Jason H.T. Bates's research while affiliated with University of Vermont and other places

Publications (23)

Article
Full-text available
Multiple thoracic imaging modalities have been developed to link structure to function in the diagnosis and monitoring of lung disease. Volumetric computed tomography (CT) renders three-dimensional maps of lung structures and may be combined with positron emission tomography (PET) to obtain dynamic physiological data. Magnetic resonance imaging (MR...
Preprint
We present a new approach for physics-based computational modeling of diseased human lungs. Our main object is the development of a model that takes the novel step of incorporating the dynamics of airway recruitment/de-recruitment into an anatomically accurate, spatially resolved model of respiratory system mechanics, and the relation of these dyna...
Article
Rationale: There is continued debate regarding the equivalency of positive pressure ventilation (PPV) and negative pressure ventilation (NPV). Resolving this question is important because of the different practical ramifications of the two paradigms. Objectives: We sought to investigate the parallel between PPV and NPV and determine whether or n...
Article
Full-text available
This paper provides a review of a selection of papers published in the Journal of Clinical Monitoring and Computing in 2020 and 2021 highlighting what is new within the field of respiratory monitoring. Selected papers cover work in pulse oximetry monitoring, acoustic monitoring, respiratory system mechanics, monitoring during surgery, electrical im...
Article
Full-text available
Advancements in methods, technology, and our understanding of the pathobiology of lung injury have created the need to update the definition of experimental acute lung injury (ALI). We queried 50 participants with expertise in ALI and acute respiratory distress syndrome using a Delphi method composed of a series of electronic surveys and a virtual...
Chapter
Respiratory volumes, flows, and pressures comprise the fundamental signals from which parameters reflecting respiratory mechanical function are derived. The mainstay of lung function measurement continues to be spirometry which provides the empirical parameters FEV1 and FVC. These parameters are sensitive to the presence of lung disease but are rat...
Article
Full-text available
Background Mathematical modeling studies have suggested that pre-emptive school closures alone have little overall impact on SARS-CoV-2 transmission, but reopening schools in the background of community contact reduction presents a unique scenario that has not been fully assessed. Methods We adapted a previously published model using contact infor...
Article
Full-text available
Rapid assessment of breathing patterns is important for several emergency medical situations. In this research, we developed a non-invasive breathing analysis system that automatically detects different types of breathing patterns of clinical significance. Accelerometer and gyroscopic data were collected from lightweight wireless sensors placed on...
Article
The obesity epidemic is causing a rise in asthma incidence due to the appearance of an obesity-specific late-onset non-allergic (LONA) phenotype. We investigated why only a subset of obese participants develop LONA asthma by determining how obesity, both alone and in combination with LONA asthma, affects the volume dependence of respiratory system...
Article
The architectural complexity of the lung is crucial to its ability to function as an organ of gas exchange; the branching tree structure of the airways transforms the tracheal cross-section of only a few square centimeters to a blood-gas barrier with a surface area of tens of square meters and a thickness on the order of a micron or less. Connectiv...
Article
The variability of the breath-to-breath breathing pattern, and its alterations in disease, may hold information of physiologic and/or diagnostic value. We hypothesized that this variability arises from the way that noise is processed within the respiratory feedback control loop, and that pathologic alterations to specific components within the syst...
Article
An inverse model consisting of two elastic compartments connected in series and served by two airway conduits has recently been fit to measurements of respiratory impedance in obese subjects. Increases in the resistance of the distal conduit of the model with increasing body mass index have been linked to peripheral airway compression by mass loadi...
Article
Understanding how the mechanisms of ventilator-induced lung injury (VILI), namely atelectrauma and volutrauma, contribute to the failure of the blood-gas barrier and subsequent intrusion of edematous fluid into the airspace is essential for the design of mechanical ventilation strategies that minimize VILI. We ventilated mice with different combina...
Article
The measurement of lung function in mice and rats is crucial for understanding how well small animal models of pulmonary disease recapitulate human clinical pathology, but brings with it the challenge of making accurate measurements in animals as small as a mouse. Overcoming these challenges can be achieved in a number of ways, each based on a mode...
Article
Full-text available
The world is in the midst of an unprecedented epidemic of obesity. This epidemic has changed the presentation and etiology of common diseases. For example, steatohepatitis, directly attributable to obesity, is now the most common cause of cirrhosis in the United States. Type 2 diabetes is increasingly being diagnosed in children. Pulmonary research...
Article
The GI tract of a normal adult human contains on the order of 1014 foreign living organisms, collectively known as the gut microbiome, the proper maintenance of which is critical for health. Because the gut microbiome is a dynamic system of vast complexity, computational modeling is assuming an increasingly important role in helping us to understan...

