scholarly journals Inspiratory Muscle Training and Arterial Blood Oxygen Saturation in Patients With Chronic Obstructive Pulmonary Disease

2015 ◽  
Vol 4 (1) ◽  
Author(s):  
Maryam Bakhshandeh Bavarsad ◽  
Abdolali Shariati ◽  
Esmaiel Idani ◽  
Hamideh Zaheri ◽  
Sayed Mahmood Latifi
Keyword(s):  
Chronic Obstructive Pulmonary Disease ◽  
Oxygen Saturation ◽  
Pulmonary Disease ◽  
Chronic Obstructive ◽  
Blood Oxygen ◽  
Muscle Training ◽  
Blood Oxygen Saturation ◽  
Obstructive Pulmonary Disease ◽  
Arterial Blood ◽  
Arterial Blood Oxygen

scholarly journals Wearable Finger Pulse Oximetry for Continuous Oxygen Saturation Measurements During Daily Home Routines of Patients With Chronic Obstructive Pulmonary Disease (COPD) Over One Week: Observational Study (Preprint)

2018 ◽  
Author(s):  
Joren Buekers ◽  
Jan Theunis ◽  
Patrick De Boever ◽  
Anouk W Vaes ◽  
Maud Koopman ◽  
...  
Keyword(s):  
Chronic Obstructive Pulmonary Disease ◽  
Oxygen Saturation ◽  
Pulse Oximetry ◽  
Pulmonary Disease ◽  
Chronic Obstructive ◽  
Blood Oxygen ◽  
Obstructive Pulmonary Disease ◽  
Copd Patients ◽  
Finger Pulse ◽  
Pulse Oximeters

BACKGROUND Chronic obstructive pulmonary disease (COPD) patients can suffer from low blood oxygen concentrations. Peripheral blood oxygen saturation (SpO2), as assessed by pulse oximetry, is commonly measured during the day using a spot check, or continuously during one or two nights to estimate nocturnal desaturation. Sampling at this frequency may overlook natural fluctuations in SpO2. OBJECTIVE This study used wearable finger pulse oximeters to continuously measure SpO2 during daily home routines of COPD patients and assess natural SpO2 fluctuations. METHODS A total of 20 COPD patients wore a WristOx2 pulse oximeter for 1 week to collect continuous SpO2 measurements. A SenseWear Armband simultaneously collected actigraphy measurements to provide contextual information. SpO2 time series were preprocessed and data quality was assessed afterward. Mean SpO2, SpO2 SD, and cumulative time spent with SpO2 below 90% (CT90) were calculated for every (1) day, (2) day in rest, and (3) night to assess SpO2 fluctuations. RESULTS A high percentage of valid SpO2 data (daytime: 93.27%; nocturnal: 99.31%) could be obtained during a 7-day monitoring period, except during moderate-to-vigorous physical activity (MVPA) (67.86%). Mean nocturnal SpO2 (89.9%, SD 3.4) was lower than mean daytime SpO2 in rest (92.1%, SD 2.9; P<.001). On average, SpO2 in rest ranged over 10.8% (SD 4.4) within one day. Highly varying CT90 values between different nights led to 50% (10/20) of the included patients changing categories between desaturator and nondesaturator over the course of 1 week. CONCLUSIONS Continuous SpO2 measurements with wearable finger pulse oximeters identified significant SpO2 fluctuations between and within multiple days and nights of patients with COPD. Continuous SpO2 measurements during daily home routines of patients with COPD generally had high amounts of valid data, except for motion artifacts during MVPA. The identified fluctuations can have implications for telemonitoring applications that are based on daily SpO2 spot checks. CT90 values can vary greatly from night to night in patients with a nocturnal mean SpO2 around 90%, indicating that these patients cannot be consistently categorized as desaturators or nondesaturators. We recommend using wearable sensors for continuous SpO2 measurements over longer time periods to determine the clinical relevance of the identified SpO2 fluctuations.

scholarly journals The influence of oxygenotherapy on the hypercapnia in patients with chronic obstructive pulmonary disease

