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Published on: March 1, 2015
Effect of continuous swallowing on respiration
1Respiratory Research Group, Faculty of Medicine, University of Calgary, Alberta, Canada.
Respiration Physiology
|February 1, 1994
Summary
Continuous swallowing, induced by water infusion, increased swallow frequency without altering ventilation in adults. Breathing interruptions during swallowing were bolus volume-dependent but did not cause aspiration or coughing.
Area of Science:
- Physiology
- Respiratory System
- Swallowing Mechanisms
Background:
- Breathing and swallowing are complex physiological processes that require precise coordination.
- Interactions between the respiratory and deglutition systems are critical for safe and efficient function.
Purpose of the Study:
- To investigate the impact of continuous, repetitive swallowing on breathing patterns and overall ventilation in healthy adults.
- To determine if induced swallowing affects respiratory parameters like tidal volume and airflow.
Main Methods:
- Seven adult subjects underwent continuous oral water infusion at varying rates (40-100 ml/min) to induce repetitive swallowing.
- Breathing patterns, including tidal volume, inspiratory/expiratory times, and ventilation, were monitored.
- Swallowing frequency and duration of breathing interruption were recorded.
Main Results:
- Repetitive swallowing significantly increased swallow frequency compared to baseline.
- Breathing was interrupted during most swallows, with interruption duration correlating with bolus volume.
- Despite altered breathing patterns during swallows, mean ventilation remained unchanged.
- No instances of aspiration or coughing were observed.
Conclusions:
- The human cardiorespiratory system effectively integrates repetitive swallowing without compromising ventilation.
- Sophisticated neural mechanisms ensure precise coordination between breathing and swallowing, preventing aspiration during fluid intake.
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