies diagnosis in postmortem animal brain samples. In two U.

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Background: Annually, about 4000 US children undergo a tracheostomy procedure to provide a functional, safe airway. In the hospital, qualified staff monitor and address problems, but post-discharge this responsibility shifts entirely to caregivers. The stress and constant demands of caregiving for a child with a tracheostomy with or without ventilator negatively affect caregivers.

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Tongue swabs hold promise as a non-invasive sample for diagnosing tuberculosis (TB). However, their utility as replacements for sputum has been limited by their varied diagnostic performance in PCR assays compared to sputum. The use of silica-based DNA extraction methods may limit sensitivity due to incomplete lysis of Mycobacterium tuberculosis (MTB) cells and co-extraction of non-target nucleic acid, which may inhibit PCR.

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Unlabelled: Tongue swab (TS) sampling combined with qPCR to detect (MTB) DNA is a promising alternative to sputum testing for tuberculosis (TB) diagnosis. In prior studies, the sensitivity of tongue swabbing has usually been lower than sputum. In this study, we evaluated two strategies to improve sensitivity.

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Background: This work describes a sustainable and replicable initiative to optimize multi-disciplinary care and uptake of clinical best practices for patients in a pediatric intensive care unit in Low/Middle Income Countries and to understand the various factors that may play a role in the reduction in child mortality seen after implementation of the Quality Improvement Initiative.

Methods: This was a longitudinal assessment of a quality improvement program with the primary outcome of intubated pediatric patient mortality. The program was assessed 36 months following implementation of the quality improvement intervention using a -test with linear regression to control for co-variates.

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Objective: To determine whether implementation of an education-based intervention can sustainably improve upstream and downstream outcomes in intubated patients in a pediatric intensive care unit (PICU) in a low-resource country.

Design: Quality improvement study comparing airway-related morbidity in two previously studied patient cohorts pre-intervention (Epoch 1) and immediately post-intervention (Epoch 2) with a third cohort thirty-six months post-intervention (Epoch 3).

Setting: PICU of the largest public children's hospital in El Salvador.

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Background: Online medical education often faces challenges related to communication and comprehension barriers, particularly when the instructional language differs from the healthcare providers' and caregivers' native languages. Our study addresses these challenges within pediatric healthcare by employing generative language models to produce a linguistically tailored, multilingual curriculum that covers the topics of team training, surgical procedures, perioperative care, patient journeys, and educational resources for healthcare providers and caregivers.

Methods: An interdisciplinary group formulated a video curriculum in English, addressing the nuanced challenges of pediatric healthcare.

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The COVID-19 pandemic increased demands for respiratory disease testing to facilitate treatment and limit transmission, demonstrating in the process that most existing test options were too complex and expensive to perform in point-of-care or home scenarios. Lab-based molecular techniques can detect viral RNA in respiratory illnesses but are expensive and require trained personnel, while affordable antigen-based home tests lack sensitivity for early detection in newly infected or asymptomatic individuals. The few home RNA detection tests deployed were prohibitively expensive.

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Background: The assessment of pediatric residents applying to subspecialty fellowship programs relies on faculty letters of recommendation (LOR). However, it is unclear if pediatric faculty are confident that their LOR are effective.

Objective: This study aims to assess the confidence of pediatric faculty in writing an effective LOR for pediatric residents applying to subspecialty fellowship programs.

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Background: Pediatric hospital resources including critical care faculty (intensivists) redeployed to provide care to adults in adult ICUs or repurposed PICUs during wave 1 of the coronavirus disease 2019 (COVID-19) pandemic.

Objectives: To determine the magnitude of pediatric hospital resource redeployment and the experience of pediatric intensivists who redeployed to provide critical care to adults with COVID-19.

Methods: A mixed methods study was conducted at 9 hospitals in 8 United States cities where pediatric resources were redeployed to provide care to critically ill adults with COVID-19.

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Recent advances in electronics and microfluidics have enabled several research groups to develop fully integrated, sample-to-result isothermal nucleic acid amplification test (NAAT) platforms for the point of care. However, high component counts and costs have limited translation of these platforms beyond the clinic to low-resource settings-including homes. Many NAATs include complex, multi-component heater electronics based on flex circuits or multiple printed circuit boards (PCBs) to support essential NAAT steps such as lysis, sample deactivation, and nucleic acid amplification.

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Article Synopsis
  • - An 84-year-old man died from rabies six months after being bitten by a rabid bat, despite receiving timely post-exposure prophylaxis (PEP), prompting an investigation into the cause of this rare case.
  • - The investigation included reviewing medical records, conducting whole-genome sequencing, and analyzing the patient's immune response, revealing nonneutralizing rabies antibodies and an underlying unknown immune condition, which likely contributed to the infection.
  • - This case marks the first documented failure of rabies PEP using modern vaccines in the Western Hemisphere, highlighting the need for monitoring rabies antibody levels in patients with potential immune deficiencies after PEP completion.
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Pediatric providers were called on to care for adult patients well beyond their typical scope of practice during the first surge of the SARS-CoV-2 pandemic. Here, the authors share novel viewpoints and innovations from the perspective of providers, consultants, and families. The authors enumerate several of the challenges encountered, including those faced by leadership in supporting teams, balancing competing responsibilities to children while caring for critically ill adult patients, preserving the model of interdisciplinary care, maintaining communication with families, and finding meaning in work during this unprecedented crisis.

