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Yannopoulos Demetris - - 2010
OBJECTIVES: To evaluate the effect of no assisted ventilation cardiopulmonary resuscitation on neurologically intact survival compared with ten positive pressure ventilations/minute cardiopulmonary resuscitation in a pig model of cardiac arrest. DESIGN: Prospective randomized animal study. SETTING: Animal laboratory. SUBJECTS: Sixteen female intubated pigs (25.2 +/- 2.1 kg) anesthetized with propofol. ...
Terragni Pier Paolo - - 2010
The extracorporeal carbon dioxide removal (ECCO(2)R) concept, used as an integrated tool with conventional ventilation, plays a role in adjusting respiratory acidosis consequent to tidal volume (Vt) reduction in a protective ventilation setting. This concept arises from the extracorporeal membrane oxygenation (ECMO) experience. Kolobow and Gattinoni were the first to ...
Lindström Veronica - - 2010
For healthcare providers in the prehospital setting, bag-valve mask (BVM) ventilation could be as efficacious and safe as endotracheal intubation. To facilitate the evaluation of efficacious ventilation, capnographs have been further developed into small and convenient devices able to provide end- tidal carbon dioxide (ETCO2). The aim of this study ...
Gama de Abreu Marcelo - - 2010
There is an increasing interest in biphasic positive airway pressure with spontaneous breathing (BIPAP+SBmean), which is a combination of time-cycled controlled breaths at two levels of continuous positive airway pressure (BIPAP+SBcontrolled) and non-assisted spontaneous breathing (BIPAP+SBspont), in the early phase of acute lung injury (ALI). However, pressure support ventilation (PSV) ...
Shoham Allen B - - 2010
Many patients with end-stage cardiomyopathy are now being implanted with Total Artificial Hearts (TAHs). We have observed individual cases of post-operative mechanical ventilator autocycling with a flow trigger, and subsequent loss of autocycling after switching to a pressure trigger. These observations prompted us to do a retrospective review of all ...
Allison Beth J - - 2010
The onset of ventilation at birth decreases pulmonary vascular resistance (PVR) resulting in a large increase in pulmonary blood flow (PBF). As the large cross sectional area of the pulmonary vascular bed develops late in gestation, we have investigated whether the ventilation-induced increase in PBF is reduced in immature lungs. ...
Namdar Thomas - - 2010
In patients with major burn injuries mechanical ventilation is often required for longer periods. Tracheostomy (TS) plays an integral role in airway management. We investigated the effect of TS on ventilation parameters within 8 hours after TS. A retrospective analysis of severely burned patients admitted to the burn unit of ...
Hermans Greet - - 2010
Respiratory muscle weakness is an important risk factor for delayed weaning. Animal data show that mechanical ventilation itself can cause atrophy and weakness of the diaphragm, called ventilator-induced diaphragmatic dysfunction (VIDD). Transdiaphragmatic pressure after magnetic stimulation (TwPdi BAMPS) allows evaluation of diaphragm strength. We aimed to evaluate the repeatability of ...
Schmölzer Georg M - - 2010
A respiratory function monitor is routinely used in neonatal intensive care units to continuously measure and display airway pressures, tidal volume and leak during ventilation. During positive pressure ventilation in the delivery room, clinical signs are used to monitor the effectiveness of ventilation. The additional use of a respiratory function ...
Montes Félix R - - 2010
The efficacy of protective ventilation in acute lung injury has validated its use in the operating room for patients undergoing thoracic surgery with one-lung ventilation (OLV). The purpose of this study was to investigate the effects of two different modes of ventilation using low tidal volumes: pressure controlled ventilation (PCV) ...
Zoremba M - - 2010
Obesity impairs peri-operative lung function. To evaluate the impact of pressure support ventilation vs pressure controlled ventilation in moderately obese adults upon early postoperative lung function, we randomly assigned 68 moderately obese patients (body mass index 25-35 kg x m(-2)) undergoing minor surgery to receive intra-operative ventilation either with pressure ...
Cuvelier Antoine - - 2010
Ineffective inspiratory triggering efforts are a major cause of poor patient-ventilator interactions during mechanical ventilation, but their routine identification requires the insertion of an esophageal catheter. We developed a mathematical analysis of ventilatory tracings recorded under noninvasive pressure ventilation in order to identify ineffective triggering efforts and their consequences without ...
