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Results 301 - 350 of 1849
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Bach John R - - 2012
OBJECTIVES: Respiratory management of patients with end-stage respiratory muscle failure of neuromuscular disease has evolved from no treatment and inevitable respiratory failure to the use of up to continuous noninvasive intermittent positive pressure ventilatory support (CNVS) to avert respiratory failure and to permit the extubation of "unweanable" patients without tracheostomy. ...
Chiumello D - - 2012
CPAP is the application in the airways of continuous positive pressure, close to the positive end expiratory pressure (PEEP). The two common available systems are by a continuous (high/low) flow system and by a mechanical ventilator. Aim of this study was to compare the mechanical performance of the CPAP systems ...
Babik Barna - - 2012
ABSTRACT: INTRODUCTION: The slope of phase III of the capnogram (SIII) relates to progressive emptying of the alveoli, a ventilation/perfusion mismatch, and ventilation inhomogeneity. SIII depends not only on the airway geometry, but also on the dynamic respiratory compliance (Crs); this latter effect has not been evaluated. Accordingly, we established ...
Sato Fumitomo - - 2012
Negative pressure pulmonary edema (NPPE), or acute postobstructive pulmonary edema, is caused by negative intrathoracic pressure against an obstructed upper airway. Although NPPE is generally a benign condition, several fatal cases attributed to the delay in diagnosis have been reported. We report a case of NPPE experienced during Dumon stent ...
Rubini Alessandro - - 2012
To describe the consequences of the cranial displacement of the diaphgram occurring during pneumoperitoneum (Pnp) and/or Trendelenburg (Tnd) position on respiratory mechanics. Possible addictive effects and the changes of the viscoelastic respiratory system resistance were studied, which were not extensively described before. The end-inflation occlusion method was applied on eight ...
Kim Eun-Jung - - 2012
Desflurane has the most rapid onset and offset of action among the volatile anesthetic agents used for general anesthesia, but it can cause airway reactivity, tachycardia, and hypertension during induction, especially in pediatric patients. This study was designed to determine a median effective effect-site concentration (EC(50)) of remifentanil to prevent ...
Bell S F - - 2012
We compared insertion rates of single-use polyvinyl chloride laryngeal mask airways (LMAs) vs single-use silicone LMAs in 72 anaesthetised patients. Both airways were produced by Flexicare Medical. Laryngeal mask airway insertion was successful on the first attempt in 68/72 (94%) polyvinyl chloride LMAs vs 64/72 (89%) silicone LMAs (p = 0.39). Overall ...
Berg Katherine Margaret - - 2012
Noninvasive ventilation, both continuous positive airway pressure and noninvasive positive pressure ventilation, has been used increasingly for acute respiratory failure over the past several years. Noninvasive ventilation has been proven to be beneficial for some causes of acute respiratory failure, most clearly for acute exacerbations of chronic obstructive pulmonary disease, ...
Moorhead Katherine T - - 2012
Neurally adjusted ventilatory assist (NAVA) is a ventilation assist mode that delivers pressure in proportionality to electrical activity of the diaphragm (Eadi). Compared to pressure support ventilation (PS), it improves patient-ventilator synchrony and should allow a better expression of patient's intrinsic respiratory variability. We hypothesize that NAVA provides better matching ...
Fernandez Alvarez Ramon - - 2013
Leakage is common in patients receiving home mechanical ventilation (HMV) via a face mask. Although pressure ventilators have partial compensatory capacity, excessive leakage can compromise the effectiveness of treatment. Home ventilators are equipped with built-in software which provides information on leakage. However, the values of leakage and their effects in ...
Mojoli Francesco - - 2012
OBJECTIVE: To test the effects on mechanical performance of helmet noninvasive ventilation (NIV) of an optimized set-up concerning the ventilator settings, the ventilator circuit and the helmet itself. SUBJECTS AND METHODS: In a bench study, helmet NIV was applied to a physical model. Pressurization and depressurization rates and minute ventilation ...
Ghai Babita - - 2012
BACKGROUND: Clinical end points are often used to guide inflation and adequacy of cuff seal after laryngeal mask airway placement. However, clinical end points for cuff inflation have been shown to have significantly higher intracuff pressure. The adjusted cuff pressure between 55 and 60 cm H(2) O causes significantly better seal ...
