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Adaptive support ventilation

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https://www.readbyqxmd.com/read/28518041/stockpiling-ventilators-for-influenza-pandemics
#1
Hsin-Chan Huang, Ozgur M Araz, David P Morton, Gregory P Johnson, Paul Damien, Bruce Clements, Lauren Ancel Meyers
In preparing for influenza pandemics, public health agencies stockpile critical medical resources. Determining appropriate quantities and locations for such resources can be challenging, given the considerable uncertainty in the timing and severity of future pandemics. We introduce a method for optimizing stockpiles of mechanical ventilators, which are critical for treating hospitalized influenza patients in respiratory failure. As a case study, we consider the US state of Texas during mild, moderate, and severe pandemics...
June 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28497943/the-effects-of-over-the-counter-jaw-repositioning-mouthguards-on-aerobic-performance
#2
Devon L Golem, Patrick M Davitt, Shawn M Arent
BACKGROUND: Though jaw-repositioning devices have been found to increase size of upper respiratory airways in individuals, the effects of jaw-repositioning mouthguards on respiratory function during exercise have not been fully explored. The purpose of this study is to determine the effects of over-the-counter (OTC) jaw-repositioning mouthguards on respiratory function and aerobic performance in male athletes. METHODS: College-aged, male athletes (N.=20) participated in this randomized, crossover, controlled study...
June 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28481126/increased-levels-of-alveolar-and-airway-exhaled-nitric-oxide-in-runners
#3
Alexandra Thornadtsson, Nikola Drca, Fabio Ricciardolo, Marieann Högman
AIM: The objective of this study was to apply extended NO analysis for measurements of NO dynamics in the lung, divided into alveolar and airway contribution, in amateur runners and marathoners. METHODS: The athletes participated in either a marathon or a half marathon. The athletes self-reported their age, weight, height, training distance per week, competing distance, cardio-pulmonary health, atopic status, and use of tobacco. Measurements of exhaled NO (FENO) with estimation of alveolar NO (CANO) and airway flux (JawNO), ventilation, pulse oximetry, and peak flow were performed before, immediately after, and 1 hour after completing the race...
May 8, 2017: Upsala Journal of Medical Sciences
https://www.readbyqxmd.com/read/28278435/correlation-between-transition-percentage-of-minute-volume-tmv-and-outcome-of-patients-with-acute-respiratory-failure
#4
Chung-Kan Peng, Shu-Fen Wu, Shih-Hsing Yang, Chuan-Fa Hsieh, Chung-Chih Huang, Yuh-Chin T Huang, Chin-Pyng Wu
PURPOSE: We have previously shown in patients receiving adaptive support ventilation (ASV) that there existed a Transition %MinVol (TMV%) where the patient's work of breathing began to reduce. In this study, we tested the hypothesis that higher TMV% would be associated with poorer outcome in patients with acute respiratory failure. MATERIALS AND METHODS: In this prospective observational study, we recruited patients with acute respiratory failure on ASV between December 2012 and September 2013 in a mixed ICU...
June 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/28269080/convolutive-blind-source-separation-on-surface-emg-signals-for-respiratory-diagnostics-and-medical-ventilation-control
#5
Herbert Buchner, Eike Petersen, Marcus Eger, Philipp Rostalski
The electromyogram (EMG) is an important tool for assessing the activity of a muscle and thus also a valuable measure for the diagnosis and control of respiratory support. In this article we propose convolutive blind source separation (BSS) as an effective tool to pre-process surface electromyogram (sEMG) data of the human respiratory muscles. Specifically, the problem of discriminating between inspiratory, expiratory and cardiac muscle activity is addressed, which currently poses a major obstacle for the clinical use of sEMG for adaptive ventilation control...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28260211/respiratory-muscle-contractile-inactivity-induced-by-mechanical-ventilation-in-piglets-leads-to-leaky-ryanodine-receptors-and-diaphragm-weakness
#6
Stefan Matecki, Boris Jung, Nathalie Saint, Valerie Scheuermann, Samir Jaber, Alain Lacampagne
Respiratory muscle contractile inactivity during mechanical ventilation (MV) induces diaphragm muscle weakness, a condition referred to as ventilator-induced diaphragmatic dysfunction (VIDD). Although VIDD pathophysiological mechanisms are still not fully understood, it has been recently suggested that remodeling of the sarcoplasmic reticulum (SR) calcium release channel/ryanodine receptors (RyR1) in the diaphragm is a proximal mechanism of VIDD. Here, we used piglets, a large animal model of VIDD that is more relevant to human pathophysiology, to determine whether RyR1 alterations are observed in the presence of diaphragm weakness...
