Results 251 to 260 of about 102,250 (298)
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A comparison of changes in esophageal pressure and regional juxtacardiac pressures
Journal of Applied Physiology, 1990The relationship between esophageal pressure and juxtacardiac pressures was studied during positive end-expiratory pressure (PEEP) ventilation applied to both lungs or selectively to one lung. The experiments were performed in eight anesthetized dogs with balloon catheters in the esophagus and in the left and right pericardial and overlying pleural ...
O A, Smiseth, O, Veddeng
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How alterations in pleural pressure influence esophageal pressure
Journal of Applied Physiology, 1984Although esophageal pressures have been substituted for direct pleural pressure measurement in humans, we have investigated the validity of this approach under circumstances when left and right pleural pressures are not equal. Esophageal and bilateral pleural pressures in awake sheep were compared by using matched balloon catheters in close proximity.
A N, Hurewitz +3 more
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Clinical significance of esophageal variceal pressure in patients with esophageal varices
Journal of Hepatology, 1994In 40 patients with esophageal varices, esophageal variceal pressure was assessed endoscopically using a pneumatic pressure sensor. The effects of vasopressin or nitroglycerin on variceal pressure and endoscopic findings were also assessed in two groups of seven patients.
T, Bandoh +4 more
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Esophageal and Gastric Pressure Measurements
Respiratory Care, 2005The measurement of esophageal and gastric pressures with balloon-tipped catheters has been used with great success over the past half century to delineate the physiology of the mechanical respiratory system. Pleural pressure and abdominal pressure values estimated from esophageal and gastric pressure measurements allow analysis of lung and chest wall ...
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Esophageal Pressure in Acute Lung Injury
New England Journal of Medicine, 2009observed an improvement in oxygenation in patients with acute lung injury that was man -aged by estimating transpulmonary pressure, there was an extrapulmonary (i.e., abdominal) cause of the acute respiratory distress syndrome (ARDS) in a high proportion of patients in their study (39%).
Dimitri, Gusmao +2 more
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Intraluminal Esophageal Pressures in Speaking Laryngectomees
Annals of Otology, Rhinology & Laryngology, 2010Objectives The objective of the present study was to evaluate intraluminal esophageal pressure during voice and speech emission in speaking laryngectomees with a tracheoesophageal prosthesis. Methods In our prospective analysis in a tertiary-care academic hospital, 25 laryngectomees were divided into 2 groups: 11 speaking individuals with a ...
Lílian, Aguiar-Ricz +4 more
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Topography of the esophageal peristaltic pressure wave
American Journal of Physiology-Gastrointestinal and Liver Physiology, 1991Topographic plots constructed from conventional esophageal manometric waves were examined in 12 healthy volunteers to better understand spatial relationships of peristaltic contractions. Typical postdeglutitive waves were spatially interconnected using a computerized gridding and plotting system.
R E, Clouse, A, Staiano
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Resting pressures in the lower esophageal sphincter
The American Journal of Digestive Diseases, 1974Interdeglutive pressures of the lower esophageal sphincter (LES) were studied by nonpullthrough techniques in 36 volunteers. Resting pressures did not remain at the high levels observed when the LES was entered. In 30 studies a gradual protracted decay ranging from 5 to 18 mm Hg was observed. These studies suggest that the LES may not pose a continuous
A A, Bloom +4 more
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Estimating subglottal pressure from esophageal pressure
The Journal of the Acoustical Society of America, 1986A continuing problem in speech research has been the measurement of air pressure in the trachea during the speech act without invading the trachea itself. A common but problematic approach has been to use a pressure measured in the esophagus, at the level of the trachea, via a small balloon at the end of a catheter which leads to an external transducer.
Martin Rothenberg, James Mahshie
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Lidocaine inhibition of esophageal peristalsis and lower esophageal sphincter pressure in baboons
Digestive Diseases and Sciences, 1985Intravenous lidocaine was infused at 0.82 ml/min in a concentration of 1.2 mg/ml (2.3 mg/kg) for 120 min in awake chair-restrained baboons (Papio anubis), and measurements of esophageal peristalsis and LES pressure were compared before and after lidocaine or control infusions. Lidocaine produced a progressive and significant (P less than 0.05) decrease
D R, Sinar +4 more
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