During mechanical ventilation in small animals a discrepancy between tidal volume applied through a piston ventilator and the measured volume displacement of the thorax occurs. Such differences, which can be as large as (10-30 %) depend on the mechanical properties of the lungs and thorax, as well as the volume and resistance of the tubing system. In this study we evaluate an adaptive controlle...

Dr KOULOURIS and co-workers [1] found that some patients with chronic obstructive pulmonary disease (COPD) and apparent expiratory flow-limitation during tidal breathing had increased expiratory flow during tidal breathing when negative pressure was applied to the airway. They concluded that flow could not have been limited during control tidal expirations. I thought that the shape of the flow-...

l. Oxygen consumption, ventilation frequency and tidal volume were measured simultaneously in two lizards, Varanus gouldii and Sauromalus hispidus, during rest and maximal activity. 2. Ventilation frequency and tidal volume are almost identical in these species. The greater oxygen consumption during activity of Vat-anus results from a greater oxygen extraction from ventilated air. 3. Increased ...

BACKGROUND Suboptimal bag ventilation in cardiopulmonary resuscitation (CPR) has demonstrated detrimental physiological outcomes for cardiac arrest patients. In light of recent guideline changes for resuscitation, there is a need to identify the efficacy of bag ventilation by prehospital care providers. The objective of this study was to evaluate bag ventilation in relation to operator ability ...

UNLABELLED BACKGROUND Thyroid volume (TV) has been found to be associated with age, anthropometry, smoking, iodine status and hyperinsulinemia. Hyperinsulinemia is frequent finding in patients with PCOS and has associations with TV. However, the TV has been evaluated only a few studies in patients with PCOS. Therefore, the aim of this study was to evaluate the biochemical and hormonal variab...

essentials of respiratory care, 4th edition. St. Louis:Mosby Elsevier; 2005:103. 13. L’Her E, Roy A. Bench tests of simple, handy ventilators for pandemics: performance, autonomy, and ergonomy. Respir Care 2011;56(6):751-760. 14. Lyazidi A, Thille AW, Carteaux G, Galia F, Brochard L, Richard JC. Bench test evaluation of volume delivered by modern ICU ventilators during volume-controlled ventila...

OBJECTIVE The purpose of this study was to explore the effects of three different ventilatory modes: volume controlled ventilation (VCV), pressure controlled ventilation (PCV) and pressure controlled ventilation-volume guaranteed (PCV-VG) on arterial oxygenation and airway pressure during one-lung ventilation (OLV) in elderly patients. METHODS We enrolled 66 patients who underwent thoracic su...

BACKGROUND Preoxygenation with tidal volume breathing for 3 min is commonly used technique. An end tidal expiratory oxygen concentration greater than 90% is considerd to be adequate for preoxygenation. The aim of this study was to check the effects of preoxygenation on elderly patients through the comparison with young patients during the 3 min tidal volume breathing technique. METHODS Sixty ...