Adenovirus and Parainfluenza Virus Infections
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Oxygen Saturation
Room air distribution
Oxygen therapy
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There is good evidence that the addition of home long-term continuous oxygen therapy for COPD increases survival rates in patients with severe hypoxemia (i.e., O2 saturation of less than 90 percent or partial pressure of arterial oxygen [PaO2] of less than 8 kPa per 60 mm Hg) but not in patients with moderate hypoxemia or nocturnal desaturation.
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The scientific evidence for the efficacy of oxygen therapy in acute hypoxemia is limited. In chronic hypoxemia continuous oxygen therapy appears to decrease mortality. Current indications for oxygen treatment are PaO(2) less than 60 in acute hypoxemia and less than 55 in chronic hypoxemia. Physical and physiological hazards of oxygen are reviewed. Three syndromes of pulmonary oxygen toxicity are described: tracheobronchitis, adult respiratory distress syndrome, and bronchopulmonary dysplasia.
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Objective: To study the relations of positions and Apneahypoxemia Index and Oxygen Saturation in patients with obstructive sleep apnea-hypoxemia syndrome. Methods: Retrospectively analyze polysomnogramphy results of 50 patients who were diagnosed with obstructive sleep apnea-hypoxemia syndrome,and compare sleep parameters when patients were supine with parameters when they were non-supine. Results: AHI in those patients then they were supine was much higher as compared with when they were sideways,and the time that patients' Oxygen Saturation 90% can be prolonged in evidence when they are sleeping from sideways to supinely (P0.01). Conclusion: These results suggest that the incidence of sleep apneahypoxemia and Oxygen Saturation can be reduced when patients were sleeping sideways.
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Long-term oxygen therapy (LTOT) is known since the second half of the present century. In Poland it was introduced in 1986. By the end of 1991, 37 regional LTOT centers, using almost 1000 oxygen concentrators as oxygen source, were organized all over the country. To LTOT are classified two groups of patients with the advanced chronic pulmonary disease complicated with fixed respiratory failure and frequently with cor pulmonale. One group consist of patients with severe hypoxemia (PaO2 < or = 7.3 kPa, i.e. < or = 55 mm Hg) accompanied by the signs of cor pulmonale or tissue hypoxia whereas another consists of patients with moderate hypoxemia (PaO2 7.4-7.8 kPa, i.e. 55-65 mm Hg). A 5-year history of the regional LTOT centres in Poland was assessed. According to questionnaires received from 27 centres, 971 patients (662 males and 309 females), aged 59.3 years on the average, were classified to the long-term oxygen therapy between August 1, 1986 and December 31, 1991. Six hundred fifty seven patients (67.6%) has COPD, 229 (23.6%) had non-COPD pulmonary disease, and 85 patients (8.8%)-other diseases. Six hundred forty four patients (66.3%) were given oxygen concentrators for severe hypoxemia and 327 patients (33.7%) for moderate hypoxemia wit co-existing signs of the cor pulmonale and tissue hypoxia. Mean time of oxygen use in 839 patients was 13.8 hours a day. Long-term oxygen therapy was ceased in 31 patients (3.2%).(ABSTRACT TRUNCATED AT 250 WORDS)
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Pulmonary heart disease
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Objective To find the best oxygen therapy for hypoxemia in serious head injury patients. Methods Sixty eight patients with serious head injury receiving oxygen therapy were randomly divided into 2 groups, rhinophore group and venoclysis group. The heart rate, blood pressure and blood oxygen pressures were observed before treatment and 30 min, 45 min, 60 min, 90 min after the treatment. Results The SaO2 was gradually increased in patients who were treated by venoclysis technique. There were significant differences in SaO2 and oxygen pressure between two groups. The heart rate, blood pressure,pH and PaCO2 revealed no difference. Conclusion Oxygen therapy by venoclysis can effectively and immediately improve the hypoxemia in patients with serious head injury.
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Context: Hypoxemia is a common and potentially lethal complication of acute respiratory infection in children under-fi ve, particularly among those with severe disease.Aims: The aim of this study was to determine the prevalence of hypoxemia in under-fi ve Sudanese children with pneumonia.Settings and Design: A cross-sectional study conducted in a pediatrics hospital in a developing country.Subjects and Methods: Data were collected using structured questionnaire and oxygen saturation was measured using a pulse oximeter.Hypoxemia was defi ned as arterial blood oxygen saturation <90%.Results: Of 150 studied patients, 86 (57.3%) were males and 46 (32%) were in the age group 2 to ≤12 months.Of the total number, 42.7% had hypoxemia (with pulse oximeter oxygen saturation <90%), out of them 36 (56.25%) were in the age group <2 months.Of the hypoxic patients, 30 (46.88%) had severe pneumonia, and 7 (10.94)had very severe pneumonia (P < 0.001).Conclusions: The prevalence of hypoxemia was 42.7% among the studied population.There was a signifi cant association between the hypoxemia and small age group and very severe pneumonia.In limited resource settings pulse oximeter can be used to correctly identify hypoxemia in under-fi ve children particularly among those diagnosed clinically as very severe pneumonia.
Pulse Oximetry
Oxygen Saturation
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Oxygen therapy
Supplemental oxygen
Hypoxia
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Abstract There is a great need for a calibrated test that can be used in coronary patients for diagnostic purposes and for evaluating the effect of drugs. A hypoxemia test with 7½% oxygen in nitrogen on mouthpiece, with continuous registration of the oxygen saturation of the blood, has been evaluated in 13 patients with coronary disease and in 5 normal subjects. The test usually gives a decline of the oxygen saturation of the blood to 70% or less, the level necessary to give a maximal positive response. The dispersion of oxygen saturation is rather great. During hypoxemia of short duration the heart rate and the cardiac output will increase, but will never compensate for the decline of oxygen saturation. The change in acid base equilibrium is very slight. No significant change of BP occurred during hypoxemia. The degree of oxygen saturation will therefore give a good indication of the coronary strain and may provide a reproducible and calibrated test for use in coronary insufficiency.
Oxygen Saturation
Saturation (graph theory)
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Pulse Oximetry
Oxygen Saturation
Arterial blood
Room air distribution
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