OBJECTIVE To compare ideal PaO2 with PaO2 found, ideal PaO2/FiO2 of room air with the one found, and ideal FiO2 with FiO2 found in mechanically ventilated elderly patients. METHODS Cross-sectional study that evaluated elderly mechanically ventilated patients for at least 72 hours and who underwent three subsequent blood gas analyses. RESULTS The sample consisted of 48 elderly with mean age ...

Definition of Respiratory Failure using PaO2 alone is confounded when patients are commenced on oxygen therapy prior to arterial blood gas (ABG) measurement. Furthermore, classification of Respiratory Failure as Type 1 or Type 2 using PaCO2 alone can give an inaccurate account of events as both types can co-exist. 100 consecutive presentations of acute respiratory distress were assessed initial...

OBJECTIVE Cyanotic patients have potentially decreased tissue oxygen tension. Cytochrome oxidase catalyzes the reduction of oxygen and is integral to adenosine triphosphate production. Cytochrome oxidase subunit I, the active site, is encoded by mitochondrial DNA. Using a newborn swine model of chronic hypoxemia, we evaluated ventricular cytochrome oxidase subunit I mRNA and protein expression ...

conclusions transdermal wound oxygen therapy can effectively promote wound healing in patients with pressure ulcers. results after 12 days of wound oxygen therapy, the number of patients with complete wound healing in the experimental group was significantly greater than that of the control group. moreover, the total mean of wound area in the experimental group was significantly lower than that...

OBJECTIVE To test the vasodilatory response of the pulmonary vascular bed in children with pulmonary hypertension. DESIGN Prospective dose response study in which the effects of inhaled nitric oxide (NO) are compared with those of oxygen and intravenous prostacyclin. PATIENTS AND INTERVENTIONS The vasodilator test was performed in 20 patients in whom mean pulmonary artery pressure (PAPm) wa...

This study addressed the effects of apnea in air and apnea with face immersion in cold water (10 degrees C) on the diving response and arterial oxygen saturation during dynamic exercise. Eight trained breath-hold divers performed steady-state exercise on a cycle ergometer at 100 W. During exercise, each subject performed 30-s apneas in air and 30-s apneas with face immersion. The heart rate and...