scholarly journals Arterial blood gas analysis or oxygen saturation in the assessment of acute asthma?

Thorax ◽  
1995 ◽  
Vol 50 (2) ◽  
pp. 186-188 ◽  
Author(s):  
D M Carruthers ◽  
B D Harrison
Keyword(s):  
Oxygen Saturation ◽  
Acute Asthma ◽  
Blood Gas Analysis ◽  
Gas Analysis ◽  
Blood Gas ◽  
Arterial Blood Gas ◽  
Arterial Blood ◽  
Arterial Blood Gas Analysis

scholarly journals Sleep-disordered breathing in patients with COPD and mild hypoxemia: prevalence and predictive variables

2017 ◽  
Vol 43 (3) ◽  
pp. 176-182 ◽  
Author(s):  
José Laerte Rodrigues Silva Júnior ◽  
Marcus Barreto Conde ◽  
Krislainy de Sousa Corrêa ◽  
Helena Rabahi ◽  
Arthur Alves Rocha ◽  
...  
Keyword(s):  
Oxygen Saturation ◽  
Sleep Disordered Breathing ◽  
Blood Gas Analysis ◽  
Gas Analysis ◽  
Blood Gas ◽  
Arterial Blood Gas ◽  
Arterial Blood ◽  
Nocturnal Hypoxemia ◽  
Arterial Blood Gas Analysis ◽  
Disordered Breathing

ABSTRACT Objective: To infer the prevalence and variables predictive of isolated nocturnal hypoxemia and obstructive sleep apnea (OSA) in patients with COPD and mild hypoxemia. Methods: This was a cross-sectional study involving clinically stable COPD outpatients with mild hypoxemia (oxygen saturation = 90-94%) at a clinical center specializing in respiratory diseases, located in the city of Goiânia, Brazil. The patients underwent clinical evaluation, spirometry, polysomnography, echocardiography, arterial blood gas analysis, six-minute walk test assessment, and chest X-ray. Results: The sample included 64 patients with COPD and mild hypoxemia; 39 (61%) were diagnosed with sleep-disordered breathing (OSA, in 14; and isolated nocturnal hypoxemia, in 25). Correlation analysis showed that PaO2 correlated moderately with mean sleep oxygen saturation (r = 0.45; p = 0.0002), mean rapid eye movement (REM) sleep oxygen saturation (r = 0.43; p = 0.001), and mean non-REM sleep oxygen saturation (r = 0.42; p = 0.001). A cut-off point of PaO2 ≤ 70 mmHg in the arterial blood gas analysis was significantly associated with sleep-disordered breathing (OR = 4.59; 95% CI: 1.54-13.67; p = 0.01). The model showed that, for identifying sleep-disordered breathing, the cut-off point had a specificity of 73.9% (95% CI: 51.6-89.8%), a sensitivity of 63.4% (95% CI: 46.9-77.9%), a positive predictive value of 81.3% (95% CI: 67.7-90.0%), and a negative predictive value of 53.1% (95% CI: 41.4-64.4%), with an area under the ROC curve of 0.69 (95% CI: 0.57-0.80), correctly classifying the observations in 67.2% of the cases. Conclusions: In our sample of patients with COPD and mild hypoxemia, the prevalence of sleep-disordered breathing was high (61%), suggesting that such patients would benefit from sleep studies.

scholarly journals The Predicitive Value of Arterial Blood Gas Analysis and Radiologic Scores in ARDS

1985 ◽  
Vol 32 (2) ◽  
pp. 112-118
Author(s):  
Seong Gyu Hwang ◽  
Su Taik Uh ◽  
Byung Soo Ahn ◽  
Dong Cheul Han ◽  
Choon Sik Park ◽  
...  
Keyword(s):  
Blood Gas Analysis ◽  
Gas Analysis ◽  
Blood Gas ◽  
Arterial Blood Gas ◽  
Arterial Blood ◽  
Arterial Blood Gas Analysis
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