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Bernstein David B DB School of Engineering, University of Vermont, 149 Beaumont Avenue, HSRF 228, Burlington, VT 05405-0075, - - 2013
The current standard of care for patients suffering from acute respiratory distress syndrome (ARDS) is ventilation with a tidal volume of 6 ml/kg predicted body weight (PBW), but variability remains in the tidal volumes that are actually used. This study aims to identify patient scenarios for which there is discordance ...
Johannes Amélie - - 2013
ABSTRACT Oxygenation during high-frequency oscillatory ventilation is secured by a high level of mean airway pressure. Our objective was to identify a pressure difference between the airway opening of the respiratory circuit and the trachea during application of different oscillatory frequencies. Six female Pietrain pigs (57.1 ± 3.6 kg) were first ...
Canha N - - 2013
This study focused on examination of ventilation rates in classrooms with two different types of ventilation systems: natural and mechanical. Carbon dioxide (CO2) measurements were conducted in primary schools of Portugal characterized by natural ventilation and compared to Finland where mechanical ventilation is the norm. The winter period was selected ...
Gaszyńska Ewelina - - 2013
Noninvasive ventilation (NIV) is a technique of mechanical ventilation which does not require invasive airway management, i.e. intubation or tracheostomy. In emergency medicine Continuous Positive Airway Pressure (CPAP) is used often. A new method of NIV is Impedance Threshold Device (ITD). Breathing through an ITD is utilized to raise blood ...
Jain Richa - - 2013
Negative pressure pulmonary oedema (NPPO) is a life threatening condition, manifested due to upper airway obstruction in a spontaneously breathing patient. Upper airway obstruction caused by classic laryngeal mask airway (cLMA) and ProSeal laryngeal mask airway (PLMA) has been reported, and NPPO has also been reported following the use of ...
Atef Hosam M - - 2013
Perfusion index (PI) is a non-invasive numerical value of peripheral perfusion obtained from a pulse oximeter. In this study, we evaluated the efficacy of PI for detecting haemodynamic stress responses to insertion of i-gel, laryngeal mask airway (LMA) and endotracheal tube and compare, its reliability with the conventional haemodynamic criteria ...
Chaudhary Kapil - - 2013
Continuous positive airway pressure is required by patients of obstructive sleep apnea to prevent any obstruction of airways. This requires CPAP machines which are costly, have electrical dependence and are not readily available. The nasal CPAP assembly devised by us overcomes most of these limitations and can be made from ...
Drevhammar Thomas - - 2013
OBJECTIVES:: Nasal continuous positive airway pressure (NCPAP) is an established treatment for respiratory distress in neonates. Most modern ventilators are able to provide NCPAP. There have been no large studies examining the properties of NCPAP delivered by ventilators. The aim of this study was to compare pressure stability and imposed ...
Billings Catherine G CG Respiratory Medicine, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK. - - 2013
Obstructive sleep apnea-hypopnea syndrome is associated independently with an increase in cardiovascular risk factors and is associated with self-reported lack of exercise. We aimed to investigate the utility of the incremental shuttle walk test in routine clinical practice to monitor physical capacity of patients with obstructive sleep apnea-hypopnea syndrome and ...
Koh Jae Chul - - 2013
ABSTRACT: Study Design. Prospective study on intraoperative blood loss during lumbar spine surgery.Objective. To evaluate the relationship between airway pressure change due to the patient's prone position and intraoperative blood loss during lumbar spine surgery.Summary of the Background Data. A prone position may increase abdominal pressure. Changes in abdominal pressure ...
Yorgun Hikmet - - 2013
Previous studies showed that treatment of obstructive sleep apnea syndrome (OSAS) with continuous positive airway pressure (CPAP) significantly reduced the blood pressure (BP) in hypertensive patients. We investigated the predictors of BP change in normotensive patients with OSAS who underwent CPAP. A total of 24 patients with OSAS (19 male; ...
Jubran Amal - - 2013
Patients requiring prolonged mechanical ventilation (>21 days) are commonly weaned at long-term acute care hospitals (LTACHs). The most effective method of weaning such patients has not been investigated. To compare weaning duration with pressure support vs unassisted breathing through a tracheostomy collar in patients transferred to an LTACH for weaning ...
Wong D T - - 2013
Traditionally, Continuous Positive Airway Pressure (CPAP) and Bilevel Positive Airway Pressure (BiPAP) devices have been used to treat patients in acute respiratory failure. However they require an electric power source, are relatively large in size, and may be difficult to use in prehospital settings. The recently introduced Boussignac CPAP system ...
