keyword
MENU ▼
Read by QxMD icon Read
search

Ventilatory modes

keyword
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
#1
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
#2
Juyoung Lee, Han-Suk Kim, Young Hwa Jung, Chang Won Choi, Yong Hoon Jun
BACKGROUND: Severe bronchopulmonary dysplasia (BPD) often leads to prolonged mechanical ventilation lasting several months. Cyanotic episodes frequently occur in these patients, which necessitate 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 a tracheostomy and required mechanical ventilation for more than 6 months during a period of 6 years...
January 7, 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
#3
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...
January 4, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28043661/use-of-noninvasive-and-invasive-mechanical-ventilation-in-cardiogenic-shock-a-prospective-multicenter-study
#4
Mari Hongisto, Johan Lassus, Tuukka Tarvasmaki, Alessandro Sionis, Heli Tolppanen, Matias Greve Lindholm, Marek Banaszewski, John Parissis, Jindrich Spinar, Jose Silva-Cardoso, Valentina Carubelli, Salvatore Di Somma, Josep Masip, Veli-Pekka Harjola
BACKGROUND: Despite scarce data, invasive mechanical ventilation (MV) is widely recommended over non-invasive ventilation (NIV) for ventilatory support in cardiogenic shock (CS). We assessed the real-life use of different ventilation strategies in CS and their influence on outcome focusing on the use of NIV and MV. METHODS: 219 CS patients were categorized by the maximum intensity of ventilatory support they needed during the first 24h into MV (n=137; 63%) , NIV (n=26; 12%), and supplementary oxygen (n=56; 26%) groups...
December 27, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/28000205/early-severe-acute-respiratory-distress-syndrome-what-s-going-on-part-ii-controlled-vs-spontaneous-ventilation
#5
Fabrice Petitjeans, Cyrille Pichot, Marco Ghignone, Luc Quintin
The second part of this overview on early severe ARDS delineates the pros and cons of the following: a) controlled mechanical ventilation (CMV: lowered oxygen consumption and perfect patient-to-ventilator synchrony), to be used during acute cardio-ventilatory distress in order to "buy time" and correct circulatory insufficiency and metabolic defects (acidosis, etc.); b) spontaneous ventilation (SV: improved venous return, lowered intrathoracic pressure, absence of muscle atrophy). Given a stabilized early severe ARDS, as soon as the overall clinical situation improves, spontaneous ventilation will be used with the following stringent conditionalities: upfront circulatory optimization, upright positioning, lowered VO2, lowered acidotic and hypercapnic drives, sedation without ventilatory depression and without lowered muscular tone, as well as high PEEP (titrated on transpulmonary pressure, or as a second best: "trial"-PEEP) with spontaneous ventilation + pressure support (or newer modes of ventilation)...
2016: Anaesthesiology Intensive Therapy
https://www.readbyqxmd.com/read/28000204/early-severe-acute-respiratory-distress-syndrome-what-s-going-on-part-i-pathophysiology
#6
Fabrice Petitjeans, Cyrille Pichot, Marco Ghignone, Luc Quintin
Severe acute respiratory distress syndrome (ARDS, PaO₂/FiO₂ < 100 on PEEP ≥ 5 cm H₂O) is treated using controlled mechanical ventilation (CMV), recently combined with muscle relaxation for 48 h and prone positioning. While the amplitude of tidal volume appears set < 6 mL kg⁻¹, the level of positive end-expiratory pressure (PEEP) remains controversial. This overview summarizes several salient points, namely: a) ARDS is an oxygenation defect: consolidation/ difuse alveolar damage is reversed by PEEP and/or prone positioning, at least during the early phase of ARDS b) ARDS is a dynamic disease and partially iatrogenic...
2016: Anaesthesiology Intensive Therapy
https://www.readbyqxmd.com/read/27932555/mouthpiece-ventilation-and-complementary-techniques-in-patients-with-neuromuscular-disease-a-brief-clinical-review-and-update
#7
Tiago Pinto, Michelle Chatwin, Paolo Banfi, Joao Carlos Winck, Antonello Nicolini
Noninvasive ventilatory support (NVS) is sometimes reported as suboptimal in patients with neuromuscular disease (NMD). The reasons for this include inadequate ventilator settings and/or lack of interface tolerance. NVS has been used for many years in patients with NMD disorders as a viable alternative to continuous ventilatory support via a tracheostomy tube. The mouthpiece ventilation (MPV) is a ventilatory mode that is used as daytime ventilatory support in combination with other ventilatory modalities and interfaces for nocturnal NVS...
