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Experiences with triggered pulmonary exposures in children
Insights
Transthoracic impedance monitoring precisely triggers pulmonary exposures at end-inspiration or end-expiration in infants. This method improves accuracy over conventional manual triggering in pediatric respiratory studies.
Area of Science:
- Pediatric Pulmonology
- Respiratory Physiology
- Medical Instrumentation
Background:
- Conventional manual triggering for pulmonary exposures in pediatric respiratory studies often results in random timing.
- Accurate timing of pulmonary exposures is crucial for reliable physiological measurements.
Purpose of the Study:
- To evaluate transthoracic impedance as a precise triggering device for pulmonary exposures in infants and small children.
- To compare the accuracy of impedance-triggered exposures with conventional manual triggering.
Main Methods:
- Pulmonary exposures were manually triggered in 51 small children, showing random distribution.
- Transthoracic impedance was monitored in 94 infants and small children.
- Pulmonary exposures were triggered using transthoracic impedance signals at end-inspiration or end-expiration.
Main Results:
- Manual triggering resulted in random distribution of pulmonary exposures.
- Transthoracic impedance monitoring allowed for precise triggering of pulmonary exposures.
- The impedance device enabled accurate matching of exposures to specific respiratory phases (end-inspiration/end-expiration).
Conclusions:
- Transthoracic impedance is a reliable and precise method for triggering pulmonary exposures in pediatric respiratory research.
- This technique offers significant advantages over conventional manual triggering for respiratory studies in infants and children.
Abstract:
With conventional manual triggering technique pulmonary exposures expected to time and end-inspiration were made on 51 small children. These exposures showed a random distribution. Transthoracic impedance reflects the variations in the pulmonary air-fluid ratio during respiration. In 94 infants and small children the transthoracic impedance was monitored while pulmonary exposures were triggered by a pulse given at the level of end-inspiration or end-expiration. It was found that transthoracic impedance as a triggering device permitted precise matching of the exposures to end-inspiration or end-expiration.