Carassiti M - - 2013
Background: Forces applied on oropharyngeal soft tissues by direct laryngoscopy may cause damage to the patients. The aim of this study was to measure the forces applied during the manoeuvres to achieve glottis visualization and tracheal intubation, comparing direct laryngoscopy and videolaryngoscopy in vivo. Methods: Thirty adult patients (ASA physical ...
Tehrani Fleur T - - 2013
Synchronization of spontaneous breathing with breaths supplied by the ventilator is essential for providing optimal ventilation to patients on mechanical ventilation. Some ventilation techniques such as Adaptive Support Ventilation (ASV), Proportional Assist Ventilation (PAV), and Neurally Adjusted Ventilatory Assist (NAVA) are designed to address this problem. In PAV, the pressure ...
Gasa Merce - - 2013
Hypoxic brain damage might explain persistent sleepiness in some continuous positive airway pressure-compliant obstructive sleep apnoea called residual excessive sleepiness. Although continuous positive airway pressure may not be fully efficient in treating this symptom, wake-promoting drug prescription in residual excessive sleepiness is no longer allowed by the European Medicines Agency. ...
Yeganeh Naser - - 2013
BACKGROUND: Maintaining blood pressure (BP) and heart rate (HR) after laryngoscopy and tracheal intubation has always been a concern for anesthesiologists. Opioids can attenuate or stop an increase in these two parameters if administered with proper doses or targets in target-controlled infusion (TCI). Remifentanil and sufentanil are widely used for ...
Khirani S - - 2013
A 4-year-old girl with bilateral vocal fold palsy was successfully decannulated from tracheotomy after seven laryngeal procedures. But an important stridor and dyspnea recurred 13 months after decannulation. Nocturnal gas exchange was normal but her daytime work of breathing was increased by fourfold, without any beneficial effect of nasal noninvasive ...
White Cynthia C - - 2013
Introduction:Noninvasive Ventilation (NIV) is usually applied using Bi-Level Positive Airway Pressure (Bi-PAP) devices and many of these devices use a single-limb patient circuit with an integrated leak port to purge the circuit of exhaled carbon dioxide. Sometimes, bronchodilator therapy is indicated in pediatric patients. However, there have been no forthcoming ...
Tan Jie - - 2013
OSAHS is a common disease with many factors related to the etiology. Airflow plays an important role in the pathogenesis of OSAHS. Previous research has not yielded a sufficient understanding of the relationship between airflow in upper airway and the pathophysiology of OSAHS. Therefore, a better understanding of the flow ...
Lemyze Malcolm - - 2013
To evaluate the impact of switching to total face mask in cases where face mask-delivered noninvasive mechanical ventilation has already failed in do-not-intubate patients in acute respiratory failure. Prospective observational study in an ICU and a respiratory stepdown unit over a 12-month study period. Switching to total face mask, which ...
Downie Sue R - - 2013
The forced oscillation technique (FOT) and multiple-breath nitrogen washout (MBNW) are noninvasive tests that are potentially sensitive to peripheral airways, with MBNW indexes being especially sensitive to heterogeneous changes in ventilation. The objective was to study methacholine-induced changes in the lung periphery of asthmatic patients and determine how changes in ...
Kasai Takatoshi - - 2013
This study sought to test the effects of rostral fluid displacement from the legs on transpharyngeal resistance (Rph), minute volume of ventilation (Vmin), and partial pressure of carbon dioxide (PCO2) in men with heart failure (HF) and either obstructive (OSA) or central sleep apnea (CSA). Overnight rostral fluid shift relates ...
Jung Boris - - 2013
ABSTRACT: INTRODUCTION: Protective ventilation using limited airway pressures and ventilation may result in moderate and prolonged hypercapnic acidosis, as often observed in critically ill patients. Because allow of moderate and prolonged hypercapnia may be considered as a protective measure for the lungs, we hypothesized that moderate and prolonged hypercapnic acidosis ...
Barreiro Timothy J - - 2013
Tracheal stenosis used to be a complication of tracheostomy. Prior to the introduction of mechanical ventilation for treatment of respiratory failure, although the incidence of post intubation tracheal stenosis has markedly decreased with the advent of large volume, low pressure cuffs, it still occurs, commonly in patients after prolonged intubation. ...
Sawano Yukari - - 2013
PURPOSE: The purpose of this study was to compare the dose-related effects of fentanyl on systemic hemodynamics, hormone release and cardiac output in response to endotracheal intubation in patients with and without hypertension. METHODS: Forty-five patients without hypertension and 45 patients with hypertension (total 90 patients) undergoing elective general surgical, ...
