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Mortola Jacopo P - - 2010
This study examined the static and dynamic properties of the respiratory system in avian hatchlings, and the effects of incubation in hypoxia (15% O(2)) on these variables. In 1-day old chicken (Gallus gallus) hatchlings killed by an anesthetic overdose the static compliance of the respiratory system (C(rs)) was measured from ...
Topchiy Irina I Center for Narcolepsy, Sleep and Health Research, M/C 802, University of Illinois at Chicago, 845 South Damen Ave., Chicago, IL 60612, USA. - - 2011
Cardiorespiratory coupling can be significantly influenced by both pontine and vagal modulation of medullary motor and premotor areas. We investigated influences of the pontine intertrigeminal region (ITR) and peripheral vagal pathways on the coupling between systolic blood pressure (SBP) and respiration in 9 anesthetized rats. Glutamate injection into the ITR ...
Harada Daisuke - - 2010
Chronic heart failure (HF) is characterized by sympathetic overactivation and periodic breathing. We examined whether adaptive servo-ventilation (ASV) exerts a sympathoinhibitory effect in patients with HF via normalizing respiratory pattern. Muscle sympathetic nerve activity (MSNA), heart rate, blood pressure, respiratory pattern and oxygen saturation were examined in 29 HF patients ...
Soong Wen-Jue - - 2010
A 9-year-old boy who developed a life-threatening anaphylaxis reaction of the airway and subsequent dyspnea and circulation collapse because of instilled the topical lidocaine into the airway within 2 min before performing flexible bronchoscopy (FB). FB revealed swollen airway mucosa and extensive foamy secretion that severely compromised the ventilation lumen. Rapid ...
Cagido Viviane Ramos - - 2010
During alternating ventilation (AV) one lung is inflating while the other is deflating. Considering the possible respiratory and hemodynamic advantages of AV, we investigated its effects during increased intra-abdominal pressure (IAP=10mmHg). In Sprague-Dawley rats (n=6, 270-375g) the main bronchi were independently cannulated, and respiratory mechanics determined while animals underwent different ...
Walterspacher Stephan - - 2010
PURPOSE:: Extensive breath-hold (BH) diving imposes high pulmonary stress by performing voluntary lung hyperinflation maneuvers (glossopharyngeal insufflation, GI), hyperinflating the lung up to 50% of total lung capacity. Breath-hold durations of up to 10 minutes without oxygen support may also presume cerebral alterations of respiratory drive. Little is known about ...
Musk Gabrielle C - - 2010
Increasing positive end-expiratory pressure (PEEP) is advocated to recruit alveoli during high-frequency jet ventilation (HFJV) but its effect on cardiopulmonary physiology and lung injury is poorly documented. We hypothesized that high PEEP would recruit alveoli and reduce lung injury but compromise pulmonary blood flow (PBF). Preterm lambs of anaesthetized ewes ...
Balik Martin - - 2011
We studied the influence of acute renal failure (ARF) on the relationship between N-terminal pro-B-type natriuretic peptide (NT-proBNP) and hemodynamic parameters. The echocardiographic parameters and NT-proBNP levels were compared between 26 mechanically ventilated patients with ARF requiring continuous hemodiafiltration and 44 control patients. The relationships between NT-proBNP and left ventricular ...
Vagiakis Emmanouil - - 2010
Congenital central hypoventilation syndrome (CCHS) is an uncommon disorder characterized by the absence of adequate autonomic control of respiration, which results in alveolar hypoventilation and decreased sensitivity to hypercarbia and hypoxemia, especially during sleep. Patients with CCHS need lifelong ventilatory support. The treatment options for CCHS include intermittent positive pressure ...
Solomon A W - - 2011
Air swallowing can occur as a psychogenic phenomenon, because of abnormal anatomy, or during non-invasive positive pressure ventilation. Gross distension of the stomach with air can have severe consequences for the respiratory and gastrointestinal systems. We report the case of a 62-year-old man with severe dynamic hyperinflation due to chronic ...
Phair Kristen - - 2010
Radiography is a valuable tool for assessment of pulmonary disease. Specifically, radiographs utilizing positive pressure ventilation can distinguish between anesthesia-induced atelectasis and pulmonary disease when survey radiographs are ambiguous. Positive pressure ventilation can be used to radiographically prove or disprove pulmonary disease. This is of particular clinical importance when working ...
Berlinski Ariel - - 2010
In-line administration of bronchodilators is widely used in pediatric patients receiving mechanical ventilation. We compared the amount of albuterol captured at the end of the endotracheal tube (ETT) with an intrapulmonary percussive ventilator (IPV) versus a Salter 8900 jet nebulizer placed in-line in a pediatric ventilator model, under various operating ...
