نتایج جستجو برای: arterial oxygen pressure
تعداد نتایج: 678217 فیلتر نتایج به سال:
The theoretic effect of increased values for the oxygen pressure at an oxygen saturation of 50 percent on oxygen delivery in arterial hypoxemia due to right-to-left shunting was analyzed using a mathematical model of the oxygen-hemoglobin equilibrium curve. We found that, regardless of the size of the shunt, a rightward shift of the curve resulted in increased mixed venous oxygen tension, incre...
despite improvement of mechanical ventilation devices for infants, lung injury still causes morbidity and mortality in many cases. to determine the effect of high frequency oscillatory ventilation (hfov) in infants with severe respiratory failure, 10 neonates were evaluated prospectively. mean gestational age of these patients was 35 weeks and alveolar-arterial oxygen gradient (a-ado2) and the ...
Background : Chronic Obstructive Pulmonary Disease (COPD) represents a major public health problem. The course of COPD is characterized by episodic periods of worsening symptoms, termed exacerbations. Supplemental oxygen should be given to patients with COPD exacerbation without causing CO2 retention. Arterial blood gas sampling is the gold standard for monitoring adequate oxygenation and for...
Despite improvement of mechanical ventilation devices for infants, lung injury still causes morbidity and mortality in many cases. To determine the effect of high frequency oscillatory ventilation (HFOV) in infants with severe respiratory failure, 10 neonates were evaluated prospectively. Mean gestational age of these patients was 35 weeks and alveolar-arterial oxygen gradient (A-aDo2) and the ...
Background and purpose: Candidates for cataract surgery have high anxiety and worry for various reasons which may cause changes in their hemodynamic parameters. Maintaining hemodynamic stability during anesthesia and surgery is very important. This study aimed at comparing the effects of listening to nature sounds and lavender inhalation on hemodynamic parameters in patients undergoing cataract...
The cardiorespiratory responses to an i.v. infusion of dobutamine hydrochloride were assessed in eight anaesthetized, mechanically ventilated dogs. As the rate of infusion of dobutamine was increased from 2 to 30 microgram kg-1 min-1, there was a progressive decrease in arterial pressure, pulmonary wedge pressure and arterial pH. There was a significant decrease in arterial oxygen tension at th...
Oxygen is an essential part of the most important metabolic pathways in aerobic organisms. Oxygen delivery is merely dependent on blood, rendering blood loss a devastating event. Traumatic pre-hospital liver bleeding is a major cause of early trauma deaths in human and animals, with no established therapeutic method yet. Increasing intra-abdominal pressure (IAP) has been shown to reduce liver b...
abstract posttraumatic intravasation of fat and debris can lead to a cascade of events. hydroxyethyl starches (hes) markedly suppress neutrophil influx by decreasing pulmonary capillary permeability and facilitating tissue oxygenation by improving microcirculation. it was hypothesized that in hypoxemic femur injury patients undergoing operative stabilization, hes administration will prevent the...
SUMMARY Arterial and mixed venous oxygen tensions were measured in 24 patients following acute myocardial infarction while they were breathing air and 100% oxygen. Total venous admixture and the right-to-left shunt during 100% oxygen breathing were calculated. These data were related to the pulmonary arterial diastolic pressure, the cardiac index, and the central blood volume. Patients with myo...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید