scholarly journals ACTUAL INSPIRED OXYGEN CONCENTRATION AND OXYGEN SATURATION DURING PRETERM RESUSCITATION

2019 ◽  
Vol 55 (S1) ◽  
pp. 51-51
Keyword(s):  
Oxygen Saturation ◽  
Oxygen Concentration ◽  
Inspired Oxygen

Effect of hyperoxia and hypoxia on exercise-induced breathlessness in normal subjects

1988 ◽  
Vol 74 (5) ◽  
pp. 531-537 ◽  
Author(s):  
N. Chronos ◽  
L. Adams ◽  
A. Guz
Keyword(s):  
Oxygen Saturation ◽  
Oxygen Concentration ◽  
Time Course ◽  
Minute Ventilation ◽  
Arterial Oxygen Saturation ◽  
Normal Subjects ◽  
Secondary Response ◽  
Arterial Oxygen ◽  
Air Breathing ◽  
Inspired Oxygen

1. The subjective changes accompanying alterations in inspired oxygen concentration during heavy exercise have been investigated single blind, in normal subjects. 2. In particular, the intensity of the sensation of breathlessness was quantified using a visual analogue scale and changes were compared with those in objective ventilatory measures. 3. Eleven subjects performed three steady-state workload exercise tests on different days and 100% O2, 15% O2 or air were randomly administered for a fixed interval during each test. 4. Compared with air breathing, all subjects felt less breathless during 100% O2 breathing, and ten of them felt more breathless when inspiring 15% O2; these changes were reversed on return to air breathing. 5. During and after 100% O2, the time course of changes in breathlessness was similar to those for ear arterial oxygen saturation and minute ventilation such that it could be a secondary response to either. However, during and after inspiration of 15% O2, changes in breathlessness occurred relatively more quickly than those in ventilation, more closely reflecting changes in oxygen saturation; this suggests that hypoxia, per se, could contribute to the genesis of this sensation. 6. Individual variability in breathlessness responses to exercise and changes in inspired oxygen concentration did not correlate with objective ventilatory changes; neither were changes in breathlessness in the group particularly associated with changes in respiratory frequency or tidal volume.

The Effects of Passive and Active Smoking on Brachial and radial Blood Pressure and Some Other Physical Factors in Healthy Young Adults

2017 ◽  
Vol 5 (3) ◽  
pp. 259
Author(s):  
Shireen H. Ramadhan ◽  
Shamil K. Talal ◽  
Wasfiya A. Moner
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Oxygen Saturation ◽  
Oxygen Concentration ◽  
Tobacco Smoke ◽  
Blood Pressure Measurement ◽  
Reference Level ◽  
Physical Factors ◽  
New Device ◽  
Active Smoker

Tobacco smoke is enormously harmful to human health, there’s no safe way to smoke. The primary objective of this study is to analyze the role of tobacco smoke compounds and their ability to damage the cardiovascular system and, in particular, to interfere with blood pressure (Brachial and radial pressure), heart rate and partly on the percentage blood Oxygen saturation. A new device has been manufactured which is unique for measuring the level of smoke, to obtained privies readings, the device had fixed to the first reference level آ and starting up from it. The effect of smoking has been studied on (26) male passive (26) active smoker volunteer, (14) female passive and (14) female active smoker participants. The results has been showed that the blood pressure and heart rate has been increased with increasing the number of cigarettes in both genders for passive and active smokers. However, this effect for male was more pronounced comparing with females for passive and active smokers. In the case of oxygen saturation concentration percentage, for males the change of oxygen concentration percentage was not stable. In other words, it was fluctuated with the number of cigarettes. But for females the oxygen concentration was decreased but not too much. This means that this effect was not pronounced. this study found آ that the most pronounced effect has been shown by male’s comparison to females for both passive and active smokers. As well as in nonsmoker’s males, the relation between heart rate and smoke level is inversely proportional. While in male and female smokers and female nonsmokers the relation is proportional. In all cases the relation between the smoke level and time of smoking is inversely proportional. Finally males& females are affected differently by tobacco use; the sensitivities to smoke for males are higher than in females for passive and active smokers in both brachial and radial blood pressure measurement.

Pneumothorax and Pneumomediastinum in Infants With ldiopathic Respiratory Distress Syndrome Receiving Continuous Positive Airway Pressure

PEDIATRICS ◽  
1975 ◽  
Vol 55 (4) ◽  
pp. 493-496
Author(s):  
Robert T. Hall ◽  
Philip G. Rhodes
Keyword(s):  
Respiratory Distress Syndrome ◽  
Respiratory Distress ◽  
Oxygen Concentration ◽  
Airway Pressure ◽  
Distress Syndrome ◽  
Underlying Mechanism ◽  
Treated Group ◽  
Controlled Study ◽  
Idiopathic Respiratory Distress Syndrome ◽  
Inspired Oxygen

A review of infants with idiopathic respiratory distress syndrome developing pneumomediastinum and pneumothorax reveals (1) an incidence of 20% in patients receiving CPAP with an 11% incidence in comparable infants not receiving this mode of therapy; (2) in the CAPA-treated group the occurrence was at a stage in the illness when the inspired oxygen concentration was being lowered and when ventilation was stable; (3) the inspired oxygen concentration in the CPAP group at the time of the PM and/or PT was 52% (± S.D. 15%) at a mean age of 33 hours (± S.D. 23 hr). These observations suggest that distending airway pressure creates excessive alveolar distention as an underlying mechanism of the air leak. It is recommended that distending airway pressure be lowered prior to achieving an inspired oxygen concentration of 60%. A controlled study is in progress to delineate the optimum distending airway pressures at specific inspired oxygen concentrations in order to reduce the incidence of alveolar rupture to a minimum.

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