Comparing finger and forehead sensors to measure oxygen saturation in people with chronic obstructive pulmonary disease
Background and objective: Oxyhaemoglobin saturation of arterial blood is commonly measured using a finger sensor attached to a pulse oximeter (SpO2). We sought to compare SpO2 measured using finger and forehead sensors with oxyhaemoglobin saturation in arterialized capillary samples (ACS) in people...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
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Wiley-Blackwell Publishing Asia
2013
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| Online Access: | http://hdl.handle.net/20.500.11937/9079 |
| _version_ | 1848745845349941248 |
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| author | Wilson, Stephanie Cecins, Nola Jenkins, Sue Melang, Michelle Singh, B. Hill, Kylie |
| author_facet | Wilson, Stephanie Cecins, Nola Jenkins, Sue Melang, Michelle Singh, B. Hill, Kylie |
| author_sort | Wilson, Stephanie |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Background and objective: Oxyhaemoglobin saturation of arterial blood is commonly measured using a finger sensor attached to a pulse oximeter (SpO2). We sought to compare SpO2 measured using finger and forehead sensors with oxyhaemoglobin saturation in arterialized capillary samples (ACS) in people with chronic obstructive pulmonary disease (COPD) during exercise.Methods: During aerobic exercise, SpO2 was measured continuously by two pulse oximeters: one connected to a finger sensor and to a forehead sensor. Before and after the task, ACS were collected to provide a minimally invasive reference measure of oxyhaemoglobin saturation. Patients with COPD were eligible for inclusion if they desaturated when walking by >4% from resting levels to <90%. Current smokers and those prescribed supplemental oxygen were excluded.Results: Fourteen participants completed the study (forced expiratory volume in 1 s = 35 ± 10% predicted). Compared with ACS, SpO2 measured via the finger sensor was 2% lower (limit of agreement 3%), and SpO2 measured via the forehead sensor was 2% higher (limit of agreement 4%). Differences were not systematic. The change in oxygen saturation during exercise was similar among the finger sensor (−7; 95% confidence interval (CI): −4 to −10%), forehead sensor (−7; 95% CI: −3 to −10%) and ACS (−6; 95% CI: −3 to −9%).Conclusions: Oxygen saturation measured using the forehead sensor was higher than that measured in ACS. Assuming that oxygen saturation in ACS is slightly less than arterial blood, forehead sensors may yield measures more concordant with arterial blood. Both sensors detected exercise-induced desaturation. |
| first_indexed | 2025-11-14T06:23:50Z |
| format | Journal Article |
| id | curtin-20.500.11937-9079 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:23:50Z |
| publishDate | 2013 |
| publisher | Wiley-Blackwell Publishing Asia |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-90792017-09-13T14:50:55Z Comparing finger and forehead sensors to measure oxygen saturation in people with chronic obstructive pulmonary disease Wilson, Stephanie Cecins, Nola Jenkins, Sue Melang, Michelle Singh, B. Hill, Kylie oximetry exercise hypoxaemia blood chronic obstructive pulmonary disease Background and objective: Oxyhaemoglobin saturation of arterial blood is commonly measured using a finger sensor attached to a pulse oximeter (SpO2). We sought to compare SpO2 measured using finger and forehead sensors with oxyhaemoglobin saturation in arterialized capillary samples (ACS) in people with chronic obstructive pulmonary disease (COPD) during exercise.Methods: During aerobic exercise, SpO2 was measured continuously by two pulse oximeters: one connected to a finger sensor and to a forehead sensor. Before and after the task, ACS were collected to provide a minimally invasive reference measure of oxyhaemoglobin saturation. Patients with COPD were eligible for inclusion if they desaturated when walking by >4% from resting levels to <90%. Current smokers and those prescribed supplemental oxygen were excluded.Results: Fourteen participants completed the study (forced expiratory volume in 1 s = 35 ± 10% predicted). Compared with ACS, SpO2 measured via the finger sensor was 2% lower (limit of agreement 3%), and SpO2 measured via the forehead sensor was 2% higher (limit of agreement 4%). Differences were not systematic. The change in oxygen saturation during exercise was similar among the finger sensor (−7; 95% confidence interval (CI): −4 to −10%), forehead sensor (−7; 95% CI: −3 to −10%) and ACS (−6; 95% CI: −3 to −9%).Conclusions: Oxygen saturation measured using the forehead sensor was higher than that measured in ACS. Assuming that oxygen saturation in ACS is slightly less than arterial blood, forehead sensors may yield measures more concordant with arterial blood. Both sensors detected exercise-induced desaturation. 2013 Journal Article http://hdl.handle.net/20.500.11937/9079 10.1111/resp.12129 Wiley-Blackwell Publishing Asia restricted |
| spellingShingle | oximetry exercise hypoxaemia blood chronic obstructive pulmonary disease Wilson, Stephanie Cecins, Nola Jenkins, Sue Melang, Michelle Singh, B. Hill, Kylie Comparing finger and forehead sensors to measure oxygen saturation in people with chronic obstructive pulmonary disease |
| title | Comparing finger and forehead sensors to measure oxygen saturation in people with chronic obstructive pulmonary disease |
| title_full | Comparing finger and forehead sensors to measure oxygen saturation in people with chronic obstructive pulmonary disease |
| title_fullStr | Comparing finger and forehead sensors to measure oxygen saturation in people with chronic obstructive pulmonary disease |
| title_full_unstemmed | Comparing finger and forehead sensors to measure oxygen saturation in people with chronic obstructive pulmonary disease |
| title_short | Comparing finger and forehead sensors to measure oxygen saturation in people with chronic obstructive pulmonary disease |
| title_sort | comparing finger and forehead sensors to measure oxygen saturation in people with chronic obstructive pulmonary disease |
| topic | oximetry exercise hypoxaemia blood chronic obstructive pulmonary disease |
| url | http://hdl.handle.net/20.500.11937/9079 |