Search results for "Respiratory system"
showing 10 items of 1829 documents
Respiratory snorkel and valve system for breath-by-breath gas analysis in swimming
2003
The present study aimed to compare a standard facemask (CM) and a newly modified swimming snorkel and valve system (SV) for breath-by-breath (BxB) gas analysis (K4 b2, Cosmed, Rome, Italy), and to validate the system under controlled laboratory conditions before being used in swimming. Nine healthy males performed two bouts of a stepwise exercise on an electrically braked stationary bicycle on separate days. Ventilatory and gas exchange parameters were analyzed using the same BxB portable system, with subjects breathing alternatively through the two different valves. Agreement between both methods was evaluated by Passing-Bablok regression analysis. The gas exchange values measured using th…
Effects of PEEP on Residual Vascularization in Oesophageal Substitution Gastroplasty by Surface Oximetry-Capnometry and Photoplethysmography
2003
<i>Objective:</i> To evaluate the effects of positive end-expiratory pressure (PEEP) on residual vascularization in gastric tubes for oesophageal replacement. <i>Design:</i> Experimental open study. <i>Materials:</i> Eleven mongrel dogs. <i>Methods:</i> Intestinal parietal blood flow was evaluated by photoplethysmography (PPG) and measurement of surface oxygen (PsO<sub>2</sub>) and carbon dioxide (PsCO<sub>2</sub>) tensions under basal conditions. After Akiyama’s tubular gastroplasty, three levels of PEEP were administered. At each level, fluids were infused to counter the drop in cardiac output. PPG, surface gas tensio…
Beneficial Effects of CPAP Treatment in High-risk Subgroups of OSA Patients: Some Evidence, at Last.
2018
the clinical and pathophysiological links between obstructive sleep apnea (OSA) and cardiovascular
Consensus document on community-acquired pneumonia in children. SENP-SEPAR-SEIP
2020
Community-acquired pneumonia (CAP) is a prevalent disease among children and is frequently associated with both diagnostic and therapeutic uncertainties. Consensus has been reached between SEPAR, SENP and SEIP, and their conclusions are as follows.
The effects of arterial CO2 on the injured brain: Two faces of the same coin
2021
Serum levels of carbon dioxide (CO2) closely regulate cerebral blood flow (CBF) and actively participate in different aspects of brain physiology such as hemodynamics, oxygenation, and metabolism. Fluctuations in the partial pressure of arterial CO2 (PaCO2) modify the aforementioned variables, and at the same time influence physiologic parameters in organs such as the lungs, heart, kidneys, and the gastrointestinal tract. In general, during acute brain injury (ABI), maintaining normal PaCO2 is the target to be achieved. Both hypercapnia and hypocapnia may comprise secondary insults and should be avoided during ABI. The risks of hypocapnia mostly outweigh the potential benefits. Therefore, i…
A randomized trial of quilizumab in adults with refractory chronic spontaneous urticaria
2016
Responsiveness and minimal important difference of the urticaria control test
2017
This study demonstrates the responsiveness of the Urticaria Control Test (UCT). Changes of its score by 3 points or more reflect a clinically relevant change of disease control (minimal important difference).
Efficacy of Reslizumab with Asthma, Chronic Sinusitis with Nasal Polyps and Elevated Blood Eosinophils
2016
New rules on driver licensing for patients with obstructive sleep apnea: European Union Directive 2014/85/EU
2016
Editorial, no abstract