Marchenkov Yury V - - 2010
The objective of this study was to measure the efficacy of biphasic positive airway pressure (BIPAP) and synchronized intermittent mandatory ventilation (SIMV) with alveolar recruitment maneuvers (ARMs) in patients with acute lung injury (ALI) and concomitant pneumothorax. Seventy-four patients with ALI and concomitant pneumothorax secondary to blunt thoracic injury were ...
Lowhagen K - - 2010
Regional tidal volume distribution and end-expiratory lung volume (EELV) distribution in patients with acute lung injury and acute respiratory distress syndrome (ALI, ARDS) have previously been investigated using computed tomograpy and electric impedance tomography (EIT). In the present study, we utilized the high temporal resolution of EIT to assess intratidal ...
Sinha Aparna - - 2010
Background:  In this randomized prospective study, peak airway pressure (PAP) and gastric insufflation were compared between volume control ventilation (VCV) and pressure control ventilation (PCV) using size-1 laryngeal mask airway (LMA) in babies weighing 2.5-5 kg. Methods:  Forty ASA I and II children, weighing 2.5-5 kg, undergoing elective infraumbilical surgeries (duration < 60 min) were ...
Oscroft Nicholas Stephen - - 2010
Recent randomised controlled trials suggest non-invasive ventilation may offer benefit in the long-term management of ventilatory failure in stable COPD. The best mode of ventilation is unknown and newer volume assured modes may offer advantages by optimising ventilation overnight when treatment is delivered. This study compares volume assured with pressure ...
Chatburn Robert L - - 2010
As hospitals begin to implement electronic medical records, the inadequacies of legacy paper charting systems will become more evident. One area of particular concern for respiratory therapists is the charting of mechanical ventilator settings. Our profession's lack of a standardized and generally accepted taxonomy for mechanical ventilation leaves us with ...
Chikata Yusuke - - 2010
High-frequency oscillatory ventilation (HFOV) has recently been applied to acute respiratory distress syndrome patients. However, the issue of humidification during HFOV has not been investigated. In a bench study, we evaluated humidification during HFOV for adults to test if adequate humidification was achieved in 2 different HFOV systems. We tested ...
Kim Lee Kyoung - - 2010
An 82-year-old female, with left femoral neck fracture was scheduled for left hip hemiarthroplasty, under spinal anaesthesia. She had been suffering from diabetes, hypertension, lung cancer and was previously treated with IV aminophylline for respiratory insufficiency. She was given spinal anaesthesia with 10 mg of 0.5% hyperbaric bupivacaine, and T6 ...
Acar B - - 2010
The aim of this study was to determine middle ear pressure changes during the operation performed under anaesthesia induced by isoflurane or desflurane. This was a prospective, case-control study. A total of 38 children with no middle ear pathology scheduled for inguinal hernia surgery were included in the study. Group ...
Haleem Abdul - - 2011
Newer bedside pulmonary mechanics using conventional ventilators allow for CONTINUOUS serial determinations of tidal volume (V (T)). We sought to determine whether the degree of pulmonary hypoplasia could be measured using bedside pulmonary graphics and whether survival could be predicted in potential extracorporeal membrane oxygenation (ECMO) candidates. Data on all ...
Frizzola Meg M Nemours Children's Clinic of Wilmington, The Nemours Foundation, Alfred I. duPont Children's Hospital, Primary Research Institution, Wilmington, Delaware 19803, USA. - - 2011
High-flow nasal cannula therapy (HFNC) has been shown to be more effective than continuous positive airway pressure (CPAP) in reducing intubations and ventilator days. HFNC likely provides mechanisms to support respiratory efficiency beyond application of distending pressure. We reason that HFNC washout of nasopharyngeal dead space impacts CO(2) removal along ...
Choi Woo-Sung - - 2011
Pressure-controlled manometric discography is used by clinicians to evaluate discogenic pain. However, some would improve diagnostic accuracy. The goal of this study was to investigate potential confounding factors that might affect discographic results. Pressure differences depending on different speed of injection, lengths of connecting tubing and locations of sensors were ...
Galia F - - 2010
INTRODUCTION: Carbon dioxide arterial pressure (PaCO₂) can be grossly estimated by end-tidal CO₂ (etCO₂). Such principle is used into a closed-loop system to estimate alveolar ventilation in an automated system of ventilation (SmartCare®). The purpose of this study was to assess whether taking the maximal value instead of the averaged ...
Chan Gregory S H - - 2010
A rabbit model of endotoxaemia was employed to study the regional changes in photoplethysmogram (PPG) waveform and its low frequency fluctuations, and how they are related to the physiological events during the time course of endotoxic shock. Endotoxin (1 mg kg(-1) lipopolysaccharide) was injected into eight anaesthetized and mechanically ventilated ...