Yoshida Takeshi - - 2009
BACKGROUND: In this study, we sought to determine which mode, airway pressure release ventilation (APRV) or pressure support ventilation (PSV), decreases atelectasis more in patients with acute lung injury/acute respiratory distress syndrome (ARDS). METHODS: This was a retrospective study in the intensive care unit. Between 2006 and 2007, we identified ...
Liu Liangji - - 2009
Airway pressure release ventilation (APRV) is a ventilatory mode that allows unsupported spontaneous breathing at any phase of the ventilatory cycle with high mean airway pressures. We hypothesized that use of APRV might produce potential beneficial effects on oxygenation, reducing mortality in patients with severe acute respiratory distress syndrome (ARDS) ...
Singer Benjamin D - - 2009
Invasive mechanical ventilation is a lifesaving intervention for patients with respiratory failure. The most commonly used modes of mechanical ventilation are assist-control, synchronized intermittent mandatory ventilation, and pressure support ventilation. When employed as a diagnostic tool, the ventilator provides data on the static compliance of the respiratory system and airway ...
Schulzke Sven M - - 2009
Biphasic positive airway pressure (BiLevel) ventilation allows utilization of two alternating positive end-expiratory pressures (PEEP) while permitting unrestricted spontaneous breathing with superimposed synchronized pressure support. We aimed to compare whether BiLevel versus assist-control (A-C) ventilation provides effective gas exchange and reduces severity of early lung injury in preterm lambs. Preterm ...
Hong Jeong-Yeon - - 2009
PURPOSE: The purpose of this study was to evaluate the effects of thoracic epidural analgesia (TEA) on intraoperative ventilation/oxygenation and postoperative pulmonary complications in robot-assisted laparoscopic radical prostatectomy requiring high-pressure pneumoperitoneum and the extreme head-down position. METHODS: Seventy-two patients (age range, 58-76 years) scheduled for elective robot-assisted laparoscopic radical prostatectomy ...
Seet Mustafa M - - 2009
BACKGROUND: Mask ventilation of apnoeic patients may be associated with alveolar hypoventilation, hyperventilation and gastric insufflation, which may be affected by the mode of ventilation during induction of anaesthesia. This study is to compare the effect of three modes of positive pressure mask ventilation during induction of anaesthesia regarding ventilatory ...
Nagai S - - 2009
Respiratory complications often develop in liver transplant recipients, and appropriate respiratory management is crucial to improve patient outcome. To evaluate the clinical usefulness of noninvasive positive pressure ventilation (NPPV) in liver transplant recipients, we established application criteria for NPPV in respiratory management in these patients, as follows: (1) arterial oxygen ...
Mireles-Cabodevila Eduardo - - 2009
BACKGROUND: Adaptive pressure control is a mode of mechanical ventilation where inflation pressure is adjusted by the ventilator to achieve a target tidal volume (VT). This means that as patient effort increases, inflation pressure is reduced, which may or may not be clinically appropriate. The purpose of this study was ...
Luque A - - 2009
Mechanical ventilation has been associated with organ failure in patients with acute respiratory distress syndrome. The present study examines the effects of tidal volume (V(T)) on renal function using two V T values (8 and 27 mL/kg) in anesthetized, paralyzed and mechanically ventilated male Wistar rats. Animals were randomized into ...
Loeliger Michelle - - 2009
High-frequency oscillatory ventilation (HFOV) may improve pulmonary outcome in very preterm infants, but the effects on the brain are largely unknown. We hypothesized that early prolonged HFOV compared with low volume positive pressure ventilation (LV-PPV) would not increase the risk of delayed brain growth or injury in a primate model ...
Chakravarthy Murali - - 2009
INTRODUCTION: Transcutaneous measurement of gases depends on the degree of skin perfusion. Mechanical ventilation causes alteration in the peripheral perfusion. The aim of this prospective observational study was to assess change in the accuracy of interchangeability of arterial blood gases with those obtained transcutaneously at various phases of mechanical ventilation ...
Schiller Ofer - - 2009
The aim of the study was to describe our experience with bi-level positive airway pressure (BiPAP) ventilation in oncology children with acute respiratory failure, hospitalized in a single tertiary pediatric tertiary center. This was a retrospective cohort study of all pediatric oncology patients in our center admitted to the intensive ...
Bhandari V - - 2010
Various modes of nasal continuous positive airway pressure have been well established as a means of providing non-invasive respiratory support in the neonate. Recent reports suggest that nasal intermittent positive pressure ventilation may offer a better alternative, as a mode of non-invasive ventilation. This article will critically review the literature ...
