RESP 1350 - MECHANICAL
VENTILATION 2 EXAM QUESTIONS
AND ANSWERS 2026 VERIFIED.
How are Ventilators powered? - ANS With electricity or compressed gas
What are the 2 forms of electrical energy a ventilator can use? - ANS - AC/DC power (plug)
- Rechargeable Batteries
How much PSI is required for a pneumatic powered ventilator? - ANS 50 psi
What are some ideal uses of pneumatic powered ventilators? - ANS - Electric is
unavailable
- Patient Transport
- As a backup to electrical power
- When electric is undesirable (i.e. MRI, etc.)
When transporting, what must you always take with you? - ANS - Manually powered bag-
valve mask resuscitator
- Extra Batteries
- Extra oxygen tanks
1
,What kind of control circuits can a ventilator have? - ANS - Mechanical
- Pneumatic
- Electrical
- Fluidic Logic (no electrical component)
Mechanical Control Circuits use what kind of devices? - ANS - Levers
- Pulleys
- Cams
Pneumatic Control Circuits use what kind of devices? - ANS - Gas-powered pressure
regulators
- Needle Valves
- Jet Entrainment Devices
- Balloon Valves
What is unique about a Fluidic Logic-Controlled Ventilator's mechanism? - ANS They have
no moving parts and consumes less gas, which is ideal for transporting patients
What is an advantage of having a Fluidic Logic-Controlled Ventilator? - ANS It can be used
around MRI equipment
In regards to the 1st Maxim, how do you define a breath? - ANS A breath is one cycle of
positive flow (Inspiration) and negative flow (Expiration) defined in terms of the Flow-Time
Curve.
What is Total Cycle Time (TCT)? - ANS The number of breaths you can take in 60 sec
How do you calculate Total Cycle Time (TCT)? - ANS 1. 60 sec/RR = TCT
OR
2. Inspiratory Time (TI) + Expiratory Time (TE) = TCT
2
, What is the Equation of Motion? - ANS PVENT + Pmuscles = elastance x volume +
resistance x flow
In Volume Control, what variable is preset prior to inspiration? - ANS Volume and Flow
In Pressure Control, what variable is preset to some constant value or is proportional to
inspiratory effort? - ANS Inspiratory Pressure
What are the 4 signals that can be used to trigger or cycle inspiration? - ANS - Pressure
- Flow
- Volume
- Time
Which of the signals, when set, allows the ventilator to trigger the breath? - ANS Time
Which of the signals, when set, are patient dependent? - ANS - Pressure
- Volume
- Flow
What is Patient Triggering? - ANS The patient triggers the inspiration based on the signals
they present
What is Machine Triggering? - ANS The ventilator triggers the inspiration based on the
signals it present
What is Patient Cycling? - ANS The patient cycles the inspiration based on the patient-
determined components
What can be a form of Patient Cycling? - ANS Flow Cycling
3
VENTILATION 2 EXAM QUESTIONS
AND ANSWERS 2026 VERIFIED.
How are Ventilators powered? - ANS With electricity or compressed gas
What are the 2 forms of electrical energy a ventilator can use? - ANS - AC/DC power (plug)
- Rechargeable Batteries
How much PSI is required for a pneumatic powered ventilator? - ANS 50 psi
What are some ideal uses of pneumatic powered ventilators? - ANS - Electric is
unavailable
- Patient Transport
- As a backup to electrical power
- When electric is undesirable (i.e. MRI, etc.)
When transporting, what must you always take with you? - ANS - Manually powered bag-
valve mask resuscitator
- Extra Batteries
- Extra oxygen tanks
1
,What kind of control circuits can a ventilator have? - ANS - Mechanical
- Pneumatic
- Electrical
- Fluidic Logic (no electrical component)
Mechanical Control Circuits use what kind of devices? - ANS - Levers
- Pulleys
- Cams
Pneumatic Control Circuits use what kind of devices? - ANS - Gas-powered pressure
regulators
- Needle Valves
- Jet Entrainment Devices
- Balloon Valves
What is unique about a Fluidic Logic-Controlled Ventilator's mechanism? - ANS They have
no moving parts and consumes less gas, which is ideal for transporting patients
What is an advantage of having a Fluidic Logic-Controlled Ventilator? - ANS It can be used
around MRI equipment
In regards to the 1st Maxim, how do you define a breath? - ANS A breath is one cycle of
positive flow (Inspiration) and negative flow (Expiration) defined in terms of the Flow-Time
Curve.
What is Total Cycle Time (TCT)? - ANS The number of breaths you can take in 60 sec
How do you calculate Total Cycle Time (TCT)? - ANS 1. 60 sec/RR = TCT
OR
2. Inspiratory Time (TI) + Expiratory Time (TE) = TCT
2
, What is the Equation of Motion? - ANS PVENT + Pmuscles = elastance x volume +
resistance x flow
In Volume Control, what variable is preset prior to inspiration? - ANS Volume and Flow
In Pressure Control, what variable is preset to some constant value or is proportional to
inspiratory effort? - ANS Inspiratory Pressure
What are the 4 signals that can be used to trigger or cycle inspiration? - ANS - Pressure
- Flow
- Volume
- Time
Which of the signals, when set, allows the ventilator to trigger the breath? - ANS Time
Which of the signals, when set, are patient dependent? - ANS - Pressure
- Volume
- Flow
What is Patient Triggering? - ANS The patient triggers the inspiration based on the signals
they present
What is Machine Triggering? - ANS The ventilator triggers the inspiration based on the
signals it present
What is Patient Cycling? - ANS The patient cycles the inspiration based on the patient-
determined components
What can be a form of Patient Cycling? - ANS Flow Cycling
3
