Breath Delivery; Inspiratory Hold; Respiratory Mechanics - Respironics ESPRIT Operator's Manual

Breath Delivery

Inspiratory Hold

Respiratory
Mechanics
REF 580-1000-01 Y
The Flow-Trak option allows the ventilator to give additional flow to patients
who are not receiving the flows or volumes they desire by monitoring the
pressure during a mandatory or assist breath. If the patient draws more flow or
volume than what has been set, the inhalation pressure drops and Flow-Trak is
initiated. The target pressure during Flow-Trak is 2 cmH
patient's effort to draw flow or volume drops below the set flows or volumes the
ventilator returns to VCV.
The ventilator cycles to exhalation only if the set tidal volume plus compliance
and BTPS compensation has been delivered (unless HIP has been met). If the
patient effort ceases and set volume has not been met, the breath will
continue to deliver flow until volume has been met.
following the delivery of set Vt)
Condition (
The delivered flow meets the exhalation flow
threshold. The exhalation threshold is either the flow
trajectory that would have been followed had there not
been a Flow-Trak breath or 25% of measured peak
flow (whichever is larger).
Exhalation effort detected (pressure exceeds 4.5
cmH 0 above PEEP).
2
HIP condition has been met.
I-Time too long condition has been met.
Table 13-9:
If the actual I-Time is greater than the calculated I-Time, the next scheduled
mandatory inspiration is postponed to ensure exhalation time.
NOTE: In VCV, the calculated I-Time is based on the set tidal volume, peak flow,
and waveform shape.
Inspiratory hold is only allowed if the actual I-Time is less than or equal to the
calculated I-Time.
The Flow-Trak option affects the following Respiratory Mechanics features.
Esprit® Ventilator Operator's Manual © Respironics, Inc.
Flow-Trak Cycling
Response
The ventilator transitions to exhalation.
The ventilator transitions to exhalation.
The alarm sounds and ventilator
transitions to exhalation. See "Alarms"
on page 13-98.
The alarm sounds and ventilator
transitions to exhalation. See "Alarms"
on page 13-98.
Breath Transitions
Chapter 13
®
Flow-Trak Option
O above PEEP. If the
2
13-97