December 8, 2016: Chronic Respiratory Disease
https://www.readbyqxmd.com/read/27849235/randomized-controlled-trial-comparing-nasal-intermittent-positive-pressure-ventilation-and-nasal-continuous-positive-airway-pressure-in-premature-infants-after-tracheal-extubation
#8
Daniela Franco Rizzo Komatsu, Edna Maria de Albuquerque Diniz, Alexandre Archanjo Ferraro, Maria Esther Jurvest Rivero Ceccon, Flávio Adolfo Costa Vaz
Objective: To analyze the frequency of extubation failure in premature infants using conventional mechanical ventilation (MV) after extubation in groups subjected to nasal intermittent positive pressure ventilation (nIPPV) and continuous positive airway pressure (nCPAP). Method: Seventy-two premature infants with respiratory failure were studied, with a gestational age (GA) ≤ 36 weeks and birth weight (BW) > 750 g, who required tracheal intubation and mechanical ventilation...
September 2016: Revista da Associação Médica Brasileira
https://www.readbyqxmd.com/read/27842747/patient-ventilator-interactions
#9
REVIEW
Daniel Gilstrap, John Davies
Ventilatory muscle fatigue is a reversible loss of the ability to generate force or velocity of contraction in response to increased elastic and resistive loads. Mechanical ventilation should provide support without imposing additional loads from the ventilator (dys-synchrony). Interactive breaths optimize this relationship but require that patient effort and the ventilator response be synchronous during breath initiation, flow delivery, and termination. Proper delivery considers all 3 phases and uses clinical data, ventilator graphics, and sometimes a trial-and-error approach to optimize patient-ventilator interactions...
December 2016: Clinics in Chest Medicine
https://www.readbyqxmd.com/read/27821162/physiological-effects-of-invasive-ventilation-with-neurally-adjusted-ventilatory-assist-nava-in-a-crossover-study
#10
Jean-Michel Liet, François Barrière, Bénédicte Gaillard-Le Roux, Pierre Bourgoin, Arnaud Legrand, Nicolas Joram
BACKGROUND: Neurally Adjusted Ventilatory Assist (NAVA) is a mode of assisted mechanical ventilation that delivers inspiratory pressure proportionally to the electrical activity of the diaphragm. To date, no pediatric study has focused on the effects of NAVA on hemodynamic parameters. This physiologic study with a randomized cross-over design compared hemodynamic parameters when NAVA or conventional ventilation (CV) was applied. METHODS: After a baseline period, infants received NAVA and CV in a randomized order during two consecutive 30-min periods...
November 8, 2016: BMC Pediatrics
https://www.readbyqxmd.com/read/27794079/volume-targeted-versus-pressure-limited-noninvasive-ventilation-in-subjects-with-acute-hypercapnic-respiratory-failure-a-multicenter-randomized-controlled-trial
#11
Zhixin Cao, Zujin Luo, Anna Hou, Qingrong Nie, Baoyuan Xie, Xiaojie An, Zifen Wan, Xianwei Ye, Yanju Xu, Xisheng Chen, Honghai Zhang, Zhenyang Xu, Jinxiang Wang, Fucheng An, Pengfei Li, Chunxiao Yu, Yandong Liang, Yongxiang Zhang, Yingmin Ma
BACKGROUND: Volume-targeted noninvasive ventilation (VT-NIV), a hybrid mode that delivers a preset target tidal volume (VT) through the automated adjustment of pressure support, could guarantee a relatively constant target VT over pressure-limited noninvasive ventilation (PL-NIV) with fixed-level pressure support. Whether VT-NIV is more effective in improving ventilatory status in subjects with acute hypercapnic respiratory failure (AHRF) remains unclear. Our aim was to verify whether, in comparison with PL-NIV, VT-NIV would be more effective in correcting hypercapnia, hence reducing the need for intubation and improving survival in subjects with AHRF...