March 4, 2017: Journal of Muscle Research and Cell Motility
https://www.readbyqxmd.com/read/28227300/convolutive-blind-source-separation-on-surface-emg-signals-for-respiratory-diagnostics-and-medical-ventilation-control
#7
Herbert Buchner, Eike Petersen, Marcus Eger, Philipp Rostalski, Herbert Buchner, Eike Petersen, Marcus Eger, Philipp Rostalski, Marcus Eger, Philipp Rostalski, Eike Petersen, Herhert Buchner
The electromyogram (EMG) is an important tool for assessing the activity of a muscle and thus also a valuable measure for the diagnosis and control of respiratory support. In this article we propose convolutive blind source separation (BSS) as an effective tool to pre-process surface electromyogram (sEMG) data of the human respiratory muscles. Specifically, the problem of discriminating between inspiratory, expiratory and cardiac muscle activity is addressed, which currently poses a major obstacle for the clinical use of sEMG for adaptive ventilation control...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28166828/a-psychological-intervention-to-promote-acceptance-and-adherence-to-non-invasive-ventilation-in-people-with-chronic-obstructive-pulmonary-disease-study-protocol-of-a-randomised-controlled-trial
#8
Eleonora Volpato, Paolo Banfi, Francesco Pagnini
BACKGROUND: People with chronic obstructive pulmonary disease (COPD) sometimes experience anxiety, depression and comorbid cognitive deficits. Rather than being merely a consequence of symptom-related physical impairments these additional problems may be part of the clinical course of the condition. The relationship between the physical and psychological aspects of the condition is illustrated by the patterns of use of non-invasive ventilation (NIV); NIV is often rejected or used inappropriately, resulting in clinical deterioration and an increase in health care costs...
February 6, 2017: Trials
https://www.readbyqxmd.com/read/28165675/intratracheal-administration-of-budesonide-surfactant-in-prevention-of-bronchopulmonary-dysplasia-in-very-low-birth-weight-infants-a-systematic-review-and-meta-analysis
#9
REVIEW
Rohini Venkataraman, Majeeda Kamaluddeen, Shabih U Hasan, Helen Lee Robertson, Abhay Lodha
Despite the near universal adaptation of gentle mechanical ventilation, surfactant use and non-invasive respiratory support, bronchopulmonary dysplasia (BPD) remains one of the most common respiratory morbidities in very low birth weight (VLBW) infants. Thus, the objective of this review was to evaluate the efficacy of intra-tracheal administration of budesonide-surfactant mixture in preventing bronchopulmonary dysplasia (BPD) in very low birth weight (VLBW) infants. MEDLINE, EMBASE, and PubMed were searched for randomized clinical trials in which intra-tracheal administration of budesonide-surfactant was used to prevent BPD in infants...
February 6, 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/28137269/a-diaphragmatic-electrical-activity-based-optimization-strategy-during-pressure-support-ventilation-improves-synchronization-but-does-not-impact-work-of-breathing
#10
Francois Beloncle, Lise Piquilloud, Nuttapol Rittayamai, Christer Sinderby, Hadrien Rozé, Laurent Brochard
BACKGROUND: Poor patient-ventilator synchronization is often observed during pressure support ventilation (PSV) and has been associated with prolonged duration of mechanical ventilation and poor outcome. Diaphragmatic electrical activity (Eadi) recorded using specialized nasogastric tubes is a surrogate of respiratory brain stem output. This study aimed at testing whether adapting ventilator settings during PSV using a protocolized Eadi-based optimization strategy, or Eadi-triggered and -cycled assisted pressure ventilation (or PSVN) could (1) improve patient-ventilator interaction and (2) reduce or normalize patient respiratory effort as estimated by the work of breathing (WOB) and the pressure time product (PTP)...
