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Results 101 - 150 of 1893
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Parke R - - 2009
BACKGROUND: The aim of this prospective study was to determine whether a level of positive airway pressure was generated in participants receiving nasal high flow (NHF) delivered by the Optiflow system (Fisher and Paykel Healthcare Ltd, Auckland, New Zealand) in a cardiothoracic and vascular intensive care unit (ICU). METHODS: Nasopharyngeal ...
Hill Kylie - - 2010
Answers were sought to the following question: Are techniques, applied predominantly with the aim of clearing secretions from the airways, to patients during an acute exacerbation of chronic obstructive pulmonary disease (AECOPD), safe and effective? A systematic review was undertaken of studies that (i) were either randomized controlled or randomized ...
Sinha Aparna - - 2009
BACKGROUND: ProSeal LMA (PLMA), one of the advanced supraglottic devices has been successfully used to provide both spontaneous and controlled ventilation in children with upper respiratory tract infection (URTI). URTI does not imply restriction of disease to upper respiratory tract; it has been shown to produce pulmonary dysfunction. PEEP has ...
Bellone Andrea - - 2009
OBJECTIVE: The objective of the study was to compare the effect of continuous positive airway pressure (CPAP) in patients with acute cardiogenic pulmonary edema (ACPE) with preserved or impaired left ventricular systolic function with regard to resolution time. METHODS: In a prospective, preliminary observational cohort study, 18 patients with preserved ...
Shimada Yuichi J - - 2009
We report a case of hypertrophic cardiomyopathy with recurrent ventricular tachycardia that resolved after initiating continuous positive airway pressure therapy.
Ayuse Takao - - 2009
Upper airway patency may be compromised during sleep and anesthesia by either anatomical alterations (mechanical properties) or disturbances in the neural control (compensatory neuromuscular responses). The pathophysiology of upper airway obstruction during anesthesia may differ between men and women. Recently, we reported that the upper airway mechanical properties were comparable ...
Jose Riya - - 2012
Background: Hypoxemia complicating care during ventilation is a common problem. Objective: To describe an unusual cause of hypoxemia with fluctuating airway pressures in an invasively ventilated, organophosphate-poisoned patient. Case Report: A 40-year-old man being treated for organophosphate poisoning developed episodes of high airway pressure during mechanical ventilation. These episodes initially ...
Majumdar Arnab - - 2009
Airways that collapse during deflation generate a crackle sound when they reopen during subsequent reinflation. Since each crackle is associated with the reopening of a collapsed airway, the likelihood of an airway to be a crackle source is identical to its vulnerability to collapse. To investigate this vulnerability of airways ...
Cavus Erol - - 2009
BACKGROUND AND OBJECTIVE: EasyTube (EZT), ProSeal laryngeal mask airway (PLMA), and Laryngeal tube S II (LTS II) have recently been introduced as supraglottic airway devices and have been proposed as emergency airway alternatives. The purpose of this study was to compare the performance of the three devices, if used by ...
Lee A K Y - - 2009
The Laryngeal Mask Airway Supreme (LMAS) is a new, single-use laryngeal mask airway with gastric access. We conducted a randomised controlled study comparing the LMAS with the reusable ProSeal Laryngeal Mask Airway (PLMA) in 70 patients undergoing general anaesthesia with paralysis for gynaecological laparoscopic surgery. Our primary outcome measure was ...
Hertegonne Katrien - - 2010
In moderate to severe obstructive sleep apnea syndrome (OSAS), the use of Continuous Positive Airway Pressure (CPAP) is the gold standard therapy. In the last decade, new technologies such as auto-adjustable CPAP (APAP) have been promoted as having an added advantage over CPAP, because of their ability to adapt the ...
Hiel Deline - - 2009
OBJECTIVE: Exposure in connection with cleaning piggeries induces airway inflammation. The aim of this study was to compare the health effects related to two different cleaning processes in a piggery. METHODS: In a cross-over study design, 12 subjects were randomly exposed for three hours during the cleaning of a piggery ...
Spentzas Thomas - - 2009
High-flow nasal cannula (HFNC) therapy is a treatment for respiratory distress in neonates and children. In the present study, we assessed its effectiveness, comfort, and possible mechanism of action. METHODS: We reviewed records of 46 patients treated with HFNC and estimated the modified COMFORT score (7 to 35 units), the ...