November 2016: Respiratory Care
https://www.readbyqxmd.com/read/27748627/partial-neuromuscular-blockade-during-partial-ventilatory-support-in-sedated-patients-with-high-tidal-volumes
#12
Jonne Doorduin, Joeke L Nollet, Lisanne H Roesthuis, Hieronymus W H van Hees, Laurent J Brochard, Christer A Sinderby, Johannes G van der Hoeven, Leo M A Heunks
RATIONALE: Controlled mechanical ventilation is used to deliver lung-protective ventilation in patients with acute respiratory distress syndrome. Despite recognized benefits, such as preserved diaphragm activity, partial support ventilation modes may be incompatible with lung-protective ventilation due to high tidal volume and high transpulmonary pressure. As an alternative to high dose sedatives and controlled mechanical ventilation, pharmacologically induced neuromechanical uncoupling of the diaphragm should facilitate lung-protective ventilation under partial support modes...
October 17, 2016: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/27731850/a-critical-review-of-mechanical-ventilation-virtual-simulators-is-it-time-to-use-them
#13
Juliana Arcanjo Lino, Gabriela Carvalho Gomes, Nancy Delma Silva Vega Canjura Sousa, Andrea K Carvalho, Marcelo Emanoel Bezerra Diniz, Antonio Brazil Viana Junior, Marcelo Alcantara Holanda
BACKGROUND: Teaching mechanical ventilation at the bedside with real patients is difficult with many logistic limitations. Mechanical ventilators virtual simulators (MVVS) may have the potential to facilitate mechanical ventilation (MV) training by allowing Web-based virtual simulation. OBJECTIVE: We aimed to identify and describe the current available MVVS, to compare the usability of their interfaces as a teaching tool and to review the literature on validation studies...
June 14, 2016: JMIR Medical Education
https://www.readbyqxmd.com/read/27686347/neurally-adjusted-ventilatory-assist-as-an-alternative-to-pressure-support-ventilation-in-adults-a-french-multicentre-randomized-trial
#14
A Demoule, M Clavel, C Rolland-Debord, S Perbet, N Terzi, A Kouatchet, F Wallet, H Roze, F Vargas, C Guerin, J Dellamonica, S Jaber, L Brochard, T Similowski
PURPOSE: Neurally adjusted ventilatory assist (NAVA) is a ventilatory mode that tailors the level of assistance delivered by the ventilator to the electromyographic activity of the diaphragm. The objective of this study was to compare NAVA and pressure support ventilation (PSV) in the early phase of weaning from mechanical ventilation. METHODS: A multicentre randomized controlled trial of 128 intubated adults recovering from acute respiratory failure was conducted in 11 intensive care units...
November 2016: Intensive Care Medicine
https://www.readbyqxmd.com/read/27643857/tidal-volume-delivery-and-endotracheal-tube-leak-during-cardiopulmonary-resuscitation-in-intubated-newborn-piglets-with-hypoxic-cardiac-arrest-exposed-to-different-modes-of-ventilatory-support
#15
Marc R Mendler, Claudia Weber, Mohammad A Hassan, Li Huang, Benjamin Mayer, Helmut D Hummler
BACKGROUND: There are few data available on the interaction of inflations, chest compressions (CC), and delivery of tidal volumes in newborn infants undergoing resuscitation in the presence of endotracheal tube (ET) leaks. OBJECTIVES: To determine the effects of different respiratory support strategies along with CC on changes in tidal volume and ET leaks in hypoxic newborn piglets with cardiac arrest. METHODS: Asphyxiated newborn piglets, intubated with weight-adapted uncuffed ET, were randomized into three groups and resuscitated according to ILCOR 2010 guidelines: (1) T-piece resuscitator (TPR) group = peak inspiratory pressure (PIP)/positive end-expiratory pressure (PEEP) 25/5 cm H2O, rate 30/min, inflations interposed between CC (3:1 ratio); (2) self- inflating bag (SIB) group = PIP 25 cm H2O without PEEP, rate 30/min, inflations interposed between CC (3:1 ratio), and (3) ventilator group = PIP/PEEP of 25/5 cm H2O, rate 30/min...