Jiménez Caballero Pedro Enrique - - 2012
BACKGROUND: Cerebral vasoreactivity in obstructive sleep apnea syndrome is altered. Continuous positive airway pressure is effective in the reduction of the occurrence of apneas. We studied whether this treatment also improves cerebral vasoreactivity. METHODS: The breath-holding maneuver was performed and assessed by apnea test with transcranial Doppler in the basilar ...
Theiler L L Department of Anesthesiology, Perioperative Medicine and Pain Management, University of Miami Miller School of Medicine, Gautier Bldg, Room 415, 1011 N.W. 15th Street, Miami, FL 33136, USA. - - 2012
The i-gel™ supraglottic airway device has been studied in randomized controlled studies, but it has not been evaluated in a large prospective patient cohort. Therefore, we performed this prospective multicentre observational study to evaluate success rates, airway leak pressure, risk factors for i-gel failure, and adverse events. With Ethics Committee ...
Scherer Ronald - - 2012
The air pressures within the glottis during phonation may be highly dependent upon the symmetry of the glottis and other laryngeal structures. Physical laryngeal models M5 and M6 have been used to explore the slanted "oblique" glottis with different included and oblique angles, the change to three dimensions, and the ...
Ramadan M - - 2012
The pressure exerted by an endotracheal tube cuff against the tracheal wall depends on the compliance of the trachea and cuff.
Jane Pillow J - - 2012
Various commercial and home-made continuous positive airway pressure (CPAP) systems are described in this article. CPAP may be delivered via a range of device-patient interfaces; nasal CPAP is most common, and short binasal prongs impose the least extrinsic load impedance on the infant. The source of pressure generation is categorized ...
Nivan L - - 2012
Cricoid pressure has been long used by clinicians to reduce the risk of aspiration during tracheal intubation. Historically, it is defined by Sellick as temporary occlusion of the upper end of the oesophagus by backward pressure of the cricoid cartilage against the bodies of the cervical vertebrae. The clinical relevance ...
Sankaran Koravangattu - - 2012
In the era of gentle ventilation and open lung strategy noninvasive ventilatory support in neonates has gained momentum and its use in nurseries around the world is also increased. This paper reviews various modalities of non-invasive respiratory support in some details and its relevance in the recent evidence based use. ...
Gregson Rachael - - 2012
A 7-year-old gelded Irish sports horse weighing 650 kg was anesthetized on 2 consecutive days for lavage of a septic right radio-carpal joint. On both occasions the endotracheal tube connector, which had been bound in medical tape to produce an airtight seal, functioned as a unidirectional valve during mechanical ventilation, ...
Al Masry Ashraf - - 2012
The PEEP in ALI/ARDS had been used since its' description (1967). Up-to-date no optimal approach to PEEP setting had been introduced, however common approaches that had been introduced included Pressure volume curves, increasing PEEP trial, decreasing PEEP trial & PEEP/FiO2 tables adopted by ARDS network. The present work assessed the ...
Lee Jeong Han - - 2012
This study was designed to compare the effect of dexmedetomidine and remifentanil used in anesthetic induction on hemodynamic change after direct laryngoscopy and tracheal intubation. A total of 90 ASA class 1 or 2 patients were randomly assigned to one of 3 groups to receive one of the following treatments ...
Ko Duk-Dong - - 2012
Optiscope™ is a newly developed video stylet device. This study evaluated and compared the hemodynamic changes observed after endotracheal intubation with video stylet and after conventional laryngoscopic endotracheal intubation. Fifty-eight adult patients with American Society of Anesthesiologists (ASA) physical status class 1 or 2, undergoing general anesthesia, were randomized into ...
Gupta Kapil - - 2012
The flexible fibreoptic bronchoscope and bonfils rigid intubation endoscope are being widely used for difficult intubations. The haemodynamic response to intubation under general anaesthesia was studied in 60 adult female patients who were intubated using either flexible fibreoptic bronchoscope or bonfils rigid intubation endoscope (30 in each group). Non-invasive blood ...
Heier Jake M - - 2012
We report two cases of successful urgent intubation using a Seldinger technique for airway management through an anesthesia facemask, while maintaining ventilation in patients with difficult airways and grossly distorted airway anatomy. In both cases, conventional airway management techniques were predicted to be difficult or impossible, and a high likelihood ...