Wald Martin - - 2010
In certain settings of conventional continuous positive airway pressure (CPAP) application, the ventilator may not be able to detect dislodgement of the prongs. This occurs especially in settings with high flow and small prongs. We investigated the relation between ventilator flows, size of the nasal prongs, and pressure generated within ...
Kiraly Nicholas J - - 2009
In newborn infants, closed endotracheal tube (ETT) suction may reduce associated adverse effects, but it is not clear whether ventilation is maintained during the procedure. We aimed to determine the effect of ETT size, catheter size, and suction pressure on ventilation parameters measured distal to the ETT. Suction was performed ...
Simão Mariana de Almeida Mde - - 2009
CONTEXT: Many patients in use of mechanical ventilation show clinical complications due to tracheal aspiration. Assessment and early methods are necessary, so that preventive and safety measures apply to this patients. OBJECTIVE: To study the incidence of tracheal aspiration of saliva in tracheotomized patients treated in intensive care unit using ...
Chittawatanarat Kaweesak - - 2009
OBJECTIVE: Compare the effectiveness between spontaneous breathing trial with low-pressure support protocol and liberal or non-protocol directed method. MATERIAL AND METHOD: The authors conducted a retrospective study involving 577 patients who were arranged and appropriate to weaning from mechanical ventilation on general surgical intensive care unit between July 1, 2004 ...
Brown Judy E - - 2009
OBJECTIVE: The primary objective of this study was to assess the feasibility of noninvasive mechanical ventilation (NIV) in cats. The secondary objective was to determine whether cardiovascular parameters and anesthetic drug requirements associated with noninvasive ventilation differ from those associated with invasive ventilation. DESIGN: Randomized, cross-over design. SETTING: A research ...
Hirani Amyn - - 2009
BACKGROUND: Airway pressure-release ventilation (APRV) is a novel mode of positive-pressure ventilation that has several advantages over low-tidal-volume, assist-control ventilation in patients with acute respiratory distress syndrome, specifically, lower airway pressures, lower minute ventilation, minimal effects on cardio-circulatory function, ability to spontaneously breathe throughout the entire ventilatory cycle, and decreased ...
Flint N J - - 2009
BACKGROUND: Cannula cricothyroidotomy is recommended in recent guidelines as a rescue intervention in the 'cannot-intubate cannot-ventilate' scenario. Several methods of providing ventilation via a cannula cricothyroidotomy have been described, but there are no data comparing these methods and using cannulae of differing diameters. METHODS: Using a bench-top trachea-lung model (comprising ...
Beda Alessandro - - 2010
PURPOSE: There is growing interest in the use of both variable and pressure-controlled ventilation (PCV). The combination of these approaches as "noisy PCV" requires adaptation of the mechanical ventilator to the respiratory system mechanics. Thus, we developed and evaluated a new control system based on the least-mean-squares adaptive approach, which ...
Heunks Leo M A - - 2010
PURPOSE: Bronchoscopy is an indispensable tool for invasive pulmonary evaluation with high diagnostic yield and low incidence of major complications. However, hypoxemia increases the risk of complications, in particular after bronchoalveolar lavage. Non-invasive positive pressure ventilation may prevent hypoxemia associated with bronchoalveolar lavage. The purpose of this study is to ...
Robert Raymond - - 2010
Total-liquid ventilation (TLV) is an innovative experimental method of mechanical-assisted ventilation in which lungs are totally filled and then ventilated with a tidal volume of perfluorochemical liquid by using a dedicated liquid ventilator. Such a novel medical device must resemble other conventional ventilators: it must be able to conduct controlled-pressure ...
Schumacher Jan - - 2009
Bag-valve-mask ventilation is a key component of life support, but only one handheld resuscitator is designed to operate in contaminated or toxic atmospheres. After Institutional Review Board approval, the efficacy of this device was evaluated. The distal trachea of a Laerdal Airway Management Trainer was connected to a mechanical Draeger ...
Blakeman Thomas C - - 2009
BACKGROUND: Resource planning is essential for successful transport of the mechanically ventilated patient. Mechanically ventilated patients require adequate oxygen supplies to ensure transport is completed without incident. The LTV-1000 portable ventilator utilizes a program to calculate oxygen cylinder duration, based on cylinder size, fraction of inspired oxygen (F(IO(2))), and current ...