Hlastala Michael P - - 2013
Highly blood soluble gases exchange with the bronchial circulation in the airways. On inhalation, air absorbs highly soluble gases from the airway mucosa and equilibrates with the blood before reaching the alveoli. Highly soluble gas partial pressure is identical throughout all alveoli. At the end of exhalation, the partial pressure ...
Oh Jaehoon - - 2013
STUDY OBJECTIVE: Cricoid pressure may negatively affect laryngeal view and compromise airway patency, according to previous studies of direct laryngoscopy, endoscopy, and radiologic imaging. In this study, we assess the effect of cricoid pressure on laryngeal view with a video laryngoscope, the Pentax-AWS. METHODS: This cross-sectional survey involved 50 American ...
El-Beleidy Ahmed Saad El-Din - - 2013
Background. Automatic tube compensation (ATC) has been developed to overcome the imposed work of breathing due to artificial airways during spontaneous breathing trials (SBTs). Objectives. This study aimed to assess extubation outcome after an SBT (spontaneous breathing trial) with ATC compared with pressure support ventilation (PSV) and to determine the ...
Maharjan Shyam Krishna - - 2013
Introduction: I-gel is a relatively new supra-glotitc airway device which is claimed to be superior to laryngeal mask airway. It can be used ingeneral anesthesia with spontaneous ventilation as well as with positive pressure ventilation.This study was designed to assess whether I-gel creates adequate laryngeal seal during positive pressure ventilation ...
Wirth Klaus J - - 2013
Drug treatment for obstructive sleep apnea (OSA) is desirable because at least 30% of patients do not tolerate continuous positive airway pressure (CPAP) treatment. The negative pressure reflex (NPR) involving superficially located mechanoreceptors in the upper airway (UA) is an important mechanism for UA patency inhibitable by topical UA anesthesia ...
Yamaguchi Hiromichi - - 2013
An 83-year-old man who had been receiving treatment for bronchial asthma since 62 years of age experienced difficulty breathing on exertion and was admitted to the hospital. On admission, computed tomography revealed tracheal wall thickening, while test results for antinuclear antibodies and anti-type II collagen antibodies were positive. Since a ...
Rodriguez Elena - - 2013
The technique of measuring transpulmonary pressure and respiratory airflow with manometry and pneumotachography using the least mean squared analysis (LMS) has been used broadly in both preclinical and clinical settings for the evaluation of neonatal respiratory function during tidal volume breathing for lung tissue and airway frictional mechanical properties measurements. ...
Ko Byung Ju - - 2013
Etomidate has a stable hemodynamic profile after induction, but hypertension and tachycardia are frequent after intubation as well as myoclonus. We compared the effects of fentanyl and remifentanil on the hemodynamic response to intubation and myoclonus during etomidate induction in elderly patients. Ninety ASA I or II patients aged over ...
Mousa Wesam Farid - - 2013
Hypoxaemia and high peak airway pressure (Ppeak) are common anesthetic problems during laparoscopic bariatric surgery. Several publications have reported the successful improvement in arterial oxygenation using positive end expiratory pressure and alveolar recruitment maneuver, however, high peak airway pressure during laparoscopic bariatric surgery may limit the use of both techniques. ...
Kübler Andrzej - - 2013
Background Mechanical ventilation is the primary method of supporting organ function in patients treated in intensive care units (ICUs). Lung damage from mechanical ventilation can be avoided by using the correct ventilation modes. This study was designed to assess the epidemiology and treatment strategies of patients receiving mechanical ventilation in ...
Simera M - - 2013
The effects of microinjections of the excitatory neurotoxin kainic acid (2 mg/ml; 49 ± 1 nl) on the mechanically induced tracheobronchial cough, sneeze, and solitary expulsions from the trachea were examined in 11 anesthetized rabbits. Kainic acid was injected into the medulla (1.6-2.8 mm rostral to the obex, 1.4-1.6 and ...
Grassi P - - 2013
Pulse pressure variation predicts fluid responsiveness in mechanically ventilated patients passively adapted to the ventilator. Its usefulness in actively breathing ventilated patients was examined only by few studies with potential methodological shortcomings. This study sought to describe the performance of pulse pressure variation as a predictor of fluid responsiveness in ...
Yarahmadi Alireza - - 2013
We present four cases of adults with obstructive sleep apnea in whom positive airway pressure therapy alone failed to provide adequate oxygenation. We have previously reported the use of dual mask for ventilatory support of a patient postoperatively (Porhomayon et al., 2013). Here, we report an evaluation of the dual ...
