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18 Anesthesia Machine
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Status
Last Update
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Published
12/13/2023
The volume lost to compliance is due to {{c1::expansion}} of the circuit in response to positive pressure.
Published
12/13/2023
Compliance = {{c1::Δ Volume / Δ Pressure}}
Published
12/13/2023
The Mapleson circuit is a {{c1::semi-open}} breathing system.
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12/13/2023
Which component of a Mapleson circuit/Circle system allow gases to leave the circuit?{{c1::Adjustable Pressure-Limiting (APL) Valve}}
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12/13/2023
Anesthesia workstations should have at least three disconnect alarms: Low {{c1::peak inspiratory pressure}}Low {{c1::exhaled tidal volume}}Low {{…
Published
12/13/2023
With fresh gas coupling, the total tidal volume delivered to a patient equals:{{c1::Vt (set on ventilator) + FGF during inspiration - Volume lost to c…
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12/13/2023
Which class of Mapleson circuit is most efficient for spontaneous ventilation?{{c1::Mapleson A}}
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12/13/2023
During controlled ventilation in a Mapleson A circuit, what fresh gas flow rate is required to prevent rebreathing?{{c1::20 L/min}}
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12/13/2023
Which class of Mapleson circuit is most efficient for controlled ventilation?{{c1::Mapleson D}}
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12/13/2023
In most Mapleson circuits, the fresh gas flow should be around {{c1::2.5}} times the patient's minute ventilation to prevent rebreathing.
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12/13/2023
{{c1::High}} concentrations of sevoflurane, prolonged exposure, and {{c2::low-flow}} anesthetic techniques increase the formation of compound A.
Published
12/13/2023
The length of a circle system affects circuit {{c1::compliance}}.
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12/13/2023
Hypercapnia during general anesthesia causes an/a {{c1::increase}} in cardiac output and arterial blood pressure
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12/13/2023
{{c1::General::Type}} anesthesia must be administered with an oxygen analyzer in the breathing circuit.
Published
12/13/2023
Three types of oxygen analyzers are available: {{c1::polarographic (Clark electrode)}}, {{c1::galvanic (fuel cell)}}, and {{c1::paramagnetic}}
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12/13/2023
Passive humidifiers (HME) trap exhaled {{c1::moisture}} and {{c1::heat}} released on inspiration.
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12/13/2023
An {{c1::increase::increase/decrease}} in airway resistance would {{c2::increase::increase/decrease}} peak inspiratory pressure
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12/13/2023
In a piston design, the ventilator substitutes an electrically driven piston for the bellows, and the ventilator does not require {{c1::pneumatic (oxy…
Published
12/13/2023
The major advantage of a piston ventilator is its ability to deliver accurate {{c1::tidal volumes}}.
Published
12/13/2023
An increase in both peak inspiratory pressure and plateau pressure implies an {{c1::increase::increase/decrease}} in tidal volume or a {{c1::decr…
Published
12/13/2023
An increase in peak inspiratory pressure without any change in plateau pressure signals an increase in {{c1::airway resistance}} or {{c2::inspiratory …
Published
12/13/2023
In mechanically ventilated patients, peak inspiratory pressure (PIP) is equal to the sum of {{c1::airway resistance pres…
Published
12/13/2023
On machines that couple fresh gas flow to tidal volume, increases in the FGF will {{c1::increase}} the tidal volume.
Published
12/13/2023
The compliance for standard adult breathing circuits is about {{c1::5}} mL/cm H2O
Published
12/13/2023
A normal O2 consumption (VO2) for a 70 kg adult is approximately {{c1::250}} mL/min, or {{c1::3.5}} mL/kg/min.
Published
12/13/2023
A {{c1::decrease::increase/decrease}} in lung compliance {{c2::increases::increase/decrease}} peak inspiratory pressure
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12/13/2023
In {{c1::pressure controlled volume guaranteed}} ventilation, the ventilator automatically adjusts pressure to maintain a preset tidal volume.
Published
12/13/2023
The {{c1::low pressure leak}} test assesses the integrity of the circuit from the flowmeter valves to the common gas outlet.
Published
12/13/2023
The low pressure system leak test fails if a bulb attached to the {{c1::common gas outlet}} inflates within {{c2::10}} seconds.
Published
12/13/2023
The {{c2::high pressure leak}} test is conducted by closing the APL valve and pressurizing the circuit to {{c1::30}} cm H2O.
Published
12/13/2023
If a high pressure leak test is done on a machine with a check valve, the test assesses the {{c1::breathing circuit}} and {{c2::low pressure system}}.…
Published
12/13/2023
If a high pressure leak test is done on a machine without a check valve, the test assesses for a leak up to the {{c1::check valve}}.
Published
12/13/2023
A {{c1::low}} fresh gas flow favors a laminar flow pattern in a Thorpe tube.
Published
12/13/2023
A {{c1::high}} fresh gas flow favors a turbulent flow pattern in a Thorpe tube.
Published
12/13/2023
On machines that couple fresh gas flow to tidal volume, decreases in the respiratory rate will {{c1::increase}} the tidal volume.
Published
12/13/2023
On machines that couple fresh gas flow to tidal volume, decreases in the I:E ratio (1:2 → 1:3) will {{c1::decrease}} the tidal volume.
Published
12/13/2023
mL of liquid anesthetic used per hour = {{c1::Vol% x FGF x 3}}
Published
12/13/2023
Calculating vaporizer output at elevationRequired dial setting = {{c1::normal dial setting (%) x 760 mmHg / ambient pressure (mmHg)}}
Published
12/13/2023
A reduced FiO2 during low flow anesthesia is usually due to increases in {{c1::oxygen consumption}}.
Published
12/13/2023
In anesthesia machines, {{c1::fresh gas decoupling}} isolates tidal volume delivered from the flowmeters and oxygen flush valve.
Published
12/13/2023
The positive pressure relief valve opens at {{c1::75}} cm H2O on a piston ventilator.
Published
12/13/2023
The negative pressure relief valve opens at {{c1::-8}} cm H2O on a piston ventilator.
Published
12/13/2023
What type of ventilators decouple fresh gas flow?{{c1::Piston ventilators}}
Published
12/13/2023
When a patient initiates spontaneous breaths on the ventilator, the piston {{c1::does not move}}.
Published
12/13/2023
{{c1::Volume}} controlled ventilation is associated with a fixed inspiratory flow rate.
Published
12/13/2023
{{c1::Pressure}} control ventilation is used to compensate for leaks.
Published
12/13/2023
A negative deflection on a ventilator monitor before a breath indicates a {{c1::spontaneous breath}}.
Published
12/13/2023
What ventilator mode is best for apneic patients?{{c1::Controlled mandatory ventilation}}
Published
12/13/2023
What ventilator mode provides a back-up rate if apnea is detected?{{c1::PSV-Pro}}
Published
12/13/2023
{{c1::Airway pressure release ventilation (APRV)}} involves high levels of pressure that are released at preset intervals.
Published
12/13/2023
The major drawbacks to using APRV and IRV ventilation modes in patients with ARDS is the need for {{c1::paralysis}} and the risk of {{c2::auto-peep}}.…
Published
12/13/2023
What ventilator malfunction is suggested by increased peak pressures not relieved by removing a patient from the ventilator?{{c1::Scavenger failure}}
Published
12/13/2023
What equation is used to calculate the flowmeter FiO2?{{c1::}}
Published
12/13/2023
How much PEEP does a piston ventilator add to the circuit?{{c1::None}}
Status
Last Update
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