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Identification of lung mechanical properties in patients with acute exacerbation of chronic obstructive pulmonary disease (AECOPD)or acute heart failure (AHF) through forced oscillation technique (FOT): Preliminary results

Alice Claudia Repossi, Fabiano Di Marco, Emanuela Rancati, Mirta Cavallini, Fulvia Ribolla, Sara Job, Stefano Centanni
European Respiratory Journal 2015 46: PA4622; DOI: 10.1183/13993003.congress-2015.PA4622
Alice Claudia Repossi
Dipartimento Scienze della Salute, Respiratory Unit, San Paolo Hospital, Università degli Studi di Milano, Milan, Italy
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Fabiano Di Marco
Dipartimento Scienze della Salute, Respiratory Unit, San Paolo Hospital, Università degli Studi di Milano, Milan, Italy
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Emanuela Rancati
Dipartimento Scienze della Salute, Respiratory Unit, San Paolo Hospital, Università degli Studi di Milano, Milan, Italy
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Mirta Cavallini
Dipartimento Scienze della Salute, Respiratory Unit, San Paolo Hospital, Università degli Studi di Milano, Milan, Italy
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Fulvia Ribolla
Dipartimento Scienze della Salute, Respiratory Unit, San Paolo Hospital, Università degli Studi di Milano, Milan, Italy
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Sara Job
Dipartimento Scienze della Salute, Respiratory Unit, San Paolo Hospital, Università degli Studi di Milano, Milan, Italy
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Stefano Centanni
Dipartimento Scienze della Salute, Respiratory Unit, San Paolo Hospital, Università degli Studi di Milano, Milan, Italy
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Abstract

In acute dyspnea differentiating between COPD exacerbations and acute heart failure represents an important clinical issue. Nowadays there are no accurate methods to discriminate the two diseases. Our hypothesis is that FOT allows to identify the different mechanical properties of both conditions.

During the first day of hospitalization each patient underwent two FOT measurements in multifrequency (5-11-19 MHz) for two minutes at tidal volume in a sitting position. Three groups were evaluated: 11 patients with AECOPD (age 69±8 years, mean±SD, BMI 24,5±2,7 kg/m², FEV1 35±17% predicted); 11 patients with AHF, NYHA IV class (age 75±1, BMI 29,4 ± 8,1 kg/m²) and 6 healthy non-smoker subjects (mean age 63±3, BMI 27,7±5,0 kg/m², normal spirometry).

All 28 subjects executed FOT with adequate compliance. 5-Hz resistance and reactance, 11 and 19-Hz reactance values were significantly increased in AECOPD compared to the other two groups (P<0,05). 11 and 19-Hz resistance values did not show significant differences between the three groups. Expiratory flow limitation (ΔXrs >2,81 cmH2O*s*L-1) distinguished AECOPD from the other two groups (P<0,05).

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FOT may permit accurate discrimination of AECOPD from AHF in hospitalized subjects with acute dyspnea, and should therefore be confirmed on a larger scale.

  • Chronic disease
  • Physiology
  • Lung mechanics
  • Copyright ©ERS 2015
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Identification of lung mechanical properties in patients with acute exacerbation of chronic obstructive pulmonary disease (AECOPD)or acute heart failure (AHF) through forced oscillation technique (FOT): Preliminary results
Alice Claudia Repossi, Fabiano Di Marco, Emanuela Rancati, Mirta Cavallini, Fulvia Ribolla, Sara Job, Stefano Centanni
European Respiratory Journal Sep 2015, 46 (suppl 59) PA4622; DOI: 10.1183/13993003.congress-2015.PA4622

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Identification of lung mechanical properties in patients with acute exacerbation of chronic obstructive pulmonary disease (AECOPD)or acute heart failure (AHF) through forced oscillation technique (FOT): Preliminary results
Alice Claudia Repossi, Fabiano Di Marco, Emanuela Rancati, Mirta Cavallini, Fulvia Ribolla, Sara Job, Stefano Centanni
European Respiratory Journal Sep 2015, 46 (suppl 59) PA4622; DOI: 10.1183/13993003.congress-2015.PA4622
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