January 31, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/28129143/riemannian-geometry-applied-to-detection-of-respiratory-states-from-eeg-signals-the-basis-for-a-brain-ventilator-interface
#11
Xavier Navarro-Sune, Anna L Hudson, Fabrizio De Vico Fallani, Jaques Martinerie, Adrien Witon, Pierre Pouget, Mathieu Raux, Thomas Similowski, Mario Chavez
During mechanical ventilation, patient-ventilator disharmony is frequently observed and may result in increased breathing effort, compromising the patient's comfort and recovery. This circumstance requires clinical intervention and becomes challenging when patients are sedated or verbal communication is difficult. In this work, we propose a brain computer interface (BCI) to automatically and non-invasively detect patient-ventilator disharmony from electroencephalographic (EEG) signals: a brain-ventilator interface...
July 19, 2016: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28056816/optimization-of-pressure-settings-during-adaptive-servo-ventilation-support-using-real-time-heart-rate-variability-assessment-initial-case-report
#12
Teruhiko Imamura, Daisuke Nitta, Koichiro Kinugawa
BACKGROUND: Adaptive servo-ventilation (ASV) therapy is a recent non-invasive positive pressure ventilation therapy that was developed for patients with heart failure (HF) refractory to optimal medical therapy. However, it is likely that ASV therapy at relatively higher pressure setting worsens some of the patients' prognosis compared with optimal medical therapy. Therefore, identification of optimal pressure settings of ASV therapy is warranted. CASE PRESENTATION: We present the case of a 42-year-old male with HF, which was caused by dilated cardiomyopathy, who was admitted to our institution for evaluating his eligibility for heart transplantation...
January 5, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28048766/su-g-bra-16-target-dose-comparison-for-dynamic-mlc-tracking-and-mid-ventilation-planning-in-lung-radiotherapy-subject-to-intrafractional-baseline-drifts
#13
M J Menten, M F Fast, S Nill, U Oelfke
PURPOSE: Lung tumor motion during radiotherapy can be accounted for by expanded treatment margins, for example using a mid-ventilation planning approach, or by localizing the tumor in real-time and adapting the treatment beam with multileaf collimator (MLC) tracking. This study evaluates the effect of intrafractional changes in the average tumor position (baseline drifts) on these two treatment techniques. METHODS: Lung stereotactic treatment plans (9-beam IMRT, 54Gy/3 fractions, mean treatment time: 9...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048615/tu-h-202-04-the-vampire-challenge-preliminary-results-from-a-multi-institutional-study-of-ct-ventilation-image-accuracy
#14
J Kipritidis
CT ventilation imaging is an exciting functional imaging modality that combines four-dimensional computed tomography (4DCT) and deformable image registration (DIR) to provide exquisite ventilation maps of the lung. CT ventilation imaging can be used for: (1) Functional avoidance in thoracic radiation therapy, (2) Imaging longitudinal changes in regional lung function for treatment assessment and adaptation, (3) Image-assisted diagnosis of non-oncologic respiratory diseases. CT ventilation imaging uses CT, a predominantly anatomic imaging modality, and through imaging processing creates functional images...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048557/tu-h-202-00-ct-ventilation-imaging-the-new-clinical-reality-of-functional-avoidance-and-response-assessment-in-lung-cancer-radiation-therapy
#15
Paul Keall
CT ventilation imaging is an exciting functional imaging modality that combines four-dimensional computed tomography (4DCT) and deformable image registration (DIR) to provide exquisite ventilation maps of the lung. CT ventilation imaging can be used for: (1) Functional avoidance in thoracic radiation therapy, (2) Imaging longitudinal changes in regional lung function for treatment assessment and adaptation, (3) Image-assisted diagnosis of non-oncologic respiratory diseases. CT ventilation imaging uses CT, a predominantly anatomic imaging modality, and through imaging processing creates functional images...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047895/tu-h-202-01-introduction-to-ct-ventilation-imaging-principles-validation-and-clinical-translation