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Purpose: Modern multimodal analgesia has been shown to significantly reduce opioid use following total knee arthroplasty (TKA). This study was conducted to determine if changing TKA discharge opioid prescriptions from automatic to upon request resulted in more opioid free recoveries without compromising pain control.

Methods: Between December 2019 and August 2021, an orthopedic surgeon performed 144 primary unilateral TKAs; patients received the same multimodal analgesia protocol except for postoperative opioid prescribing.

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The Pennsylvania Department of Health Bureau of Laboratories (PABOL) tested 6855 animal samples for rabies using both the direct fluorescent antibody test (DFA) and LN34 pan-lyssavirus reverse transcriptase quantitative PCR (RT-qPCR) during 2017-2019. Only two samples (0.03%) were initially DFA negative but positive by LN34 RT-qPCR.

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Morel-Lavallée lesions (MLL) occur following closed degloving injuries in trauma and appear as subcutaneous fluid collections. These lesions provide a diagnostic dilemma due to their resemblance to other subcutaneous lesions, including post-traumatic or post-procedural hematomas, and malignant entities such as soft tissue sarcomas. Magnetic resonance imaging (MRI) remains the diagnostic test of choice to diagnose MLL.

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The simplest point-of-care assays are usually paper and plastic devices that detect proteins or nucleic acids at low cost and minimal user steps, albeit with poor limits of detection. Digital assays improve limits of detection and analyte quantification by splitting a sample across many wells (or droplets), preventing diffusion, and performing analyte amplification and detection in multiple small wells. However, truly digital nucleic acid amplification tests (NAATs) require costly consumable cartridges that are precisely manufactured, aligned, and operated to enable low detection limits.

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In the Western Hemisphere, bat-associated rabies viruses (RABVs) have established independent transmission cycles in multiple mammal hosts, forming genetically distinct lineages. In New Mexico, USA, skunks, bats, and gray foxes are rabies reservoir hosts and represent a public health risk because of encounters with humans. During 2015 and 2019, two previously undescribed RABVs were detected in 2 gray foxes (Urocyon cinereoargenteus) in Lincoln County, New Mexico.

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On June 16, 2021, rabies virus infection was confirmed in a dog included in a shipment of rescue animals imported into the United States from Azerbaijan. A multistate investigation was conducted to prevent secondary rabies cases, avoid reintroduction of a dog-maintained rabies virus variant (DMRVV), identify persons who might have been exposed and would be recommended to receive rabies postexposure prophylaxis, and investigate the cause of importation control failures. Results of a prospective serologic monitoring (PSM) protocol suggested that seven of 32 (22%) animals from the same shipment as the dog with confirmed rabies virus infection and who had available titer results after rabies vaccine booster had not been adequately vaccinated against rabies before importation.

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Treatment of multisystem inflammatory syndrome in children (MIS-C) can require significant critical care resources. Our aim is to alert mixed pediatric and adult hospitals worldwide of the possibility that pediatric and adult patients may simultaneously require cannulation to extracorporeal membrane oxygenation (ECMO) for MIS-C and severe COVID-19. We conducted a retrospective review of operations required to treat cardiogenic shock in 3 pediatric patients with a diagnosis of MIS-C admitted to a single medium-sized pediatric referral center located within a large academic medical center over a 14-day period.

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Unlabelled: Asthma is one of the most common conditions requiring admission to a pediatric intensive care unit. Dosing and weaning medications, particularly bronchodilators, are highly variable, and evidence-based weaning algorithms for clinicians are lacking in this setting.

Methods: Patients admitted to a quaternary pediatric intensive care unit diagnosed with acute severe asthma were evaluated for time spent receiving continuous albuterol therapy, the length of stay in the intensive unit care unit, and the length of stay in the hospital.

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Introduction: Unplanned extubation (UE) is orders of magnitude worse in low-income Pediatric Intensive Care Units (PICUs) than their high-income counterparts. Furthermore, a significant percent (20 %) of UEs result in a destabilizing event or cardiac collapse that negatively contributes to morbidity and mortality. As the principles of safe airway management are universal, we hypothesize that a multi-disciplinary educational intervention bundle which included provision of low-cost cuffed endotracheal tubes (ETT) and ETT tape will decrease the rate of unplanned extubation (UE) in a low-resourced PICU.

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Article Synopsis
  • Naloxone is a safe medicine often given in hospitals to help people who are confused or have weird symptoms.
  • Sometimes, it has caused a heart problem called ventricular tachycardia in adults who have used certain drugs before, but this hasn't happened in kids without a drug history.
  • A 17-year-old boy had a heart issue after getting naloxone, even though he had no history of using those drugs, so doctors should be ready to help kids who might have heart problems after taking naloxone.
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Objective: Based on feedback from nurses regarding the challenges of code documentation following the implementation of a new electronic health record (EHR), we sought to better understand inpatient nurse attitudes and practices in code documentation and to identify opportunities for improvement.

Methods: An anonymous electronic survey was distributed to all inpatient nurses working at a single, 999-bed, university-based, and quaternary care hospital. Participation in the study was voluntary and consent was implied by survey completion.

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