Torre-Bouscoulet Luis - - 2009
to analyze the agreement between effective CPAP-determined on the basis of a 7-night auto-adjusting positive airway pressure (APAP) trial at home with that obtained through 5 different predictive equations. Data were collected from consecutive CPAP-naive patients with OSA who underwent a 7-night non-attended home-setting APAP trial. The 95th percentile APAP ...
Ihra Gerald C - - 2009
BACKGROUND: High-frequency jet ventilation (HFJV) can lead to high-airway pressures under certain conditions. In this laboratory study, we evaluated the influence of the injector's position relative to a fixed airway obstruction on peak pressures in a tracheal-lung model. METHODS: We administered HFJV via a metal jet injector at varying distances ...
Ansell Thomas K - - 2009
BACKGROUND AND OBJECTIVE: In adults, respiratory movements, such as tidal and deep breaths, reduce airway smooth muscle force and cause bronchodilation. Evidence suggests that these beneficial effects of oscillatory strain do not occur in children, possibly because of reduced coupling of the airways to lung tissue or maturational differences in ...
Oliveira W - - 2009
Obstructive sleep apnoea (OSA) has been reported as a predictor of left ventricle (LV) diastolic dysfunction and left atrium (LA) remodelling. The aim of this study is to evaluate the impact of OSA treatment with a continuous positive airway pressure device (CPAP) on the LA volume and function, as well ...
Edwards Bradley A - - 2009
Continous positive airway pressure (CPAP) is used to treat infant respiratory distress syndrome and apnea of prematurity, but its mode of action is not fully understood. We hypothesised that CPAP increases lung volume and stabilises respiratory control by decreasing loop gain (LG). Experimentally induced periodic breathing (PB) in the lamb ...
Gray A J - - 2009
To determine whether non-invasive ventilation reduces mortality and whether there are important differences in outcome by treatment modality. Multicentre open prospective randomised controlled trial. Patients presenting with severe acute cardiogenic pulmonary oedema in 26 emergency departments in the UK. Inclusion criteria were age > 16 years, clinical diagnosis of acute ...
Hillman David R - - 2009
BACKGROUND: Upper airway collapsibility is known to increase under anesthesia. This study assessed how this increase in collapsibility evolves during slow Propofol induction and how it relates to anesthesia-induced changes in upper airway muscle activity and conscious state. METHODS: Nine healthy volunteers were studied. Anesthesia was induced with Propofol in ...
do Nascimento Renata Medeiros - - 2009
Continuous positive airway pressure (CPAP) with prongs is the ventilatory support most used in newborns. Nasal injuries are complications that may arise due to the prolonged use of this device. This study aimed to determine the frequency of nasal injuries in newborns through the use of continuous positive airway pressure ...
Murri Mora - - 2009
Sleep apnea-hypopnea syndrome (SAHS) is characterized by recurrent episodes of hypoxia/reoxygenation, which seems to promote oxidative stress. SAHS patients experience increases in hypertension, obesity, and dyslipidemia, and the oxidative state has been related to the genesis of these disorders. The purpose of this study was to examine the changes in ...
Craig Sonya - - 2009
Obstructive sleep apnoea (OSA) is associated with cardiovascular morbidity and may precipitate cardiac dysrhythmias. Uncontrolled reports suggest that continuous positive airway pressure (CPAP) may reduce dysrhythmia frequency and resting heart rate. We undertook a randomised controlled trial of therapeutic CPAP and compared with a subtherapeutic control which included an exploration ...
Sai Sunil Kishore M - - 2009
AIM: To determine whether early nasal intermittent positive pressure ventilation (NIPPV), in comparison to early continuous positive airway pressure (CPAP), can reduce the need for intubation and mechanical ventilation in preterm neonates with suspected respiratory distress syndrome (RDS). Methods: In this stratified open-label randomized controlled trial, neonates (28-34 weeks gestation) ...
Das Aneesa M - - 2009
Obstructive sleep apnea (OSA) is a common form of sleep-disordered breathing that occurs due to recurrent collapse of the upper airway with inspiration. Large epidemiologic studies have established that OSA is a risk factor for developing hypertension. The pathophysiologic mechanism of this relationship is due to the distinctive pattern of ...
Herbstreit Frank - - 2009
BACKGROUND: Residual neuromuscular blockade increases the risk to develop postoperative complications. The authors hypothesized that minimal neuromuscular blockade (train-of-four [TOF] ratio 0.5-1) increases upper airway collapsibility and impairs upper airway dilator muscle compensatory responses to negative pharyngeal pressure challenges. METHODS: Epiglottic and nasal mask pressures, genioglossus electromyogram, respiratory timing, and ...