#16
T Yamamoto
CT ventilation imaging is an exciting functional imaging modality that combines four-dimensional computed tomography (4DCT) and deformable image registration (DIR) to provide exquisite ventilation maps of the lung. CT ventilation imaging can be used for: (1) Functional avoidance in thoracic radiation therapy, (2) Imaging longitudinal changes in regional lung function for treatment assessment and adaptation, (3) Image-assisted diagnosis of non-oncologic respiratory diseases. CT ventilation imaging uses CT, a predominantly anatomic imaging modality, and through imaging processing creates functional images...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047233/tu-h-202-02-applications-validation-clinical-endpoints-and-opportunities-for-ct-ventilation
#17
Y Vinogradskiy
CT ventilation imaging is an exciting functional imaging modality that combines four-dimensional computed tomography (4DCT) and deformable image registration (DIR) to provide exquisite ventilation maps of the lung. CT ventilation imaging can be used for: (1) Functional avoidance in thoracic radiation therapy, (2) Imaging longitudinal changes in regional lung function for treatment assessment and adaptation, (3) Image-assisted diagnosis of non-oncologic respiratory diseases. CT ventilation imaging uses CT, a predominantly anatomic imaging modality, and through imaging processing creates functional images...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046563/tu-h-202-03-spatial-distributions-of-radiation-induced-pulmonary-changes-can-be-modeled-and-utilized-for-image-guided-planning-and-therapy-to-improve-pulmonary-function-preservation-and-hence-the-therapeutic-ratio-for-lung-cancer
#18
J Bayouth
CT ventilation imaging is an exciting functional imaging modality that combines four-dimensional computed tomography (4DCT) and deformable image registration (DIR) to provide exquisite ventilation maps of the lung. CT ventilation imaging can be used for: (1) Functional avoidance in thoracic radiation therapy, (2) Imaging longitudinal changes in regional lung function for treatment assessment and adaptation, (3) Image-assisted diagnosis of non-oncologic respiratory diseases. CT ventilation imaging uses CT, a predominantly anatomic imaging modality, and through imaging processing creates functional images...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/27903667/experiences-of-noninvasive-ventilation-in-adults-with-hypercapnic-respiratory-failure-a-review-of-evidence
#19
REVIEW
Hamadziripi Ngandu, Nichola Gale, Jane B Hopkinson
Noninvasive ventilation (NIV) has been shown to be beneficial for patients with respiratory failure; however, many patients fail to tolerate it and require other interventions. The objective of this thematic synthesis was to describe the nature of NIV experiences in adults with hypercapnic respiratory failure. A systematic, computerised literature search of English-language databases was undertaken with no restriction on date of publication. A total of 99 papers was identified and screened for eligibility from databases including CINAHL, Medline and PsycINFO, and some were hand searched...
December 2016: European Respiratory Review: An Official Journal of the European Respiratory Society
https://www.readbyqxmd.com/read/27780589/risk-factors-for-pressure-ulcer-development-in-intensive-care-units-systematic-review
#20
M Lima Serrano, M I González Méndez, F M Carrasco Cebollero, J S Lima Rodríguez
INTRODUCTION: Pressure ulcers represent a significant problem for patients, professionals and health systems. Their reported incidence and prevalence are significant worldwide. Their character iatrogenic states that its appearance is preventable and its incidence is an indicator of scientific and technical quality both in primary care and specialized care. The aim of this review was to identify risk factors associated with the occurrence of pressure ulcers in critically ill patients. METHODOLOGY: The PRISMA Declaration recommendations have been followed and adapted to studies identifying risk factors...
October 22, 2016: Medicina Intensiva
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