September 20, 2016: Neonatology
https://www.readbyqxmd.com/read/27629375/comparing-changing-neurally-adjusted-ventilatory-assist-nava-levels-in-intubated-and-recently-extubated-neonates
#16
B LoVerde, K S Firestone, H M Stein
OBJECTIVE: Neurally adjusted ventilatory assist (NAVA) is a mode of mechanical ventilation that delivers ventilatory support in synchrony to the patient's respiratory needs using NAVA level, a proportionality constant that converts the electrical activity of the diaphragm (Edi) into a peak pressure (PIP). Recent published studies suggest that neonates can control the delivered ventilatory support through neural feedback. Systematically increasing the NAVA level initially increases the PIP while maintaining a constant Edi until an inflection point or breakpoint (BrP) is reached, at which time the PIP plateaus and the Edi signal decreases...
December 2016: Journal of Perinatology: Official Journal of the California Perinatal Association
https://www.readbyqxmd.com/read/27623133/impact-of-targeted-volume-ventilation-on-pulmonary-dynamics-in-preterm-infants-with-respiratory-distress-syndrome
#17
Senem Alkan Ozdemir, Esra Arun Ozer, Ozkan Ilhan, Sumer Sutcuoglu
BACKGROUND: Mechanical ventilation is an essential therapy in the treatment of respiratory failure in preterm infants. However, optimal ventilation strategy continues to be difficult to define. OBJECTIVE: To compare the effects of volume guarantee (VG) combined with intermittent mandatory ventilation (SIMV) and VG combined with pressure support ventilation (PSV) on the pulmonary mechanics and short term prognosis in preterm infants with respiratory distress syndrome...
September 13, 2016: Pediatric Pulmonology
https://www.readbyqxmd.com/read/27598383/effect-of-tidal-volume-size-and-its-delivery-mode-on-patient-ventilator-dyssynchrony
#18
Juan B Figueroa-Casas, Ricardo Montoya
RATIONALE: Although increasingly recommended, compliance with low Vt ventilation remains suboptimal. Dyssynchrony induced by low Vts may be a reason for it. OBJECTIVES: To determine the effect of Vt size, and of the ventilator mode used for its delivery (volume vs. pressure control), on the magnitude of patient-ventilator dyssynchrony in patients with or at risk for acute respiratory distress syndrome. METHODS: Nineteen mechanically ventilated patients underwent six consecutive ventilatory conditions: three on volume assist-control (VC) mode, each with set Vt of 6, 7...
December 2016: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/27526104/leakage-in-nasal-high-frequency-oscillatory-ventilation-improves-carbon-dioxide-clearance-a-bench-study
#19
Daniel Klotz, Christoph Schaefer, Dimitra Stavropoulou, Hans Fuchs, Stefan Schumann
OBJECTIVE: Nasal high frequency oscillatory ventilation (nHFOV) is a promising mode of non-invasive neonatal respiratory support. To combine the effects of nasal continuous positive airway pressure (nCPAP) and high frequency oscillatory ventilation, an oscillatory pressure waveform is superposed to a nCPAP via a nasal or nasopharyngeal interface. nHFOV has been described to facilitate carbon dioxide (CO2 ) elimination compared to nCPAP. The influence of unintended leakage on CO2 elimination has not been investigated in nHFOV before...
August 15, 2016: Pediatric Pulmonology
https://www.readbyqxmd.com/read/27522580/automatic-detection-of-ventilatory-modes-during-invasive-mechanical-ventilation
#20
Gastón Murias, Jaume Montanyà, Encarna Chacón, Anna Estruga, Carles Subirà, Rafael Fernández, Bernat Sales, Candelaria de Haro, Josefina López-Aguilar, Umberto Lucangelo, Jesús Villar, Robert M Kacmarek, Lluís Blanch
BACKGROUND: Expert systems can help alleviate problems related to the shortage of human resources in critical care, offering expert advice in complex situations. Expert systems use contextual information to provide advice to staff. In mechanical ventilation, it is crucial for an expert system to be able to determine the ventilatory mode in use. Different manufacturers have assigned different names to similar or even identical ventilatory modes so an expert system should be able to detect the ventilatory mode...
2016: Critical Care: the Official Journal of the Critical Care Forum
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"