Citations

... Ventilator-induced lung injury (VILI) is a common serious complication of mechanical ventilation [24]. In recent years, research has shown that the mechanism of VILI includes not only mechanical stretching but also biological lung injury caused by mechanical stretching [25]. ...
... Therefore, more sensitive validated quantitative CT outcomes are required to detect changes in lung structure over time, as they have the potential reduce the size of samples in clinical trials and provide more incremental assessments of treatment efficacy in PwCF (Rosenow et al., 2015;Kuo et al., 2017b). Hsia et al. (2023) compiled relevant quantitative CT metrics for the assessment of pulmonary diseases. ...
... Recent mechanics-focused (e.g., surface strain, elastance, peak-inspiratory measures) examinations have unearthed both ventilation mode dependencies and non-dependencies [24,73]. Large and small mammalian species mechanics investigations (murine, ovine, and porcine) found equivalent end-inflation pressure and volume measurements whether testing with pressure-or volume-controlled apparatuses [24,27,73]. ...
... 7 Previous studies have confirmed that both incremental and decremental titrations reduce intraoperative shunting; however, only decremental titration improves oxygenation and reduces the airway pressure fluctuations required for pulmonary ventilation. 26 Another recent study suggested that incremental PEEP titration also improves oxygenation 27 and lung gas distribution uniformity in patients undergoing gynecologic laparoscopy. 28 Therefore, patients who underwent OLV during thoracoscopic surgery were included in this study and were studied in conjunction with personalized PEEP titration and PCV-VG. ...
... ARDS is defined as hypoxaemia and respiratory failure secondary to non-cardiogenic pulmonary oedema [3,7]. Studies have shown that pneumonia, ALI and ARDS account for a large proportion of global morbidity and mortality, with pneumonia itself being the most common cause of ARDS [8,9]. The presented cases indicate that acute respiratory failure due to bacterial pneumonia was the immediate cause of death in both patients. ...
... Sin embargo, después de más de un año, hay poco consenso sobre cómo garantizar la continuidad de la educación mientras se intenta evitar la transmisión del virus. En este sentido, Lee et al. (2020) sugieren, basados en datos de Shanghái, que las escuelas pueden reabrir con precauciones y en condiciones de reducción extrema de contacto entre la comunidad. ...
... Eleven studies presented the ages of the participants in time intervals, varying between 18 and 67 years of age [48][49][50][51][52][53][54][55][56][57][58]. Four studies covered the age by reporting only the global mean, varying between x = 23 and x = 29.16 ...
... On the other hand, obesity related central airway collapse can be independent of asthma phenotype [34]. Airway mechanics can be altered in both obesity and/or asthma [35]. BMI has significant effects on all of the lung volumes [36][37][38][39], and the greatest effects were on functional residual capacity and expiratory reserve volume [40]. ...
... The summation of cell fate decisions made by individual cells in a tissue results in an emergent tissue response, such as an expanded, or regressed, microvascular network. Multi-scale computational models allow us to investigate how these different overlapping intracellular and extracellular cues integrate within cells to generate tissue-level outcomes, as well as to isolate how alterations in one cue affects the overall system 55 . Our group has previously developed multi-scale models by combining agent-based modeling (ABM) of multiple cells in a population with logic-based ordinary differential equations modeling of intracellular signaling networks within each simulated cell 56 . ...
... Human breathing is a synergistic process constantly controlled by the autonomic nervous system and may also be deliberately controlled at will, resulting in various breathing patterns 22 . Ashtanga yoga refers to the formal and conventional practice of breath control known as Pranayama, which regulates prana, or the life force. ...