Chapter 13

Options and Accessories

Breath Delivery

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 cmH2O above PEEP. If the

 

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.

Flow-Trak Cycling

Condition (following the delivery of set Vt)

Response

The delivered flow meets the exhalation flow

The ventilator transitions to exhalation.

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 cmH20 above PEEP).

The ventilator transitions to exhalation.

HIP condition has been met.

The alarm sounds and ventilator transitions to exhalation. See “Alarms” on page 13-86.

I-Time too long condition has been met.

The alarm sounds and ventilator transitions to exhalation. See “Alarms” on page 13-86.

Inspiratory Hold

Respiratory

Mechanics

Table 13-13:Breath Transitions

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.

REF 1057983 A

Respironics V200 Ventilator Operator’s Manual

13-85

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Philips V200 manual Breath Delivery, Inspiratory Hold Respiratory Mechanics, 13-85, Response
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