Paré Peter D - - 2012
In this article, we discuss the interaction of the lung parenchyma and the airways as well as the physiological and pathophysiological significance of this interaction. These two components of the respiratory organ can be thought of as two independent elastic structures but in fact the mechanical properties of one influence ...
Mujahid-ul-Islam - - 2012
Sympathetic response associated with laryngoscopy and endotracheal intubation is recognised as a potential cause for a number of complications especially in hypertensive patients. Various methods have been used to attenuate these haemodynamic responses; however most of the studies are in normotensive patients. The aim of our study was to compare ...
MacFarlane Paul D - - 2012
This case series is the first report of the use of CPAP (continuous positive airway pressure) ventilation in adult horses. Two horses and 3 ponies anesthetized for orthopedic procedures in lateral recumbency received 10 cm H(2)O CPAP. During anesthesia, arterial oxygen partial pressure tended to increase and arterial carbon dioxide ...
van Zundert Tom T Department of Anaesthesia, Cairns Hospital, James Cook University, Cairns, Queensland, Australia. - - 2012
The purpose of this study was to evaluate the cuff pressures of four different laryngeal masks in paediatric patients undergoing routine surgery and to determine whether there is a substantial increase in cuff pressure when silicone masks are used compared to PVC laryngeal mask airways. Hundred and forty patients aged ...
Silva Aline Rafaele Barros - - 2012
Mechanical ventilation is associated with retained airway secretions. Manually assisted cough contributes to the displacement of bronchial mucus, whereas positive end-expiratory pressure increases collateral ventilation and maintains airway patency. This study aimed to assess the effects of manually assisted cough, either alone or added to increased positive end-expiratory pressure and ...
Sekizuka Hiromitsu - - 2013
The following three case reports present the effects of 6-month continuous positive airway pressure (CPAP) therapy on blood pressure (BP) in severe obstructive sleep apnea patients with resistant hypertension. Case 1 A 58-year-old woman exhibited a decreased 24-hour BP and changes in the nocturnal BP dipping pattern from non-dipper to ...
Atef Hossam M - - 2012
To compare two different supraglottic airway devices, the laryngeal mask airway (LMA) and the I-gel, regarding easiness of insertion of the device, leak pressure, gastric insufflation, end tidal CO2, oxygen saturation, hemodynamic and postoperative complications in anesthetized, spontaneously ventilated adult patients performing different non-emergency surgical procedures. The study was carried ...
Beuret Pascal - - 2012
This clinical study evaluated the effect of a suctioning maneuver on aspiration past the cuff during mechanical ventilation. Patients intubated for less than 48 hours with a PVC-cuffed tracheal tube, under mechanical ventilation with a PEEP ≥5 cm H2O and under continuous sedation, were included in the study. At ...
Maassen R L J G - - 2012
Previous studies comparing Glidescope and classic direct laryngoscopy did not show an attenuation of CV responses to endotracheal intubation. In the present study, we hypothesize that indirect videolaryngoscopy can attenuate cardiovascular responses to endotracheal intubation. In a randomized cross-over study, eighty adults (ASA PS II-III) were included. Both direct and ...
Sunderram Jag - - 2012
Obstructive sleep apnea (OSA) is characterized by episodes of repeated airway obstruction resulting in cessation (apnea) or reduction (hypopnea) in airflow during sleep. These events lead to intermittent hypoxia and hypercapnia, sleep fragmentation, and changes in intrathoracic pressure, and are associated with a marked surge in sympathetic activity and an ...
Robinson Amelia - - 2012
To evaluate and compare the effectiveness and tolerability of preoxygenation with the self-inflating bag-valve-mask (BVM) and non-rebreather mask (NRM) as are used before emergency anaesthesia. Device performance evaluation. Experimental study. 12 male and 12 female healthy volunteers (age range 24-47) with no history of clinically significant respiratory disease. End-expiration oxygen ...
Razi Ebrahim E Trauma Research Center, Kashan University of Medical Sciences, Kashan, IR - - 2012
Patients undergone mechanical ventilation need rapid and reliable evaluation of their respiratory status. Monitoring of End-tidal carbon dioxide (ETCO2) as a surrogate, noninvasive measurement of arterial carbon dioxide (PaCO2) is one of the methods used for this purpose in intubated patients. The aim of the present trial was to study ...