Agarwal R - - 2009
INTRODUCTION: Noninvasive ventilation (NIV) with continuous positive airway pressure (CPAP) has been shown to decrease endotracheal intubation and mortality in patients with acute cardiogenic pulmonary oedema (ACPE). The Three Interventions in Cardiogenic Pulmonary Oedema showed no advantage of NIV over standard medical therapy. This meta-analysis is an update on the ...
Garcia Guilherme J M - - 2009
BACKGROUND: Interindividual variability in nasal filtration is significant due to interindividual differences in nasal anatomy and breathing rate. Two important consequences arise from this variation among humans. First, devices for nasal drug delivery may furnish quite different doses in the nasal passages of different individuals, leading to different responses to ...
Singh Ishwar - - 2009
Sixty ASA grade I & II adult patients of either sex were randomly assigned into two groups. Group I (n=30) for I-gel and Group P (n=30) for LMA - ProSeal. We assessed the airway sealing pressure, ease of insertion, success rate of insertion, ease of gastric tube placement, airway trauma ...
Micaglio M - - 2009
BACKGROUND: When compared with the Classic laryngeal mask airway (cLMA), the recently introduced ProSeal laryngeal mask airway (PLMA) has modified features to produce higher airway seal pressures and enable ventilation in circumstances where the cLMA might fail. The first neonatal size 1 PLMA recently became available. This study was designed ...
Hosten T - - 2009
BACKGROUND AND OBJECTIVE: The LMA-Supreme() (S-LMA()) is a new supraglottic airway device that presents combined features of flexibility, curved structure and single use and a different cuff structure. The purpose of this study was to compare the oropharyngeal leak pressures (OLP) of LMA-Proseal() (P-LMA()) and S-LMA(). METHODS: Sixty adult patients ...
Hui David S - - 2009
BACKGROUND: As part of our influenza pandemic preparedness, we studied the exhaled air dispersion distances and directions through two different face masks (Respironics; Murrysville, PA) attached to a human-patient simulator (HPS) during noninvasive positive-pressure ventilation (NPPV) in an isolation room with pressure of -5 Pa. METHODS: The HPS was positioned ...
Herff Holger - - 2009
BACKGROUND: The Smart Bag MO(R) is an adult flow-limited bag-valve device designed to reduce the risk of stomach inflation in an unprotected airway. Its properties in severe airway obstruction are as yet unknown. METHODS: In a bench model, we evaluated respiratory mechanics and delivered tidal volumes although ventilating at airway ...
Wallace C J - - 2009
Hyperinflation of the laryngeal mask airway cuff may exert high pressure on pharyngeal and laryngeal structures. In vitro data show that high intra cuff pressures may occur when inflated to only 30% of the manufacturer's recommended maximum inflation volume. We prospectively assessed the pressure volume curves of paediatric sized laryngeal ...
DiMarco Anthony F - - 2009
Evaluation of the capacity of lower thoracic spinal cord stimulation (SCS) to activate the expiratory muscles and generate large airway pressures and high peak airflows characteristic of cough, in subjects with tetraplegia. Clinical trial. Inpatient hospital setting for electrode insertion; outpatient setting for measurement of respiratory pressures; home setting for ...
Rieder Marcelo de Mello Mde - - 2009
To investigate the feasibility and the cardiorespiratory effects of using positive expiratory airway pressure, a physiotherapeutic tool, in comparison with a T-tube, to wean patients from mechanical ventilation. A prospective, randomized, cross-over study. Two intensive care units. We evaluated forty patients who met weaning criteria and had been mechanically-ventilated for ...
Dernaika Tarek A - - 2009
To examine the long-term effects of continuous positive airway pressure (CPAP) therapy on blood pressure (BP) in patients with obstructive sleep apnea and resistant hypertension. Study subjects were 98 patients with obstructive sleep apnea syndrome and hypertension who had 3 or more documented daytime BP measurements taken within 3 months ...
Ferland A - - 2009
The aim of the present study was to compare the efficacy of 1 yr of sibutramine-induced weight loss versus continuous positive airway pressure (CPAP) treatment on sleep-disordered breathing, cardiac autonomic function and systemic blood pressure in obese patients with obstructive sleep apnoea. Subjects with a body mass index of > ...