Albert Scott - - 2010
BACKGROUND: Ventilator strategies that maintain an "open lung" have shown promise in treating hypoxemic patients. We compared three "open lung" strategies with standard of care low tidal volume ventilation and hypothesized that each would diminish physiologic and histopathologic evidence of ventilator induced lung injury (VILI). MATERIALS AND METHODS: Acute lung ...
Ocon Anthony J AJ Department of Physiology, New York Medical College, The Center for Hypotension, 19 Bradhurst Ave., Ste. 1600S, Hawthorne, NY 10532, - - 2011
Loss of the cardiovagal baroreflex (CVB), thoracic hypovolemia, and hyperpnea contribute to the nonlinear time-dependent hemodynamic instability of vasovagal syncope. We used a nonlinear phase synchronization index (PhSI) to describe the extent of coupling between cardiorespiratory parameters, systolic blood pressure (SBP) or arterial pressure (AP), RR interval (RR), and ventilation, ...
Qiu Feng - - 2010
During extracorporeal life support (ECLS), a large portion of the hemodynamic energy is lost to various components of the circuit. Minimization of this loss in the circuit leads to better vital organ perfusion and decreases the risk of systemic inflammation. In this study, we evaluated the hemodynamic properties of differing ...
Bossé Dominick - - 2010
This study aimed to assess the precision and the interchangeability of cardiac index measurement by transpulmonary thermodilution (TPTD) and pulmonary thermodilution (PTD) devices on a neonatal animal model of acute respiratory distress syndrome under total liquid ventilation (TLV) and conventional mechanical ventilation (CMV). After acute respiratory distress induction by tracheal ...
Denard Patrick J - - 2010
Subacromial decompression is a common surgical procedure that has historically included coracoacromial ligament resection. However, recent reports have advocated preserving the coracoacromial ligament to avoid the potential complication of anterosuperior escape. The optimal subacromial decompression would achieve a smooth coracoacromial arch and decreased rotator cuff contact pressures while preserving the ...
Sendasgupta Chaitali - - 2010
The perioperative management of patients with mediastinal mass is challenging. Complete airway obstruction and cardiovascular collapse may occur during the induction of general anaesthesia, tracheal intubation, and positive pressure ventilation. The intubation of trachea may be difficult or even impossible due to the compressed, tortuous trachea. Positive pressure ventilation may ...
Nam Yoontae - - 2010
Respiratory dynamics may be monitored and evaluated indirectly by measuring the peak inspiratory pressure and plateau pressure. In this study, the respiratory dynamics of patients undergoing spinal surgery using a Jackson surgical table were observed with a device after converting their position from supine to prone. The effects of the ...
Suh Min Kyo - - 2010
Conventional pelviscopic surgery requires pneumoperitoneum with CO(2) gas insufflation and lithotomy-Trendelenburg position. Pneumoperitoneum and Trendelenburg position may influence intraoperative respiratory mechanics in anesthetic management. This study was conducted to investigate the influence of pneumoperitoneum and Trendelenburg position on respiratory compliance and ventilation pressure. Twenty-five patients scheduled for elective gynecologic laparoscopy ...
Tang Patricia - - 2011
Abstract Background: Poor sputum clearance is a common problem encountered in intubated patients, which may cause airway obstruction, hypoxaemia, and increased risk of lower respiratory tract infection. This may result in longer intensive care unit (ICU) stay or even death. Dry powder mannitol has been shown to improve sputum clearance, ...
Romoli Marco - - 2010
In the auricular maps introduced over the past 50 years by the French and Chinese schools, most organs and systems overlap consistently. One exception is the reproductive system, which shows a markedly different somatotopic representation-for example, for the uterus and the ovary. To identify the distribution of points with increased ...
Calzia Enrico - - 2010
The current practice of mechanical ventilation comprises the use of the least inspiratory O2 fraction associated with an arterial O2 tension of 55 to 80 mm Hg or an arterial hemoglobin O2 saturation of 88% to 95%. Early goal-directed therapy for septic shock, however, attempts to balance O2 delivery and ...
Gattinoni Luciano - - 2010
Since its introduction into the management of the acute respiratory distress syndrome, mechanical ventilation has been so strongly interwoven with its side effects that it came to be considered as invariably dangerous. Over the decades, attention has shifted from gross barotrauma to volutrauma and, more recently, to atelectrauma and biotrauma. ...
Khan Muhamad Faisal - - 2010
Intubation in the lateral position is desirable in several conditions. We compared the technical ease and hemodynamic response to laryngoscopy and intubation in the lateral (group L) and supine (group S) positions in 120 patients with normal airway in a prospective randomized controlled study. This was a randomized, controlled observational ...