2008 ◽  
Vol 65 (7) ◽  
pp. 521-524
Author(s):  
Zorica Lazic ◽  
Ivan Cekerevac ◽  
Ljiljana Novkovic ◽  
Vojislav Cupurdija
Keyword(s):  
Carbon Dioxide ◽  
Chronic Obstructive Pulmonary Disease ◽  
Respiratory Failure ◽  
Pulmonary Disease ◽  
Oxygen Therapy ◽  
Chronic Obstructive ◽  
Average Increase ◽  
Obstructive Pulmonary Disease ◽  
Initial Values ◽  
Arterial Blood

Background/Aim. Oxygen therapy is a necessary therapeutic method in treatment of severe chronic respiratory failure (CRF), especially in phases of acute worsening. Risks which are to be taken into consideration during this therapy are: unpredictable increase of carbon dioxide in blood, carbonarcosis, respiratory acidosis and coma. The aim of this study was to show the influence of oxygen therapy on changes of arterial blood carbon dioxide partial pressure. Methods. The study included 93 patients in 104 admittances to the hospital due to acute exacerbation of CFR. The majority of the patients (89.4%) had chronic obstructive pulmonary disease (COPD), while other causes of respiratory failure were less common. The effect of oxygenation was controlled through measurement of PaO2 and PaCO2 in arterial blood samples. To analyze the influence of oxygen therapy on levels of carbon dioxide, greatest values of change of PaO2 and PaCO2 values from these measurements, including corresponding PaO2 values from the same blood analysis were taken. Results. The obtained results show that oxygen therapy led to the increase of PaO2 but also to the increase of PaCO2. The average increase of PaO2 for the whole group of patients was 2.42 kPa, and the average increase of PaCO2 was 1.69 kPa. There was no correlation between the initial values of PaO2 and PaCO2 and changes of PaCO2 during the oxygen therapy. Also, no correlation between the produced increase in PaO2 and change in PaCO2 during this therapy was found. Conclusion. Controlled oxygen therapy in patients with severe respiratory failure greatly reduces the risk of unwanted increase of PaCO2, but does not exclude it completely. The initial values of PaO2 and PaCO2 are not reliable parameters which could predict the response to oxygen therapy.

scholarly journals The Effect of Exercise on Oxygen Content in Anemic Patients With Chronic Obstructive Pulmonary Disease

2018 ◽  
Vol 12 ◽  
pp. 117954841879648
Author(s):  
Ahmet Sinan Copur ◽  
Hannan Dogar ◽  
Zhang Chao ◽  
Leandra Wallace ◽  
Kevin Henegar ◽  
...  
Keyword(s):  
Chronic Obstructive Pulmonary Disease ◽  
Pulmonary Disease ◽  
Oxygen Content ◽  
T Test ◽  
Walking Distance ◽  
Chronic Obstructive ◽  
Continuous Variables ◽  
Obstructive Pulmonary Disease ◽  
Arterial Blood ◽  
Before And After

Background: Anemia is reported in one-third of the patients with chronic obstructive pulmonary disease (COPD). Anemia, by decreasing oxygen content, can be a contributing factor for hypoxemia. We determined to find whether anemia causes more prominent hypoxia by decreasing the total oxygen content after exercise in anemic patients with COPD. Methods: Stable moderate-to-severe COPD patients with and without anemia were recruited. Arterial blood gas analyses were performed on room air before and after a 6-minute walking test (6MWT). Walking distance, oxygen saturation, and heart rate were recorded in each case before and after the 6MWT. Pulmonary function test measurements and other data were obtained from the chart. The mean and standard deviations were calculated for continuous variables. The independent t-test and Kruskal-Wallis test were performed for numerical covariate and univariate analyses. The paired t-test was used for the analyses of data before and after exercise. Results: A total of 24 male patients were included in the study; 12 of which were anemic. The oxygen content was decreased in the anemic group (15.22 ± 1.28 vs 15.07 ± 1.22) after exercise, but it was not significant. In the non-anemic group, no oxygen content decrease was observed after exercise (18.83 ± 1.41 vs 18.9 ± 1.37). Interestingly, the Spo2, but not Sao2, was significantly lower after exercise in anemic patients with COPD (93.46% ± 5.06% vs 88.20% ± 6.35% before and after exercise, respectively). Conclusions: Anemia does not cause more prominent hypoxemia after exercise in patients with COPD. However, the recorded Spo2 levels were significantly lower after exercise in the anemic patients with COPD.

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