We studied the airway gas exchange properties of five inert gases with different blood solubilities in the lungs of anesthetized sheep. Animals were ventilated through a bifurcated endobronchial tube to allow independent ventilation and collection of exhaled gases from each lung. An aortic pouch at the origin of the bronchial artery was created to control perfusion and enable infusion of a solu...

BACKGROUND The gaseous headspace above naïve Escherichia Coli (E. coli) cultures and whole human blood inoculated with E. coli were collected and analyzed for the presence of trace gases that may have the potential to be used as novel, non-invasive markers of infectious disease. METHODS The naïve E. coli culture, LB broth, and human whole blood or E. coli inoculated whole blood were incubated...

OBJECTIVE Although incentive spirometry (IS) is frequently used to prevent postoperative pulmonary complications, its efficacy in patients with COPD has not been documented. The aim of this study was to evaluate the effects of IS on pulmonary function tests, arterial blood gases, dyspnoea and health-related quality of life in patients hospitalized for COPD. METHODOLOGY A total of 27 consecuti...

Both metabolic rate and pulmonary ventilation change throughout 24h with a circadian pattern. Because their changes occur almost in synchrony and by a similar amount, blood gases may remain steady within a narrow range. We tested this possibility in five cows (Bos taurus, Bruna Italiana breed), maintained in a stable at 29 degrees C, under natural light-dark (LD) regime, by measuring arterial b...

INTRODUCTION Tracheotomy is widely performed in the intensive care unit after long-term oral intubation. The present study investigates the immediate influence of tracheotomy on respiratory mechanics and blood gases during mechanical ventilation. METHODS Tracheotomy was performed in 32 orally intubated patients for 10.5 +/- 4.66 days (all results are means +/- standard deviations). Airway pre...

abstract background: after coronary artery bypass surgery, pulmonary complications and oxygenation disorders are common, which have an important role in mortality and morbidity. different methods are used for the improvement of pulmonary function and oxygenation, of which incentive spirometry (is) has been investigated here. the aim of this study is to evaluate the effects of is on arterial blo...