Mechanical Ventilation Exam 1 Updated
Study Guide Questions and Answers |
Focused Revision Pack | A+ Verified
• VE = Tidal volume x Respiratory rate -✓✓Minute ventilation equation:
• -Positive
-Negative
-High frequency (common in infants) -✓✓Types of Ventilation used:
• positive pressure ventilation -✓✓The ventilator delivers gas to patient through the
patient circuit which connects to endotracheal tube/tracheostomy tube or a mask.
*most common*
• What is negative pressure ventilation? -✓✓The patient is placed inside a chamber
with head extending outside the chamber. The chamber creates negative pressure
to draw air into the lungs.
• How does negative pressure ventilation function physiologically? -✓✓The vent
functions similarly to how we naturally breathe, drawing air into the lungs through
negative pressure.
• high frequency ventilation -✓✓Produce breathing patterns at frequencies much
higher than we would or could voluntarily.
• Home care ventilators -✓✓Used for patients at home. Powered by electricity and
oxygen comes from an oxygen tank. Back up batteries for at-home ventilators are
necessary.
• Assist Control (A/C) Mode -✓✓Is time OR patient triggered. The patient can
trigger extra breaths. Every breath is a mandatory ventilator breath, whether
triggered by the patient or by time. Will see a dip at the beginning of the waypoint
if breath is patient triggered
, • Peak Inspiratory Pressure (PIP) -✓✓The highest pressure administered with each
breath. Represents the amount of pressure needed to overcome both elastance and
airway resistance.
• What is Ptr? -✓✓Transrespiratory pressure
• What does Ptr represent? -✓✓The pressure difference between the airway
opening and the body surface
• What are the two components of Ptr? -✓✓Transthoracic pressure and
Transairway pressure
• What is Transthoracic pressure? -✓✓The pressure required to overcome elastic
recoil of the lungs and chest wall
• What is Transairway pressure? -✓✓The pressure required to overcome airway
resistance
• Tidal Volume (Vt) -✓✓amount of air moved per breath.
Normal is 6-8 mL/kg
• Used to get Pplat and static compliance -✓✓What is the inspiratory pause used
for?
• air trapping -✓✓What is the expiratory pause used for?
• inspiratory, expiratory -✓✓When Peak flow (Vmax) is increased, it will decrease
the ______________ time and it will increase the _________________ time.
(meaning I:E ratio) This is effective in patients with air trapping.
• PEEP and FiO2 -✓✓What do you adjust on the ventilator if there is an
oxygenation problem?
• RR and tidal volume -✓✓What do you adjust on the ventilator, while in
VOLUME control, if there is a ventilation problem?
• RR and inspiratory pressure -✓✓What do you adjust on the ventilator, while in
PRESSURE control, if there is a ventilation problem?
Study Guide Questions and Answers |
Focused Revision Pack | A+ Verified
• VE = Tidal volume x Respiratory rate -✓✓Minute ventilation equation:
• -Positive
-Negative
-High frequency (common in infants) -✓✓Types of Ventilation used:
• positive pressure ventilation -✓✓The ventilator delivers gas to patient through the
patient circuit which connects to endotracheal tube/tracheostomy tube or a mask.
*most common*
• What is negative pressure ventilation? -✓✓The patient is placed inside a chamber
with head extending outside the chamber. The chamber creates negative pressure
to draw air into the lungs.
• How does negative pressure ventilation function physiologically? -✓✓The vent
functions similarly to how we naturally breathe, drawing air into the lungs through
negative pressure.
• high frequency ventilation -✓✓Produce breathing patterns at frequencies much
higher than we would or could voluntarily.
• Home care ventilators -✓✓Used for patients at home. Powered by electricity and
oxygen comes from an oxygen tank. Back up batteries for at-home ventilators are
necessary.
• Assist Control (A/C) Mode -✓✓Is time OR patient triggered. The patient can
trigger extra breaths. Every breath is a mandatory ventilator breath, whether
triggered by the patient or by time. Will see a dip at the beginning of the waypoint
if breath is patient triggered
, • Peak Inspiratory Pressure (PIP) -✓✓The highest pressure administered with each
breath. Represents the amount of pressure needed to overcome both elastance and
airway resistance.
• What is Ptr? -✓✓Transrespiratory pressure
• What does Ptr represent? -✓✓The pressure difference between the airway
opening and the body surface
• What are the two components of Ptr? -✓✓Transthoracic pressure and
Transairway pressure
• What is Transthoracic pressure? -✓✓The pressure required to overcome elastic
recoil of the lungs and chest wall
• What is Transairway pressure? -✓✓The pressure required to overcome airway
resistance
• Tidal Volume (Vt) -✓✓amount of air moved per breath.
Normal is 6-8 mL/kg
• Used to get Pplat and static compliance -✓✓What is the inspiratory pause used
for?
• air trapping -✓✓What is the expiratory pause used for?
• inspiratory, expiratory -✓✓When Peak flow (Vmax) is increased, it will decrease
the ______________ time and it will increase the _________________ time.
(meaning I:E ratio) This is effective in patients with air trapping.
• PEEP and FiO2 -✓✓What do you adjust on the ventilator if there is an
oxygenation problem?
• RR and tidal volume -✓✓What do you adjust on the ventilator, while in
VOLUME control, if there is a ventilation problem?
• RR and inspiratory pressure -✓✓What do you adjust on the ventilator, while in
PRESSURE control, if there is a ventilation problem?