Neligan Patrick J - - 2009
BACKGROUND: Morbidly obese patients are at elevated risk of perioperative pulmonary complications, including airway obstruction and atelectasis. Continuous positive airway pressure may improve postoperative lung mechanics and reduce postoperative complications in patients undergoing abdominal surgery. METHODS: Forty morbidly obese patients with known obstructive sleep apnea undergoing laproscopic bariatric surgery with ...
Hoshino Yuko - - 2009
Upper airway obstruction during sleep can trigger compensatory neuromuscular responses and/or prolong inspiration in order to maintain adequate minute ventilation. The aim of this study was to investigate the strength of these compensatory responses during upper airway obstruction during propofol anesthesia. We assessed respiratory timing and upper airway responses to ...
El Solh Ali - - 2009
PURPOSE: Continuous positive airway pressure (CPAP) is considered the standard therapy for obstructive sleep apnea syndrome. In the absence of standard protocol, CPAP titration may be unsuccessful. The purpose of this study was to test the hypothesis that application of an artificial neural network (ANN) to CPAP titration would achieve ...
Lee Heow Pueh - - 2009
Nasal obstruction (NO) is a very common symptom, but its effect on nasal physiology has not been fully understood. We performed this study to determine the effect of severity of NO due to inferior turbinate hypertrophy on airflow pattern using the computational fluid dynamics simulations. A three-dimensional nasal cavity model ...
Oliven Ron - - 2009
Both mandibular advancement (MA) and stimulation of the genioglossus (GG) have been shown to improve upper airway patency, but neither one achieves the effect of continuous positive airway pressure (CPAP) treatment. In the present study we assessed the combined effect of MA and GG stimulation on the relaxed pharynx in ...
Glidewell Robert N - - 2009
A 41-year-old white woman on long-acting opioid therapy was diagnosed with moderate obstructive sleep apnea. On initiation of continuous positive airway pressure (CPAP), she manifested severe central apnea that was unresponsive to supplemental oxygen and interfered with CPAP titration. Acetazolamide, 250 mg, nightly at bedtime was initiated, and CPAP titration ...
Holanda Marcelo Alcantara - - 2009
OBJECTIVE: Failure of noninvasive ventilation (NIV) has been associated with short-term adverse effects related to the use of masks. The aim of this study was to compare the incidence, type and intensity of adverse effects, as well as the comfort, of total face masks (TFMs), facial masks (FMs) and nasal ...
Timmermann Arnd - - 2009
BACKGROUND: In March 2007, a new disposable laryngeal mask airway (LMA) became available. The LMA Supreme (The Laryngeal Mask Company Limited, St. Helier, Jersey, Channel Islands) aims to combine the LMA Fastrach feature of easy insertion with the gastric access and high oropharyngeal leak pressures of the LMA ProSeal. METHODS: ...
Bellani Giacomo - - 2009
PURPOSE: The purpose of this study is to describe and test a modified Boussignac system for non-invasive continuous positive airway pressure, aimed at reducing the decrease in inspiratory oxygen fraction (FiO(2)) with higher inspiratory peak flow rates. METHODS: We modified a Boussignac circuit by inserting a T-piece between the Boussignac ...
Luo Y M YM Guangzhou Medical College, Guangzhou Institute of Respiratory Diseases, 151 Yanjiang Road, Guangzhou 510120, - - 2009
Pressure release continuous positive airway pressure (CPAP) is an evolution of CPAP that has been reported to improve patient comfort. We hypothesised the pressure release would lead to unloading of the inspiratory muscles and therefore conducted a prospective double-blind cross-over physiological study of autotitrating CPAP (APAP) against autotitrating pressure relief ...
Baguet J-P - - 2009
Obstructive sleep apnoea syndrome (OSAS), due to the collapse of the upper airways, is a common but still underestimated condition. The 'dose-response' type relationship between OSAS and hypertension (HT) has now been clearly proven. There are multiple mechanisms explaining this relationship, the main one being an increase in sympathetic activity ...
Manilal-Reddy P I - - 2009
A continuous oscillatory positive airway pressure with pressure oscillations incidental to the mean airway pressure (bubble CPAP) is defined as a modified form of traditional continuous positive airway pressure (CPAP) delivery where pressure oscillations in addition to CPAP are administered to neonates with lung diseases. The mechanical effect of the ...
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