scholarly journals Near-Infrared Spectroscopy With Vascular Occlusion Test May Not Be the Adequate Tool to Explore Microcirculation in Pulmonary Arterial Hypertension--Reply

2014 ◽  
Vol 59 (4) ◽  
pp. e68-e69
Author(s):  
S. Dimopoulos ◽  
S. Nanas ◽  
Keyword(s):  
Infrared Spectroscopy ◽  
Pulmonary Arterial Hypertension ◽  
Arterial Hypertension ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Vascular Occlusion ◽  
Vascular Occlusion Test ◽  
Occlusion Test ◽  
Pulmonary Arterial

scholarly journals Evaluation of Different Near-Infrared Spectroscopy Devices for Assessing Tissue Oxygenation with a Vascular Occlusion Test in Healthy Volunteers

2020 ◽  
Vol 57 (6) ◽  
pp. 341-347
Author(s):  
Jaeyeon Chung ◽  
Sang-Hwan Ji ◽  
Young-Eun Jang ◽  
Eun-Hee Kim ◽  
Ji-Hyun Lee ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Pairwise Comparison ◽  
Vascular Occlusion ◽  
Tissue Oxygen Saturation ◽  
Vascular Occlusion Test ◽  
Occlusion Test ◽  
Significant Difference ◽  
Post Hoc

Near-infrared spectroscopy devices can measure peripheral tissue oxygen saturation (StO<sub>2</sub>). This study aims to compare StO<sub>2</sub> using INVOS® and different O3™ settings (O3<sup>25:75</sup> and O3<sup>30:70</sup>). Twenty adults were recruited. INVOS® and O3™ probes were placed simultaneously on 1 side of forearm. After baseline measurement, the vascular occlusion test was initiated. The baseline value, rate of deoxygenation and reoxygenation, minimum and peak StO<sub>2</sub>, and time from cuff release to peak value were measured. The parameters were compared using ANOVA and Kruskal-Wallis tests. Bonferroni’s correction and Mann-Whitney pairwise comparison were used for post hoc analysis. The agreement between StO<sub>2</sub> of devices was evaluated using Bland-Altman plots. INVOS® baseline value was higher (79.7 ± 6.4%) than that of O3<sup>25:75</sup> and O3<sup>30:70</sup> (62.4 ± 6.0% and 63.7 ± 5.5%, respectively, <i>p</i> &#x3c; 0.001). The deoxygenation rate was higher with INVOS® (10.6 ± 2.1%/min) than with O3<sup>25:75</sup> and O3<sup>30:70</sup> (8.4 ± 2.2%/min, <i>p</i> = 0.006 and 7.5 ± 2.1%/min, <i>p</i> &#x3c; 0.001). The minimum and peak StO<sub>2</sub> were higher with INVOS®. No significant difference in the reoxygenation rate was found between the devices and settings. The time to reach peak after cuff deflation was faster with INVOS® (both <i>p</i> &#x3c; 0.001). Other parameters were similar. There were no differences between the different O3™ settings. There were differences in StO<sub>2</sub> measurements between the devices, and these devices should not be interchanged. Differences were not observed between O3™ device settings.

scholarly journals Dynamic near-infrared spectroscopy assessment as an important tool to explore pulmonary arterial hypertension pathophysiology

2017 ◽  
Vol 49 (1) ◽  
pp. 1602161 ◽  
Author(s):  
Marios Panagiotou ◽  
Ioannis Vogiatzis ◽  
Zafeiris Louvaris ◽  
Geeshath Jayasekera ◽  
Alison McKenzie ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Pulmonary Arterial Hypertension ◽  
Arterial Hypertension ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Pulmonary Arterial
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