Nichols Joann - - 2011
Salt sensitivity of blood pressure has been studied in humans with a 48-hour inpatient protocol of salt loading and depletion or with longer outpatient protocols using high- and low-salt diets. Results have been reproducible, but both methods are laborious and costly. A 6-hour protocol of intravenous salt loading and furosemide ...
Fuchiwaki Yusuke - - 2011
A novel flow-through polymerase chain reaction (PCR) microfluidic system using vapor pressure was developed that can achieve ultra-rapid, small-volume DNA amplification on a chip. The 40-cycle amplification can be completed in as little as 120s, making this device the fastest PCR system in the world. The chip device is made ...
He Jack L - - 2011
BackgroundPrevious research shows serum 25-hydroxyvitamin D (25(OH)D) and parathyroid hormone (PTH) are each associated with blood pressure (BP), but it is unclear whether these associations are independent.MethodsCross-sectional data from the US National Health and Nutrition Examination Surveys (NHANES) during 2003-2006. Analyses were restricted to 7,561 participants aged ≥20 years with ...
Grassi Guido - - 2011
Achievement of goal blood pressure values, particularly in high-risk categories of patients, still remains an unmet goal of the therapeutic approach to hypertension. The same conclusion can be drawn for patient adherence to antihypertensive drugs, which is a variable of major relevance for obtaining optimal blood pressure control in treated ...
- - 2011
The Food and Drug Administration (FDA) is classifying the hemorrhoid prevention pressure wedge into class II (special controls). The special controls will apply to the device in order to provide a reasonable assurance of safety and effectiveness of the device. A hemorrhoid prevention pressure wedge provides support to the perianal ...
Lai Wen-Ter - - 2011
Introduction: Previous studies have demonstrated that hypertensive patients need concomitant therapy with one or more drugs from different classes of antihypertensive agents to achieve their blood pressure control targets. We performed the first multinational observational study of valsartan/hydrochlorothiazide (HCTZ) single pill combination in Asia to determine the efficacy, safety, and ...
Milan Manuela - - 2011
PURPOSE: We assessed the performance of different continuous positive airway pressure (CPAP) helmets equipped with a safety valve during discontinuation of fresh gas flow. METHODS: This was a physiological study of five healthy volunteers. We delivered CPAP (fresh gas flow 60 l/min, FiO(2) 60%, PEEP 5 cmH(2)O) with three different helmets in ...
Shaheen A F - - 2011
BACKGROUND: The scapula locator method has associated intra-observer and inter-observer errors caused by the dependency on the observer to locate the scapular landmarks. The potential effect of the pressures applied by the observer on the measured scapular kinematics when this method is used has also been overlooked so far. The ...
Considine Kiera M - - 2011
Aims:  To assess the contribution of proline biosynthesis to listerial barotolerance. Methods and Results:  Using a L. monocytogenes proBA deletion mutant, incapable of synthesizing proline, together with a proline overproducing strain, the contribution of proline synthesis to listerial barotolerance was determined. The ΔproBA strain does not survive as well as ...
Iff I - - 2011
Twelve healthy cattle (weighing 188-835kg) were placed in stocks and sedated with xylazine. Caudal epidural puncture was performed using an acoustic device that indicated a decrease in resistance with a change in pitch. Lidocaine was injected to verify correct needle placement by assessing needle prick stimuli applied on the left ...
- - 2011
If the patient's breathing circuit becomes disconnected during a high-airway-pressure event, Draeger Medical's Evita series and Savina ventilators may continue to display an "Airway Pressure High" alarm message, rather than appropriately displaying the "Airway Pressure Low" message. This may distract staff from the true hazard, potentially inhibiting or delaying care ...
Topouchian Jirar - - 2011
Four oscillometric devices for self-measurement of blood pressure (SBPM) were evaluated according to the European Society of Hypertension (ESH) international protocol and its 2010 revision in four separate studies. The Omron® M2, Omron M3, and Omron M6 measure blood pressure (BP) at the brachial level, while the Omron R2 measures ...
Krantz Mori J - - 2011
Preventive cardiology has expanded beyond coronary heart disease towards prevention of a broader spectrum of cardiovascular diseases. Ethnic minorities are at proportionately greater risk for developing extracoronary vascular disease including heart failure and cerebrovascular disease. We performed a cross sectional study of Latino and White hypertension patients in a safety-net ...
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