system and device for exploration of the intrathoracic ventilatory mechanics

摘要

A system and process for exploration of the intrathoracic ventilatory mechanism producing a signal y = (V + lambda dV/dt) IN WHICH V = the volume displaced in the mouth of a patient, and lambda is an adjustable parameter. The signal y is recorded on an oscilloscope in dependence on DELTA p which is a signal indicating variations in oesophageal pressure. The parameter lambda is adjusted at the oscilloscope so that the loop representing y is closed in a straight line with the slope of the straight line giving compliance C and lambda /C giving the intrathoracic resistance.