The threshold for detecting a rise in airflow resistance during tidal breathing is lower in older patients with copd than in healthy people of similar age
Authors: Allen, S., Tanner, A. and Khattab, A.
Journal: Advances in Respiratory Medicine
Volume: 88
Issue: 4
Pages: 313-319
eISSN: 2543-6031
ISSN: 2451-4934
DOI: 10.5603/ARM.a2020.0126
Abstract:Introduction: To investigate whether or not the threshold for subjectively detecting an increase in the resistance to airflow (LDT) during tidal breathing at rest rises in older age in patients with COPD, as it does in healthy people and asthmatics in remission. Material and methods: We conducted an open cross-sectional study of 31 older patients (age 55–89) with COPD and 60 healthy volunteers (age 55–86). Inspiratory and expiratory resistive load detection thresholds (ILDT and ELDT respectively) and spirometry were measured. Results: The mean (SD) ILDT was 5.93 (7.02) kPa.s/L in COPD patients, compared to 11.11 (8.47) in healthy people (P < 0.001) in the same age range. There was no significant correlation between ILDT and age in the COPD group (r =-0.182, P = 0.326), though significant correlation with age was found in healthy people (r = 0.591, P < 0.001). ILDT and ELDT in COPD patients correlated significantly with the FEV1/FVC ratio (r = 0.367, P = 0.048 and r = 0.481, P = 0.007 respectively) but not with other spirometry indices, height, weight, BMI, oxygen saturation or smoking pack-years. Conclusion: LDT during tidal breathing appears to be sensitized, and thereby lower, in older COPD patients, possibly due to altered central regulation of the threshold or as a consequence of the effect lung compliance, recoil and volume changes have on afferent input from mechano-receptors in COPD. Older COPD patients with good cognition are therefore likely to be as aware of changing airways resistance as younger patients and take appropriate therapeutic action.
https://eprints.bournemouth.ac.uk/34528/
Source: Scopus
The threshold for detecting a rise in airflow resistance during tidal breathing is lower in older patients with COPD than in healthy people of similar age.
Authors: Allen, S.C., Tanner, A. and Khattab, A.
Journal: Adv Respir Med
Volume: 88
Issue: 4
Pages: 313-319
eISSN: 2543-6031
DOI: 10.5603/ARM.a2020.0126
Abstract:INTRODUCTION: To investigate whether or not the threshold for subjectively detecting an increase in the resistance to airflow (LDT) during tidal breathing at rest rises in older age in patients with COPD, as it does in healthy people and asthmatics in remission. MATERIAL AND METHODS: We conducted an open cross-sectional study of 31 older patients (age 55-89) with COPD and 60 healthy volunteers (age 55-86). Inspiratory and expiratory resistive load detection thresholds (ILDT and ELDT respectively) and spirometry were measured. RESULTS: The mean (SD) ILDT was 5.93 (7.02) kPa.s/L in COPD patients, compared to 11.11 (8.47) in healthy people (P < 0.001) in the same age range. There was no significant correlation between ILDT and age in the COPD group (r = -0.182, P = 0.326), though significant correlation with age was found in healthy people (r = 0.591, P < 0.001). ILDT and ELDT in COPD patients correlated significantly with the FEV1/FVC ratio (r = 0.367, P = 0.048 and r = 0.481, P = 0.007 respectively) but not with other spirometry indices, height, weight, BMI, oxygen saturation or smoking pack-years. CONCLUSION: LDT during tidal breathing appears to be sensitized, and thereby lower, in older COPD patients, possibly due to altered central regulation of the threshold or as a consequence of the effect lung compliance, recoil and volume changes have on afferent input from mechano-receptors in COPD. Older COPD patients with good cognition are therefore likely to be as aware of changing airways resistance as younger patients and take appropriate therapeutic action.
https://eprints.bournemouth.ac.uk/34528/
Source: PubMed
The threshold for detecting a rise in airflow resistance during tidal breathing is lower in older patients with COPD than in healthy people of similar age
Authors: Allen, S., Tanner, A. and Khattab, A.
Journal: ADVANCES IN RESPIRATORY MEDICINE
Volume: 88
Issue: 4
Pages: 313-319
eISSN: 2543-6031
ISSN: 2451-4934
DOI: 10.5603/ARM.a2020.0126
https://eprints.bournemouth.ac.uk/34528/
Source: Web of Science (Lite)
The threshold for detecting a rise in airflow resistance during tidal breathing is lower in older patients with COPD than in healthy people of similar age.
Authors: Allen, S., Tanner, A. and Khattab, A.
