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Updated: Mar 27, 2026
08:34
Investigation into Deep Breathing through Measurement of Ventilatory Parameters and Observation of Breathing Patterns
Published on: September 16, 2019
12.2K
[Circulatory breathing abnormality: Clinical observation on exercise induced oscillatory breathing pattern]
Summary
Exercise induced oscillatory breathing (EIOB) is common in heart failure patients during exercise testing. This breathing pattern, linked to circulatory issues, appears in various measurements and warrants a new name: circulatory oscillatory breathing.
Area of Science:
- Cardiopulmonary physiology
- Clinical exercise testing
- Heart failure diagnostics
Background:
- Exercise induced oscillatory breathing (EIOB) during cardiopulmonary exercise testing (CPET) is linked to disease severity and prognosis.
- Clinical characterization of EIOB specifically due to circulatory dysfunction is infrequently reported.
Purpose of the Study:
- To analyze the characteristics of EIOB in patients with congestive heart failure (CHF) during CPET.
- To investigate the prevalence and presentation of EIOB stemming from circulatory dysfunction.
Main Methods:
- Retrospective analysis of symptom-limited maximum CPET data from 38 CHF patients.
- Calculation of EIOB parameters including duration, frequency, and amplitude.
- Assessment of EIOB across various ventilatory and gas exchange variables.
Main Results:
- EIOB was observed in 82% (31/38) of CHF patients during CPET.
- EIOB presented with significant VE amplitude (81% ± 30% of mean) and duration (77.0 ± 20.0 s).
- Oscillatory patterns were detected in multiple variables including VE, VO2, VCO2, RER, and PETO2.
Conclusions:
- EIOB is prevalent in severe CHF patients and can occur throughout all CPET stages.
- The presence of EIOB in multiple physiological variables suggests a systemic circulatory origin.
- Proposed renaming EIOB to 'circulatory (cardiac) oscillatory breathing abnormality' to reflect its etiology.
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