Source: Annual Congress 2004 - Lung function technology: beyond the basic test

Abstract

In our study, controlled O₂ therapy in COPD patients who developed respiratory failure due to acute attack was monitorized with pulse oximetry and probable carbon dioxide(CO₂) retention was observed with clinical signs. The reliability was controlled with arterial blood gas (ABG) measurement. Twenty three COPD cases whose oxygen saturation (PSaO₂ ) with pulse oximetry was < 90%, were enrolled into study. First clinician increased the fractional oxygen level (FiO₂ ) stepwise with 1 lt/min to make the 0₂ saturation 90% by controlling the saturation with pulse oximetry in every 30 minutes. Development of headache, asterixis, sleep tendency, confusion or coma during O₂ therapy were considered as CO₂ retention. The FiO₂ was not increased in patients CO₂ retention detected. Second clinician checked the ABG after every increase in FiO₂ and warned the first clinician if _PH< 7.26 or there was >10 mmHg increase in PCO₂ and prevented further increase in FiO₂. In none of 23 patients clinical CO₂ retention signs were detected by the first clinician. Second clinician prevented the Fi0₂ increase due to ≥10 mmHg increase of CO₂ in 5 (21,7%) cases. When the cases CO₂ retention developed were compared with those not, there was no significant difference in the last FiO₂ level, basal PCO₂ , basal _PH and increase in PaO₂ . In 7(30,4%) cases whose basal PCO₂ was >70 mmHg, mean PCO₂ increase was 7.05±8.65, in 16(69,6%) cases whose PCO₂ ≤70mmHg, it was 0.85±5.5 (p<0.05). We found that to detect CO₂ retention during 0₂ therapy, ABG is superior to observation with clinical signs.

Rating:

Share or cite this content

Citations should be made in the following way:
G. Güngör, A. Öngel, T. Törün, E. Aksoy, E. Maden, K. Tahaoglu (Istanbul, Turkey). The reliability of pulse oximetry and clinical observation in the follow up of oxygen(0₂) therapy. Eur Respir J 2004; 24: Suppl. 48, 2500

Member's Comments

No comment yet.

Related content which might interest you: Validation study of pulse oximeters Source: Annual Congress 2007 - Management of COPD: pushing forward the boundaries in primary care Year: 2007 Could nocturnal pulse oximetry be employed as rehabilitation outcome in COPD patients? Source: Eur Respir J 2004; 24: Suppl. 48, 294s Year: 2004 Patients’ perspectives on the use of pulse oximetry at home Source: International Congress 2019 – From tobacco-related comorbidities to tobacco cessation Year: 2019 Pulse oximeter validation study Source: Annual Congress 2011 - Quality control in lung function and exercise-related issues Year: 2011 The impact of continuous pulse oximetry monitoring during 6 minute walking test on detection of exercise induced hypoxemia Source: Annual Congress 2007 - Exercise: measurements, techniques and paradigms Year: 2007 Usefulness of pulse oximetry and its correlation with flurometry and spirometry in the evaluation of the paediatric asthma attack patient Source: Eur Respir J 2002; 20: Suppl. 38, 171s Year: 2002 Respiratory rate monitoring from pulse oximetry to assess treatment response in acute preschool wheeze Source: International Congress 2019 – Severe acute asthma and troublesome wheezing Year: 2019 Evaluating the accuracy of pulse oximetry: Finger probe versus earlobe probe in patients with confirmed or suspected COVID-19 within the community setting. Source: Virtual Congress 2021 – Diagnosis and management of COVID-19 Year: 2021 Continuous monitoring of pulse oximetry during the 6-minute walk test improves survival prediction in COPD Source: Virtual Congress 2021 – New insights into the pathophysiology and prognosis of COPD Year: 2021 Clinical utility of impulse oscillation system (IOS) for the assessment of clinical status and therapeutic efficacy in patients with COPD Source: Eur Respir J 2006; 28: Suppl. 50, 421s Year: 2006 Forensic oximetry: Is it possible to confirm that the same patient has worn an oximeter on 2 nights? Source: Annual Congress 2012 - Snoring and scoring: subjective and objective measures of sleep-disordered breathing Year: 2012 Recording respiratory rate by pulse oximetry – can it be done and can it predict outcome in patients with acute breathlessness? Source: Eur Respir J 2006; 28: Suppl. 50, 180s Year: 2006 Evaluating the accuracy of commercially available finger pulse oximeters in a hospital setting Source: International Congress 2018 – Clinical and functional monitoring in airway disease Year: 2018 Reliability and reproducibility of arterial stiffness by pulse wave velocity (PWV) in stable COPD patients Source: Annual Congress 2012 - Various issues in clinical physiology Year: 2012 A retrospective audit of the validity of the assessment guidelines for the prescription of long term oxygen therapy (LTOT) Source: Eur Respir J 2004; 24: Suppl. 48, 185s Year: 2004 Accuracy and reliability of pulse oximetry at different arterial carbon dioxide pressure levels Source: Eur Respir J 2008; 32: 1053-1059 Year: 2008 Inter-device variation in dual oximetry for polysomnography Source: Annual Congress 2012 - Snoring and scoring: subjective and objective measures of sleep-disordered breathing Year: 2012 Comparative analysis of the arterial oxygen saturation (SaO2) and pulse oximetry measurements (SpO2) in patients with pulmonary tuberculosis Source: Virtual Congress 2020 – Lung function diagnostics Year: 2020 Do patients with normal overnight oximetry benefit from a CPAP trial? Source: Eur Respir J 2007; 30: Suppl. 51, 9s Year: 2007 LATE-BREAKING ABSTRACT: TELEMOLD project: A telemonitoring system that combines oximetry and physical activity quantification to improve long term oxygen therapy Source: Annual Congress 2012 - The best posters on quality of life and coping styles in COPD Year: 2012