keyword
MENU ▼
Read by QxMD icon Read
search

Ventilatory modes

keyword
https://www.readbyqxmd.com/read/28642309/long-term-volume-targeted-pressure-controlled-ventilation-sense%C3%A2-or%C3%A2-nonsense
#1
REVIEW
Maria Paola Arellano-Maric, Cesare Gregoretti, Marieke Duivermann, Wolfram Windisch
The technology underlying the development of novel ventilatory modes for long-term noninvasive ventilation of patients with chronic hypercapnia is continuously evolving. Volume-targeted pressure-controlled ventilation is a hybrid ventilation mode designed to combine the advantages of conventional ventilation modes, while avoiding their drawbacks. However, manufacturers have created different names and have patented algorithms and set-up variables, which can result in confusion for physicians and respiratory therapists...
June 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28608135/can-proportional-ventilation-modes-facilitate-exercise-in-critically-ill-patients-a-physiological-cross-over-study-pressure-support-versus-proportional-ventilation-during-lower-limb-exercise-in-ventilated-critically-ill-patients
#2
Evangelia Akoumianaki, Nicolas Dousse, Aissam Lyazidi, Jean-Claude Lefebvre, Severine Graf, Ricardo Luiz Cordioli, Nathalie Rey, Jean-Christophe Marie Richard, Laurent Brochard
BACKGROUND: Early exercise of critically ill patients may have beneficial effects on muscle strength, mass and systemic inflammation. During pressure support ventilation (PSV), a mismatch between demand and assist could increase work of breathing and limit exercise. A better exercise tolerance is possible with a proportional mode of ventilation (Proportional Assist Ventilation, PAV+ and Neurally Adjusted Ventilatory Assist, NAVA). We examined whether, in critically ill patients, PSV and proportional ventilation have different effects on respiratory muscles unloading and work efficiency during exercise...
December 2017: Annals of Intensive Care
https://www.readbyqxmd.com/read/28583555/veno-arterial-venous-hybrid-mode-of-extracorporeal-membrane-oxygenation-for-acute-respiratory-distress-syndrome-combined-with-septic-shock-in-a-liver-transplant-patient-a-case-report
#3
J-I Park, B-H Jung, S-G Lee
BACKGROUND: Post-operative respiratory failure is common in liver transplant patients, with a direct effect on graft and recipient outcomes. We present a case of successful treatment for a patient who had acute respiratory distress syndrome combined with septic shock after living-donor liver transplantation with veno-arterial-venous hybrid mode of extracorporeal membrane oxygenation (ECMO) support. METHODS: A 49-year-old male patient underwent successful emergency living-donor liver transplantation for acute-on-chronic liver failure associated with alcoholic liver cirrhosis...
June 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28578708/effects-of-neurally-adjusted-ventilatory-assist-on-air-distribution-and-dead-space-in-patients-with-acute-exacerbation-of-chronic-obstructive-pulmonary-disease
#4
Qin Sun, Ling Liu, Chun Pan, Zhanqi Zhao, Jingyuan Xu, Airan Liu, Haibo Qiu
BACKGROUND: Neurally adjusted ventilatory assist (NAVA) could improve patient-ventilator interaction; its effects on ventilation distribution and dead space are still unknown. The aim of this study was to evaluate the effects of varying levels of assist during NAVA and pressure support ventilation (PSV) on ventilation distribution and dead space in patients with acute exacerbation of chronic obstructive pulmonary disease (AECOPD). METHODS: Fifteen mechanically ventilated patients with AECOPD were included in the study...
June 2, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/28538774/influence-of-the-ventilatory-mode-on-acute-adverse-effects-and-facial-thermography-after-noninvasive-ventilation
#5
Suzy Maria Montenegro Pontes, Luiz Henrique de Paula Melo, Nathalia Parente de Sousa Maia, Andrea da Nóbrega Cirino Nogueira, Thiago Brasileiro Vasconcelos, Eanes Delgado Barros Pereira, Vasco Pinheiro Diógenes Bastos, Marcelo Alcantara Holanda
Objective: To compare the incidence and intensity of acute adverse effects and the variation in the temperature of facial skin by thermography after the use of noninvasive ventilation (NIV). Methods: We included 20 healthy volunteers receiving NIV via oronasal mask for 1 h. The volunteers were randomly divided into two groups according to the ventilatory mode: bilevel positive airway pressure (BiPAP) or continuous positive airway pressure (CPAP). Facial thermography was performed in order to determine the temperature of the face where it was in contact with the mask and of the nasal dorsum at various time points...
