ICU Flashcards
What is assist control ventilation?
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What is Synchronized Intermittent-Mandatory Ventilation (SIMV)?
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Disadvantages of SIMV?
Increased work of breathing
Reduces cardiac output
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A patient has respiratory muscle weakness and left ventricular dysfunction, what is the best mode of ventilation to use on them?
ACV
Patients who breathe rapidly on ACV should switch to _______
SIMV
What are disadvantages to pressure control ventilation?
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Pressure support ventilation?
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In Pressure Controlled Inverse Ratio Ventilation (PCIRV), the majority of the time is spent in higher/lower inspiratory pressure?
higher
How is Airway Pressure Release Ventilation (APRV) different than PCIRV?
APRV is a variation of CPAP that releases pressure temporarily on exhalation
Higher airway pressures
Requires increased sedation
Spontaneous ventilation is allowed at high and low pressures
Pressure Regulated Volume Control (PRVC)?
A volume target backup is added to a pressure assist-control mode
What is ´Proportional Assist Ventilation (PAV)?
Clinician sets the percentage of work of breathing and when it triggers
Positive feedback loop that uses intermittent end-inspiratory and end-expiratory pause maneuvers to control breathing
PEEP increases/decreases intrathoracic pressure and cardiac output?
Increases
When can PEEP be dangerous?
hypovolemia or cardiac dysfunction
Risk of barotrauma is dependent on Ppeak, while cardiac output response depends on Pmean? True or False
True
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The effects of PEEP can also be monitored by tracking the PaO2/FiO2ratio, would it increase or decrease?
Increase
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