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 ...

Oxygen therapy is widely used in emergency and critical care settings, while there is little evidence on its real therapeutic effect. The study aimed to explore the impact of arterial oxygen partial pressure (PaO2) on clinical outcomes in patients with sepsis. A large clinical database was employed for the study. Subjects meeting the diagnostic criteria of sepsis were eligible for the study. Al...

We studied the possibility of predicting PaO2 during exercise of a given oxygen uptake (VO2) from resting pulmonary function tests (PFTs) in patients with chronic obstructive pulmonary disease (COPD). The three-minute incremental treadmill exercise was performed with serial measurements of PaO2 via intra-arterial catheter in 46 patients (mean FEV1 = 1.09 +/- 0.49L, mean FEV1/FVC = 44 +/- 15 per...

It is still unclear whether lung edema can be monitored by microwave reflectometry and whether the measured changes in lung dry matter content (DMC) are accompanied by changes in PaO2 and in pro- to anti-inflammatory cytokine expression (IFN-gamma and IL-10). Right rat lung hili were cross-clamped at 37 degrees C for 0, 60, 90 or 120 min ischemia followed by 120 min reperfusion. After 90 min (D...

OBJECTIVES To derive a relationship between the SpO2/FIO2 ratio and PaO2/FIO2 ratio across the entire range of SpO2 values (0-100%) and to evaluate whether mortality prediction using the Pediatric Index of Mortality-3 can be improved by the use of PaO2/FIO2 values derived from SpO2/FIO2. DESIGN Retrospective analysis of prospectively collected data. SETTING A regional PICU transport service...

INTRODUCTION Cyclic alveolar recruitment/derecruitment (R/D) is an important mechanism of ventilator-associated lung injury. In experimental models this process can be measured with high temporal resolution by detection of respiratory-dependent oscillations of the paO2 (ΔpaO2). A previous study showed that end-expiratory collapse can be prevented by an increased respiratory rate in saline-lavag...

background pulse-oximetry (spo2) widely uses as a help tools for therapeutic interventions in the pediatric intensive care units (picu). the aim of this study was to evaluate the validity of spo2 in measuring of oxygenation index (oi) in children. materials and methods in a descriptive analytical study, 100 patients who were admitted to picu tabriz children's hospital were studied. oxygena...

Peri-operative partial arterial oxygen tension (PaO2) was monitored in 20 patients undergoing total hip replacement. Three distinct groups emerged on analysis of the arterial oxygen tensions. In group I there was no initial decrease in PaO2 but it rose above baseline level towards the end of the procedure. In group II there was a distinct fall in PaO2 during the acetabular and femoral stages of...

UNLABELLED BACKGROUND AND METHDS: Alveolar recruitment maneuver (ARM) is indicated in the treatment of intraoperative atelectasis. The objective of the present study was to compare two techniques of ARM using the response of the PaO2/FiO2 ratio and [PaO2 + PaCO2] in patients with grade III obesity. METHODS This was an open prospective study with adult patients with grade III obesity who under...