March 2017: Jornal Brasileiro de Pneumologia: Publicaça̋o Oficial da Sociedade Brasileira de Pneumologia e Tisilogia
https://www.readbyqxmd.com/read/28485989/non-invasive-positive-airway-pressure-in-obesity-hypoventilation-syndrome-and-chronic-obstructive-pulmonary-disease-present-and-future-perspectives
#6
Victor R Ramírez-Molina, Francisco J Gómez-de-Terreros, Javier Barca-Durán, Juan F Masa
Obesity hypoventilation syndrome (OHS) is a sleep disorder that has acquired great importance worldwide because of its prevalence and association with obesity leading to increased morbidity and mortality with reduced quality of life. The primary feature is insufficient sleep-related ventilation, resulting in abnormally elevated arterial carbon dioxide pressure (PaCO2) during sleep and demonstration of daytime hypoventilation. There are three main mechanisms that can generate diurnal hypoventilation in obese patients: alteration of the respiratory mechanics secondary to obesity; central hypoventilation secondary to leptin resistance and sleep disorder with sleep hypoventilation and obstructive apnoeas, which can be potentially solved with the use of positive airway pressure: non-invasive ventilation (NIV) and continuous positive airway pressure (CPAP)...
May 9, 2017: COPD
https://www.readbyqxmd.com/read/28459325/ajrccm-100-year-anniversary-homeward-bound-a-centenary-of-home-mechanical-ventilation
#7
Matthew Hind, Michael I Polkey, Anita K Simonds
The evolution of home mechanical ventilation is an intertwined chronicle of negative and positive pressure modes and their role in managing ventilatory failure in neuromuscular diseases and other chronic disorders. The uptake of noninvasive positive pressure ventilation has resulted in widespread growth in home ventilation internationally and fewer patients being ventilated invasively. As with many applications of domiciliary medical technology, home ventilatory support has either led or run in parallel with acute hospital applications and has been influenced by medical and societal shifts in the approach to chronic care, the creation of community support teams, a preference of recipients to be treated at home, and economic imperatives...
May 1, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28427883/born-not-breathing-a-randomised-trial-comparing-two-self-inflating-bag-masks-during-newborn-resuscitation-in-tanzania
#8
Monica Thallinger, Hege Langli Ersdal, Fortunata Francis, Anita Yeconia, Estomih Mduma, Hussein Kidanto, Jørgen Erland Linde, Joar Eilevstjønn, Nina Gunnes, Ketil Størdal
AIMS: Effective ventilation is crucial to save non-breathing newborns. We compared standard equipment for newborn resuscitation to a new Upright bag, in an area with high neonatal mortality. METHODS: Newborns requiring resuscitation at Haydom Lutheran Hospital, Tanzania, were ventilated with 230ml standard or 320ml Upright bag-mask by weekly non-blinded block randomisation. A Laerdal Newborn Resuscitation Monitor collected ventilation data through a flow sensor between mask and bag and heart rate with electrocardiography electrodes...
July 2017: Resuscitation
https://www.readbyqxmd.com/read/28399118/feasibility-and-physiological-effects-of-non-invasive-neurally-adjusted-ventilatory-assist-niv-nava-in-preterm-infants
#9
Christopher Gibu, Phillip Cheng, Raymond J Ward, Benjamin Castro, Gregory P Heldt
BACKGROUND: Non-invasive Neurally Adjusted Ventilator Assist (NIV-NAVA) was introduced to our clinical practice via a pilot and a randomized observational study to assess its safety, feasibility, and short term physiological effects. METHODS: The pilot protocol applied NIV-NAVA to 11 infants on nasal CPAP, high-flow nasal cannula (HFNC), or nasal IMV (NIMV), in multiple 2-4 h periods of NIV-NAVA for comparison. This provided the necessary data to design a randomized, controlled observational cross-over study in 8 additional infants to compare the physiological effects of NIV-NAVA to NIMV during 2-hour steady state conditions...
April 11, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28370024/prefrontal-oxygenation-and-the-acoustic-startle-eyeblink-response-during-exercise-a-test-of-the-dual-mode-model
#10
Gavin D Tempest, Gaynor Parfitt
The interplay between the prefrontal cortex and amygdala is proposed to explain the regulation of affective responses (pleasure/displeasure) during exercise as outlined in the dual-mode model. However, due to methodological limitations the dual-mode model has not been fully tested. In this study, prefrontal oxygenation (using near-infrared spectroscopy) and amygdala activity (reflected by eyeblink amplitude using acoustic startle methodology) were recorded during exercise standardized to metabolic processes: 80% of ventilatory threshold (below VT), at the VT, and at the respiratory compensation point (RCP)...