Donn Steven M - - 2009
For more than 40 years conventional mechanical ventilation has been used for the treatment of neonatal respiratory failure. Until relatively recently, this was accomplished with time-cycled pressure-limited ventilation, using intermittent mandatory ventilation. Earlier attempts at volume-targeted ventilation were largely ineffective because of technological limitations. The advent of microprocessor-based devices gives ...
Arbour Richard - - 2009
Brain death is manifested by a flaccid, areflexic patient on assessment of brain function with fixed and dilated pupils at midpoint, loss of consciousness, no response to stimulation, loss of brainstem reflexes, and apnea. A lesion or clinical state responsible for the loss of consciousness must be found. An integral ...
O'Reilly Megan - - 2009
Children and adults who were mechanically ventilated following preterm birth are at increased risk of reduced lung function, suggesting small airway dysfunction. We hypothesized that short periods of mechanical ventilation of very immature lungs can induce persistent bronchiolar remodeling that may adversely affect later lung function. Our objectives were to ...
Louis B - - 2010
Most pressure-support devices use a single circuit with an exhalation port integrated in the mask. The aim of the current study was to compare the effects of masks having different manufacturer-inserted leaks on ventilator performance. We simulated chronic obstructive pulmonary disease and restrictive disease. Four ventilators (VENTImotion (Weinmann, Hamburg, Germany), ...
Park Sung Yong - - 2010
OBJECTIVE: Hypoxemia is a common problem of 1-lung ventilation. Arterial oxygenation progressively decreases after 1-lung ventilation. The surgical position influences the shunt and arterial oxygenation. Therefore we evaluated the effect of head-up tilt on intrapulmonary shunt and oxygenation during 1-lung ventilation in the lateral decubitus position. METHODS: Twenty patients requiring ...
Crisafulli Ernesto - - 2009
The aim of this short-term, single-blind, randomized, crossover study was to evaluate night-time efficacy of and compliance and physiological responses to average volume assured pressure support (AVAPS) versus pressure support (PS) ventilation. AVAPS or PS ventilation was delivered to nine stable hypercapnic COPD patients via a mask over two 5-day ...
Yuh Yeong-Seng - - 2009
Nitric oxide (NO), which is produced in the lower airways, diffuses from cells into the air space and can be measured in exhaled air. The influence of high frequency oscillatory ventilation on the production of exhaled NO (eNO) has not been thoroughly studied. The objectives of this study are to ...
Bailey T M - - 2009
In parts of the world where supplies of oxygen and electricity are erratic, ventilating patients' lungs can be problematic. Should the electricity supply fail, gas driven ventilators have an advantage as they can continue functioning. However, many are extravagant in their requirement for the driving gas. The Glostavent ventilator was ...
Bikker Ido G - - 2009
PURPOSE: Monitoring end-expiratory lung volume (EELV) is a valuable tool to optimize respiratory settings that could be of particular importance in mechanically ventilated pediatric patients. We evaluated the feasibility and precision of an intensive care unit (ICU) ventilator with an in-built nitrogen washout/washin technique in mechanically ventilated pediatric patients. METHODS: ...
Burns Karen E A - - 2009
PURPOSE: To determine the stated practices of clinicians in weaning critically ill adults from invasive ventilation. METHODS: We conducted a cross-sectional, self-administered postal survey of Critical Care physicians and respiratory therapists (RTs) in leadership roles at Canadian teaching hospitals. We identified respondents using electronic mail and telephone correspondence. We used ...
Messier Stephen E - - 2009
The Sensormedics 3100A (Cardinal Health, Dublin, OH) (HFOV) and the Bronchotron (Percussionaire, Sandpoint, ID) (HFPV) are high-frequency ventilation devices used to support neonatal respiratory failure; however, a comparison of the devices, with respect to gas exchange at similar ventilator settings, has not been previously studied. Thus, we compared the ability ...
De Luca D - - 2009
OBJECTIVES: Few data exist about patient-triggered ventilation techniques in neonatal critical care. Our aim was to compare pressure-limited synchronised intermittent positive pressure (or assist/control) ventilation (sIPPV) in the classical time-cycled (TC-sIPPV) mode against flow-cycled (FC-sIPPV) modality. In this latter, typical sIPPV full respiratory support is provided but both the initiation ...
Mireles-Cabodevila Eduardo - - 2009
Newer ventilators can be set to modes other than the pressure-control and volume-control modes of older machines. In this paper, the authors review several of these alternative modes (adaptive pressure control, adaptive support ventilation, proportional assist ventilation, airway pressure-release ventilation, biphasic positive airway pressure, and high-frequency oscillatory ventilation), explaining how ...
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