Pipanmekaporn Tanyong - - 2013
The purpose of this study was to determine the effect of dexmedetomidine on hemodynamic responses to DLT intubation compared to placebo and to assess the adverse effects related to dexmedetomidine. Sixty patients were randomly allocated to receive 0.7  μ g/kg dexmedetomidine (n = 30) or normal saline (n = 30) ...
Dolan Anne M - - 2013
An approach which promotes a rapid return to spontaneous respiration after tracheobronchial stent (TBS) insertion is considered the optimal one and is a belief shared by anaesthetists, respiratory physicians, and surgeons alike (Calvey and William (2008)). The value of the laryngeal mask airway (LMA), followed by use of the Monsoon ...
Johnston James - - 2013
Negative pressure wound therapy (NPWT) is an effective modality in most areas of the body and is associated with more rapid healing. However the use of negative pressure remains a challenge in managing complex wounds of the head and neck region. We present the case of a patient with a ...
Hassani Valiallah V Department of Anesthesiology, Rasoul-Akram Medical Center, Iran University of Medical Sciences (IUMS), Tehran, Iran ; Minimally Invasive Surgery Research Center, Rasoul-Akram Medical Center, Iran University of Medical Sciences (IUMS), Tehran, - - 2013
Induction of anesthesia and endotracheal intubation often creates a period of hemodynamic instability in hypertensive patients. Endotracheal intubation of the trachea stimulates laryngeal and tracheal sensory receptors, resulting in a marked increase in the elaboration of sympathetic amines. This trial aimed to evaluate and compare the efficacy of fentanyl and ...
Endara-Bravo Andres A Sleep Medicine Program, University of Miami - Miller School of Medicine, Miami, - - 2013
Continuous positive airway pressure (CPAP) is a safe therapy for the management of obstructive sleep apnea (OSA). Complications such as sinus infection, bronchitis, ear pain, nasal congestion, and dryness of mucous membranes secondary to CPAP use have been reported. To follow, we describe a rare case of alternobaric vertigo secondary ...
Kolli Kranthi K KK School of Dynamic Systems, Mechanical Engineering Program, University of Cincinnati, Cincinnati, OH, USA Veteran Affairs Medical Center, Cincinnati, OH, - - 2013
The study of hemodynamics in an animal model simulating coronary stenosis has been limited due to the lack of a safe, accurate and reliable technique for creating an artificial stenosis. Creating artificial stenosis using occluders in an open-chest procedure has often caused myocardial infarction (MI) or severe injury to the ...
Ratajczyk Paweł P Department of Emergency Medicine and Disaster Medicine, Medical University of Lodz, - - 2013
The aim of this study was to compare ventilation parameters during mechanical ventilation using Laryngeal Mask Airway (LMA), Laryngeal Tube (LT), and Peri-Laryngeal Airway Cobra (PLA). In a prospective, randomised controlled trial, 90 patients undergoing general anaesthesia for elective surgery were divided into three subgroups. The settings of controlled ventilation ...
Siew Melissa L - - 2012
Background:Recent phase contrast (PC) X-ray imaging studies suggest that inspiration primarily drives lung aeration and airway liquid clearance at birth, which questions the role of adrenaline-induced activation of epithelial sodium channels (ENaCs). We hypothesised that pressures generated by inspiration have a greater role in airway liquid clearance than ENaCs after ...
Bassi Gianluigi Li - - 2012
OBJECTIVE:: To assess the structural characteristics involved in the design of high-volume low-pressure endotracheal tube cuffs that are associated with fluid sealing effectiveness and to determine the extent of transmitted tracheal pressures upon cuff inflation. DESIGN:: In vitro study. SETTINGS:: Pneumology laboratories. INTERVENTIONS:: Eight high-volume low-pressure cuffs of cylindrical or ...
Kasiakogias Alexandros - - 2012
OBJECTIVE:: Several studies have reported a small yet significant decrease in blood pressure (BP) with continuous positive airway pressure (CPAP) application in patients with obstructive sleep apnea (OSA). We investigated the long-term efficiency of CPAP in the management of hypertensive patients with OSA on top of conventional antihypertensive medication. METHODS:: ...
Fujikawa Tetsuya - - 2012
OBJECTIVE:: We developed a new technique to measure blood pressure (BP) - the triple cuff and pulse delay time technique (TC-PDT) - which measures delay time with a single sensor at a single site unlike the existing delay time methods. This study aimed to evaluate the adequacy and accuracy of ...
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