March 30, 2017: Psychophysiology
https://www.readbyqxmd.com/read/28272069/does-prehospital-time-affect-survival-of-major-trauma-patients-where-there-is-no-prehospital-care
#11
S B Dharap, S Kamath, V Kumar
BACKGROUND: Survival after major trauma is considered to be time dependent. Efficient prehospital care with rapid transport is the norm in developed countries, which is not available in many lower middle and low-income countries. The aim of this study was to assess the effect of prehospital time and primary treatment given on survival of major trauma patients in a setting without prehospital care. MATERIALS AND METHODS: This prospective observational study was carried out in a university hospital in Mumbai, from January to December 2014...
March 3, 2017: Journal of Postgraduate Medicine
https://www.readbyqxmd.com/read/28196820/combined-use-of-neurally-adjusted-ventilatory-assist-nava-and-vertical-expandable-prostethic-titanium-rib-veptr-in-a-patient-with-spondylocostal-dysostosis-and-associated-bronchomalacia
#12
Martí Pons-Odena, Alba Verges, Natalia Arza, Francisco José Cambra
Jarcho-Levin syndrome is a rare disorder characterised by defects in vertebral and costal segmentation of varying severity. Respiratory complications are the main cause of death or severe comorbidity due to a restrictive rib cage. A 3 months old infant with Spondylocostal dysostosis and associated bronchomalacia experiencing severe asynchrony during the weaning process is reported. The Neurally Adjusted Ventilatory Assist (NAVA) mode was used to improve adaptation to mechanical ventilation after Vertical Expandable Prosthetic Titanium Ribs (VEPTRs) were implanted...
February 14, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28180985/crossover-study-of-assist-control-ventilation-and-neurally-adjusted-ventilatory-assist
#13
Sandeep Shetty, Katie Hunt, Janet Peacock, Kamal Ali, Anne Greenough
Some studies of infants with acute respiratory distress have demonstrated that neurally adjusted ventilator assist (NAVA) had better short-term results compared to non-triggered or other triggered models. We determined if very prematurely born infants with evolving or established bronchopulmonary dysplasia (BPD) had a lower oxygenation index (OI) on NAVA compared to assist control ventilation (ACV). Infants were studied for 1 h each on each mode. At the end of each hour, blood gas analysis was performed and the OI calculated...
April 2017: European Journal of Pediatrics
https://www.readbyqxmd.com/read/28153938/exertional-dyspnea-associated-with-chest-wall-strapping-is-reduced-when-external-dead-space-substitutes-for-part-of-the-exercise-stimulus-to-ventilation
#14
Luke A Garske, Ravin Lal, Ian B Stewart, Norman R Morris, Troy J Cross, Lewis Adams
Chest wall strapping has been used to assess mechanisms of dyspnea with restrictive lung disease. This study examined the hypothesis that dyspnea with restriction depends principally on the degree of reflex ventilatory stimulation. We compared dyspnea at the same (iso)ventilation when added dead space provided a component of the ventilatory stimulus during exercise. Eleven healthy men undertook a randomized controlled crossover trial that compared four constant work exercise conditions: 1) control (CTRL): unrestricted breathing at 90% gas exchange threshold (GET); 2) CTRL+dead space (DS): unrestricted breathing with 0...
May 1, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28149028/comparative-evaluation-of-central-venous-pressure-and-sonographic-inferior-vena-cava-variability-in-assessing-fluid-responsiveness-in-septic-shock
#15
Manjri Garg, Jyotsna Sen, Sandeep Goyal, Dhruva Chaudhry
OBJECTIVE: Fluid infusion, the most critical step in the resuscitation of patients with septic shock, needs preferably continuous invasive hemodynamic monitoring. The study was planned to evaluate the efficacy of ultrasonographically measured inferior vena cava collapsibility index (IVC CI) in comparison to central venous pressure (CVP) in predicting fluid responsiveness in septic shock. MATERIALS AND METHODS: Thirty-six patients of septic shock requiring ventilatory support (invasive/noninvasive) were included...
