Experiences with triggered pulmonary exposures in children

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.