Ventilation - Hamilton eLearning tests Flashcards
What is compliance?
a) A factor of time to fill or empty lungs under a given condition.
b) Pressure-volume relationship of a balloon like structure.
c) A force opposing gas movement.
b) Pressure-volume relationship of a balloon like structure.
Why do we need respiration?
a) To continously remove CO2 from and bring oxygen to living cells.
b) Only to bring oxygen continously to living cells.
c) Only to remove CO2 continously from living cells.
a) To continously remove CO2 from and bring oxygen to living cells.
Which force drives gas to move during artificial (mechanical) inspiration?
a) Inspiratory muscle contraction.
b) Elastic recoil force of the lungs and chest wall.
c) Pao increase by a ventilator.
c) Pao increase by a ventilator.
Which force drives gas to move during natural expiration?
a) Pao increase by a ventilator.
b) Elastic recoil force of the lungs and chest.
c) Inspiratory muscle contraction.
b) Elastic recoil force of the lungs and chest.
What is pressure gradient?
a) A force applied over a unit are.
b) Movement of gas volume over time.
c) The pressure difference between two areas connected with a tube.
c) The pressure difference between two areas connected with a tube.
Can I ventilate a patient with a ventilator alone?
No
Can a ventilator system function as designed if the high pressure gas supply gas (both air and oxygen) is interrupted?
No
Can a ventilator system function as designed if the primary gas passageway is seriously occluded?
No
With a ventilator system, how are the lungs deflated?
a) Open the inspiratory valve and close the expiratory valve.
b) Open the both valves.
c) Open the expiratory valve and close the inspiratory valve.
c) Open the expiratory valve and close the inspiratory valve.
Can a ventilator system function as designed if there is a huge gas leak or disconnection somewhere in the system?
No
Why do we need to know about essential variables?
a) Variables are directly related to ventilator control paramenters.
b) Variables are basis of mechanical breaths.
c) Variables are not really important.
b) Variables are basis of mechanical breaths.
What is a mechanical breath?
a) A natural breath.
b) A breath that is realized through a ventilator system.
c) An intensive breath.
b) A breath that is realized through a ventilator system.
What is breath cycle time (BCT)?
a) Length of time when a ventilator allows gas exit from a ventilator system.
b) Length of time when a ventilator delivers gas into the breathing circuit.
c) Duration of a complete mechanical breath.
c) Duration of a complete mechanical breath.
In a passive patient, if the rate is set at 20 b/min, what is the BCT?
a) 3 seconds
b) 5 seconds
c) 4 seconds
a) 3 seconds
Of the three flow triggering settings, which one is the most sensitive?
a) 1.5 L/min
b) 0.5 L/min
c) 2.5 L/min
b) 0.5 L/min
What is or are the common cause(s) of auto-triggering?
a) Very sensitive setting of flow triggering or pressure triggering.
b) Water in the breathing circuit.
c) Gas leak.
If the set rate is 20 b/min and set I:E ratio is 1:1, what are Ti and Te in second?
a) Ti = 1.5 s and Te = 1.5 s
b) Ti = 2 s and Te = 1 s
c) Ti = 1 s and Te = 2 s
a) Ti = 1.5 s and Te = 1.5 s
Of a volume breath with Vt = 500 ml, if the set Ti is shortened, what will happen to peak inspiratory flow?
a) Peak inspiratory flow stays unchanged.
b) Peak inspiratory flow increases.
c) Peak inspiratory flow decreases.
If flow cycling setting in % is increased, what will happen to the resulting Ti?
a) Ti will decrease.
b) Ti will increase.
c) Ti will stay unchanged.
What does controlling variable mean?
a) It means the duration of a complete mechanical breath.
b) It means the size of a mechanical breath to be delivered.
c) It means the mechanism with which a ventilator controls gas delivery during inspiration.
c) It means the mechanism with which a ventilator controls gas delivery during inspiration.
Which of the statements is true in your opinion?
a) With pressure controlling, a ventilator regulates gas delivery based on the monitored airway pressure during inspiration.
b) With hybrid controlling, a ventilator controls both flow and pressure simultaneously.
c) With volume controlling, a ventilator controls gas flow during inspiration.
Which statement is true in your opinion?
a) Adaptive controlling is more similar to pressure controlling.
b) Adaptive controlling is more similar to volume controlling.
a) Adaptive controlling is more similar to pressure controlling.
Which of the parameters is a targeting variable?
a) Inspiratory pressure
b) I:E ratio
c) Tidal volume
Which statement is true in your opinion?
a) An adaptive breath is adaptively controlled.
b) A ventilator triggered mandatory breath (VTMB) is time cycled.
c) A ventilator triggered mandatory breath (VTMB) is time triggered.
What are the key properties of a spontaneous breath (SB)?
a) It is time triggered, time cycled, and pressure controlled.
b) It is flow or pressure triggered, flow cycled, and pressure controlled.
c) It is flow or pressure triggered, time cycled, and pressure controlled.
b) It is flow or pressure triggered, flow cycled, and pressure controlled.