December 2016: Indian Journal of Critical Care Medicine
https://www.readbyqxmd.com/read/28145212/-when-is-a-venous-blood-gas-analysis-sufficient-in-the-emergency-department
#16
J A J M van Exsel, S O Simons, C Kramers, Y F Heijdra
Blood gas analysis plays an important role in the initial assessment of a patient in the emergency ward. We present three different patient cases to illustrate when to opt for a venous or an arterial blood gas analysis. Arterial punctures are more painful and carry a higher risk of complications compared to venous punctures. It is possible to use a venous blood gas to screen for acute acid/base disturbances. Ventilatory compensation or anion gap cannot be calculated reliably with a venous blood gas. On the other hand, the diagnosis diabetic keto-acidosis can be made with a venous blood gas; this mode of sampling can also be used for lactate measurement at the emergency department as an independent prognostic marker for mortality...
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/28138234/respiratory-muscle-activity-and-patient-ventilator-asynchrony-during-different-settings-of-noninvasive-ventilation-in-stable-hypercapnic-copd-does-high-inspiratory-pressure-lead-to-respiratory-muscle-unloading
#17
Marieke L Duiverman, Anouk S Huberts, Leo A van Eykern, Gerrie Bladder, Peter J Wijkstra
INTRODUCTION: High-intensity noninvasive ventilation (NIV) has been shown to improve outcomes in stable chronic obstructive pulmonary disease patients. However, there is insufficient knowledge about whether with this more controlled ventilatory mode optimal respiratory muscle unloading is provided without an increase in patient-ventilator asynchrony (PVA). PATIENTS AND METHODS: Ten chronic obstructive pulmonary disease patients on home mechanical ventilation were included...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28068958/effects-of-ventilator-settings-nebulizer-and-exhalation-port-position-on-albuterol-delivery-during-non-invasive-ventilation-an-in-vitro-study
#18
Yuda Sutherasan, Lorenzo Ball, Pasquale Raimondo, Valentina Caratto, Elisa Sanguineti, Federico Costantino, Maurizio Ferretti, Robert M Kacmarek, Paolo Pelosi
BACKGROUND: Few studies have investigated the factors affecting aerosol delivery during non-invasive ventilation (NIV). Our aim was to investigate, using a bench-top model, the effect of different ventilator settings and positions of the exhalation port and nebulizer on the amount of albuterol delivered to a lung simulator. METHODS: A lung model simulating spontaneous breathing was connected to a single-limb NIV ventilator, set in bi-level positive airway pressure (BIPAP) with inspiratory/expiratory pressures of 10/5, 15/10, 15/5, and 20/10 cmH2O, or continuous positive airway pressure (CPAP) of 5 and 10 cmH2O...
January 10, 2017: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/28063223/neurally-adjusted-ventilatory-assist-for-infants-under-prolonged-ventilation
#19
Juyoung Lee, Han-Suk Kim, Young Hwa Jung, Chang Won Choi, Yong Hoon Jun
BACKGROUND: Severe bronchopulmonary dysplasia often leads to prolonged mechanical ventilation lasting several months. Cyanotic episodes frequently occur in these patients, necessitating long-term sedation and/or intermittent muscle paralysis. Neurally adjusted ventilatory assist (NAVA) might provide precisely the amount of support that these patients need without sedation. METHODS: We reviewed the medical records of preterm infants who underwent tracheostomy and required mechanical ventilation for >6 months during a period of 6 years...
May 2017: Pediatrics International: Official Journal of the Japan Pediatric Society
https://www.readbyqxmd.com/read/28052047/mechanical-ventilatory-modes-and-cardioventilatory-phase-synchronization-in-acute-respiratory-failure-patients
#20
Claudio Enrico Mazzucco, Andrea Marchi, Vlasta Bari, Beatrice De Maria, Stefano Guzzetti, Ferdinando Raimondi, Emanuele Catena, Davide Ottolina, Carla Amadio, Silvio Cravero, Tommaso Fossali, Riccardo Colombo, Alberto Porta
Cardioventilatory phase synchronization was studied in ten critically ill patients admitted in intensive care unit (ICU) for acute respiratory failure under two mechanical ventilatory modes: (i) pressure controlled ventilation (PCV); (ii) pressure support ventilation (PSV). The two modalities were administered to the same patient in different times in a random order. Cardioventilatory phase interactions were typified by plotting the relative position of a heartbeat, detected from the electrocardiogram and collected in n groups, within m ventilatory cycles as a function of the progressive cardiac beat number via the synchrogram...
May 2017: Physiological Measurement
keyword
keyword
1645
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"