Journal: Advances in Respiratory Medicine
Volume: 88
Issue: 3
Pages: 1-7
Publisher: Via Medica
ISSN: 2451-4934
DOI: 10.5603/ARM.a2020.0126
Abstract:Abstract Introduction: To investigate whether or not the threshold for subjectively detecting an increase in the resistance to airflow (LDT) during tidal breathing at rest rises in older age in patients with COPD, as it does in healthy people and asthmatics in remission. Material and methods: We conducted an open cross-sectional study of 31 older patients (age 55–89) with COPD and 60 healthy volunteers (age 55–86). Inspiratory and expiratory resistive load detection thresholds (ILDT and ELDT respectively) and spirometry were measured. Results: The mean (SD) ILDT was 5.93 (7.02) kPa.s/L in COPD patients, compared to 11.11 (8.47) in healthy people (P < 0.001) in the same age range. There was no significant correlation between ILDT and age in the COPD group (r = -0.182, P = 0.326), though significant correlation with age was found in healthy people (r = 0.591, P < 0.001). ILDT and ELDT in COPD patients correlated significantly with the FEV1/FVC ratio (r = 0.367, P = 0.048 and r = 0.481, P = 0.007 respectively) but not with other spirometry indices, height, weight, BMI, oxygen saturation or smoking pack-years. Conclusion: LDT during tidal breathing appears to be sensitized, and thereby lower, in older COPD patients, possibly due to altered central regulation of the threshold or as a consequence of the effect lung compliance, recoil and volume changes have on afferent input from mechano-receptors in COPD. Older COPD patients with good cognition are therefore likely to be as aware of changing airways resistance as younger patients and take appropriate therapeutic action.
https://eprints.bournemouth.ac.uk/34528/
Source: Manual
The threshold for detecting a rise in airflow resistance during tidal breathing is lower in older patients with COPD than in healthy people of similar age.
Authors: Allen, S.C., Tanner, A. and Khattab, A.
Journal: Advances in respiratory medicine
Volume: 88
Issue: 4
Pages: 313-319
eISSN: 2543-6031
ISSN: 2451-4934
DOI: 10.5603/arm.a2020.0126
Abstract:Introduction
To investigate whether or not the threshold for subjectively detecting an increase in the resistance to airflow (LDT) during tidal breathing at rest rises in older age in patients with COPD, as it does in healthy people and asthmatics in remission.Material and methods
We conducted an open cross-sectional study of 31 older patients (age 55-89) with COPD and 60 healthy volunteers (age 55-86). Inspiratory and expiratory resistive load detection thresholds (ILDT and ELDT respectively) and spirometry were measured.Results
The mean (SD) ILDT was 5.93 (7.02) kPa.s/L in COPD patients, compared to 11.11 (8.47) in healthy people (P < 0.001) in the same age range. There was no significant correlation between ILDT and age in the COPD group (r = -0.182, P = 0.326), though significant correlation with age was found in healthy people (r = 0.591, P < 0.001). ILDT and ELDT in COPD patients correlated significantly with the FEV1/FVC ratio (r = 0.367, P = 0.048 and r = 0.481, P = 0.007 respectively) but not with other spirometry indices, height, weight, BMI, oxygen saturation or smoking pack-years.Conclusion
LDT during tidal breathing appears to be sensitized, and thereby lower, in older COPD patients, possibly due to altered central regulation of the threshold or as a consequence of the effect lung compliance, recoil and volume changes have on afferent input from mechano-receptors in COPD. Older COPD patients with good cognition are therefore likely to be as aware of changing airways resistance as younger patients and take appropriate therapeutic action.https://eprints.bournemouth.ac.uk/34528/
Source: Europe PubMed Central
The threshold for detecting a rise in airflow resistance during tidal breathing is lower in older patients with COPD than in healthy people of similar age.
Authors: Allen, S., Tanner, A. and Khattab, A.D.
Journal: Advances in Respiratory Medicine
Volume: 88
Issue: 4
Pages: 313-319
ISSN: 2451-4934
Abstract:Abstract Introduction: To investigate whether or not the threshold for subjectively detecting an increase in the resistance to airflow (LDT) during tidal breathing at rest rises in older age in patients with COPD, as it does in healthy people and asthmatics in remission. Material and methods: We conducted an open cross-sectional study of 31 older patients (age 55–89) with COPD and 60 healthy volunteers (age 55–86). Inspiratory and expiratory resistive load detection thresholds (ILDT and ELDT respectively) and spirometry were measured. Results: The mean (SD) ILDT was 5.93 (7.02) kPa.s/L in COPD patients, compared to 11.11 (8.47) in healthy people (P < 0.001) in the same age range. There was no significant correlation between ILDT and age in the COPD group (r = -0.182, P = 0.326), though significant correlation with age was found in healthy people (r = 0.591, P < 0.001). ILDT and ELDT in COPD patients correlated significantly with the FEV1/FVC ratio (r = 0.367, P = 0.048 and r = 0.481, P = 0.007 respectively) but not with other spirometry indices, height, weight, BMI, oxygen saturation or smoking pack-years. Conclusion: LDT during tidal breathing appears to be sensitized, and thereby lower, in older COPD patients, possibly due to altered central regulation of the threshold or as a consequence of the effect lung compliance, recoil and volume changes have on afferent input from mechano-receptors in COPD. Older COPD patients with good cognition are therefore likely to be as aware of changing airways resistance as younger patients and take appropriate therapeutic action.
https://eprints.bournemouth.ac.uk/34528/
Source: BURO EPrints