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Components of a patient-triggered mechanical breath.

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Presentation on theme: "Components of a patient-triggered mechanical breath."— Presentation transcript:

1 Components of a patient-triggered mechanical breath.
Components of a patient-triggered mechanical breath. The triggering phase comprises the trigger variable. The post-triggering phase consists of the variable controlling pressure or flow delivery and the cycling-off variable. In pressure-control ventilation, the pressurization rate determines flow delivery, while in flow-cycled pressure-control ventilation the cycling-off variable determines mechanical inspiratory time. Catherine SH Sassoon Respir Care 2011;56:39-51 (c) 2012 by Daedalus Enterprises, Inc.

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The patient is being ventilated with 2 types of breaths.

The patient is being ventilated with 2 types of breaths.
The changes in peak flow and inspiratory time between a minimum rise time (first 2 breaths) and a maximum rise time (last 2 breaths), with the Servo-i.

The changes in peak flow and inspiratory time between a minimum rise time (first 2 breaths) and a maximum rise time (last 2 breaths), with the Servo-i.
Airway pressure and flow waveforms during constant flow volume control ventilation, illustrating the effect of an end-inspiratory breath-hold. Airway pressure.

Airway pressure and flow waveforms during constant flow volume control ventilation, illustrating the effect of an end-inspiratory breath-hold. Airway pressure.
Trigger pressure-time product (PTP) with zero pressure support, with no leak, medium leak, and large leak. Trigger pressure-time product (PTP) with zero.

Trigger pressure-time product (PTP) with zero pressure support, with no leak, medium leak, and large leak. Trigger pressure-time product (PTP) with zero.
Example ventilator screen during nasal neurally adjusted ventilatory assist in a premature neonate (23 weeks gestational age, 560 g) with respiratory distress.

Example ventilator screen during nasal neurally adjusted ventilatory assist in a premature neonate (23 weeks gestational age, 560 g) with respiratory distress.
Trigger delays and leaks.

Trigger delays and leaks.
Flow chart of pressure support test and spontaneous breathing trial (SBT). Flow chart of pressure support test and spontaneous breathing trial (SBT). The.

Flow chart of pressure support test and spontaneous breathing trial (SBT). Flow chart of pressure support test and spontaneous breathing trial (SBT). The.
Shape-signal method of triggering combines shape signal (A) and volume (B) methods of triggering. Shape-signal method of triggering combines shape signal.

Shape-signal method of triggering combines shape signal (A) and volume (B) methods of triggering. Shape-signal method of triggering combines shape signal.
Even though this patient is undergoing positive-pressure mechanical ventilation, the first 4 breaths have a relatively negative pressure (ie, pressure.

Even though this patient is undergoing positive-pressure mechanical ventilation, the first 4 breaths have a relatively negative pressure (ie, pressure.
Noninvasive ventilation-neurally adjusted ventilatory assist (NIV-NAVA) where each patient effort is captured but support is insufficient (maximum electrical.

Noninvasive ventilation-neurally adjusted ventilatory assist (NIV-NAVA) where each patient effort is captured but support is insufficient (maximum electrical.
A: Pressure (green) and volume (black)/time curve in airway pressure release ventilation (APRV). A: Pressure (green) and volume (black)/time curve in airway.

A: Pressure (green) and volume (black)/time curve in airway pressure release ventilation (APRV). A: Pressure (green) and volume (black)/time curve in airway.
An example of delayed cycling during pressure-support ventilation of a patient with COPD, on a Puritan Bennett 7200 ventilator, which has a flow-termination.

An example of delayed cycling during pressure-support ventilation of a patient with COPD, on a Puritan Bennett 7200 ventilator, which has a flow-termination.
The third breath has a negative deflection (ie, below PEEP) at the end of the mechanical breath (arrow A) associated with a flow increase (arrow B), indicating.

The third breath has a negative deflection (ie, below PEEP) at the end of the mechanical breath (arrow A) associated with a flow increase (arrow B), indicating.
Asynchrony index at baseline and following optimization of pressure support (PS) level (A), and following optimization of mechanical inspiratory time (mechanical.

Asynchrony index at baseline and following optimization of pressure support (PS) level (A), and following optimization of mechanical inspiratory time (mechanical.
Likert-scale agreement ratings regarding the use of extubation readiness parameters by pediatric critical care physicians. Likert-scale agreement ratings.

Likert-scale agreement ratings regarding the use of extubation readiness parameters by pediatric critical care physicians. Likert-scale agreement ratings.
Example airway pressure and rib-cage impedance in a premature infant supported with the biphasic mode of SiPAP (“sigh” positive airway pressure) from the.

Example airway pressure and rib-cage impedance in a premature infant supported with the biphasic mode of SiPAP (“sigh” positive airway pressure) from the.
Simulated screenshot of flow starvation in volume control continuous mandatory ventilation. Simulated screenshot of flow starvation in volume control continuous.

Simulated screenshot of flow starvation in volume control continuous mandatory ventilation. Simulated screenshot of flow starvation in volume control continuous.
Characteristics of a pressure-supported breath.

Characteristics of a pressure-supported breath.
The peak flows (60 L/min) and flow patterns are the same for all the breaths. The peak flows (60 L/min) and flow patterns are the same for all the breaths.

The peak flows (60 L/min) and flow patterns are the same for all the breaths. The peak flows (60 L/min) and flow patterns are the same for all the breaths.
During this tracing of 30 seconds, the ventilator displays that the patient rate is 16 breaths/min. During this tracing of 30 seconds, the ventilator displays.

During this tracing of 30 seconds, the ventilator displays that the patient rate is 16 breaths/min. During this tracing of 30 seconds, the ventilator displays.

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