Del Sorbo Lorenzo - - 2010
Mechanical ventilation is a lifesaving treatment delivered to patients with a wide spectrum of medical and surgical diseases. However, significant limitations of the clinical application of mechanical ventilation in current practice have emerged, prompting the definition of novel therapeutic perspectives, especially concerning the prevention and treatment of acute respiratory failure. ...
Dursunoğlu Neşe - - 2010
It is very important to decrease pulmonary artery pressure (PAP) in patients with chronic obstructive pulmonary disease (COPD) in order to prevent progression to right heart failure. We showed an acute improvement of PAP by non-invasive positive pressure ventilation (NPPV) treatment in patients with hypercapnic respiratory failure. In 26 patients ...
Gaszyński Tomasz M - - 2010
Morbid obesity BMI 40 kg mL-2 is associated with several changes in anatomy and physiology of the respiratory system. Respiratory work is increased whereas compliance of the chest wall and lungs is decreased. Increased intra-abdominal pressure compresses the diaphragm and reduces its movability. Abdominal opening should influence respiratory mechanics. Forty-seven ...
Sharma Bimla B Sr. Consultant, Department of Anaesthesiology, Pain & Preoperative Medicine, Sir Ganga Ram Hospital, Old Rajinder Nagar, New Delhi-110060, - - 2010
Supraglottic airway devices (SADs), such as ProSealTM laryngeal mask airway (PLMA), which produce high oropharyngeal seal pressure (OSP) and have the facility for gastric decompression have been used in laparoscopic procedures. i-gel is a new SAD which shares these features with the PLMA. This study was designed to compare the ...
Pusapati Raju N RN Assistant Professor, Department of Anaesthesiology and Critical Care, Mahatma Gandhi Medical College & Research Institute, Puducherry, 607 402, - - 2010
It is currently presumed that spinal anaesthesia can compromise respiratory muscle function during carbon dioxide (CO2) pneumoperitoneum. This observational study was designed to delineate the respiratory effects of CO2 pneumoperitoneum under spinal anaesthesia. PATIENTS #ENTITYSTARTX00026; Forty one patients undergoing elective gynecological laparoscopy were administered spinal anaesthesia with 15 mg heavy ...
Pitts Renée - - 2010
Leakage of oral secretions past endotracheal tubes (ETT) has been implicated in ventilator associated pneumonia. The aim of this bench study was to compare the ability of current generation ETT cuffs to prevent fluid leakage and to determine the specific mechanical ventilator settings that affect movement of fluid across an ...
Zehlicke T - - 2011
Middle ear pressure depends widely on the function of the eustachian tube. Tube dysfunction is often a trigger for middle ear diseases like chronic otitis media but also for barotrauma. Patients with impaired tubal function should not be exposed to situations with extreme pressure changes. Until today, there is no ...
Reichenbach Tobias - - 2010
The inner ear achieves a wide dynamic range of responsiveness by mechanically amplifying weak sounds. The enormous mechanical gain reported for the mammalian cochlea, which exceeds a factor of 4000, poses a challenge for theory. Here we show how such a large gain can result from an interaction between amplification ...
Amatoury Jason - - 2010
We studied the impact of wall strain and surrounding pressure on the onset of airflow limitation in a thin-walled "floppy" tube model. A vacuum source-generated steady-state (baseline) airflow (0-350 ml/s) through a thin-walled latex tube (length 80 mm, wall thickness 0.23 mm) enclosed within a rigid, sealed, air-filled, cylindrical chamber ...
Cherng Chen-Hwan - - 2010
Nasotracheal tube induced nasal ala pressure sores or necrosis during prolonged nasotracheal intubation have been reported, and it is a serious but preventable complication. Here we introduce a modified nasotracheal tube to prevent this complication. This modified nasotracheal tube is composed of two parts, an oral endotracheal tube and a ...
Kanoore Edul Vanina S - - 2010
To evaluate the impact of a recruitment manoeuvre (RM) on haemodynamics, gas exchange, and oxygen transport in patients with acute lung injury (ALI) an acute respiratory distress syndrome (ARDS) under mechanical ventilation. Prospective interventional study in the intensive care unit of a teaching hospital in Buenos Aires, Argentina. The study ...
Yuksel Sancak S Department of Otorhinolaryngology-Head and Neck Surgery, University of Texas Medical School at Houston, 6431 Fannin Street, MSB 5.036, Houston, TX 77030, USA. - - 2011
Past in vivo studies in humans showed that the tympanic membrane (TM) is permeable to physiological gases. Animal studies show that transTM CO(2) conductance is increased by TM pathology. The objective of the study was to determine if transTM CO(2) exchange in humans is affected by atrophic and sclerotic pathologies. ...
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