Anesthesia Delivery System Part I Flashcards
Which breathing circuit is best for CONTROLLED VENTILATION?
A. Mapleson A
B. Mapleson C
C. Mapleson D
Mapleson D
Components of CIRCLE SYSTEM:
FLURRYS
Fresh gas entry
Low resistance tubing
Unidirectional Valves
Reservoir Bag
Relief Valve
Y-piece
Soda Lime
What law governs the concept of Second Gas effect?
A. Graham’s law
B. Henry’s law
C. Hagen Poiseuille’s Law
GRAHAM’S LAW
The rate of diffusion is inversely proportional to the square root of its molecular weight.
Undersized ETT causes tremdous decrease in flow of gases. This is due to what law?
A. Graham’s law
B. Henry’s law
C. Hagen Poiseuille’s Law
D. Dalton’s law
HAGEN POISEUILLE’S LAW
What is the average velocity of sound in soft tissue?
A. 1,540 m/s
B. 154 m/s
C. 15,400 m/s
1,540 m/s
Pressure from common gas outlet when oxygen flush valve delivers flow:
A. Intermediate pressure
B. low pressure
Intermediate Pressure
Maam Tata accidentally filled the sevo vaporizer with iso, what would happen?
A. Underdose
B. Overdose
C. No changes
OVERDOSE (Vapor Pressure of ISO is higher than SEVO)
One important property of vapor pressure is that as long as any liquid remains in the container, the vapor pressure is independent of the volume of that liquid.
This is what prevents putting the wrong gas cylinder on the wrong hanger yoke:
A. PISS
B. DISS
C. Fail-safe
PISS (Pin Index Safety System)
What is the RATE OF OXYGEN delivery from oxygen flush valve?
A. 35-75 L/min
B. 15 - 35 L/min
35-75L/min
A full air cylinder contains how many liters?
A. 625L
B. 350L
C. 1590L
625L
Which inhaled anesthetics use variable bypass vaporizers?
HISE
Halothane
Isoflurane
Sevoflurane
Enflurane
PSI in full air cylinder
A. 1800 mmHg
B. 690 mmHg
1800
How many liters of oxygen are in a full cylinder?
A. 625 L
B. 315 L
C. 500 L
625L
This Volatile gas is heated to 39 degrees C and pressurized to TWO atmospheres:
A. Desflurane
B. Halothane
C. Isoflurane
Desflurane
(Desflurane Tech 6 Vaporizer)
What is the PSI of full cylinder of carbon dioxide?
A. 838 PSi
B. 8,000 PSi
C. 383 PSi
838 PSi
This prevents transfer of gas from the cylinder with higher pressure to the cylinder with lower pressure:
A. Check valve
B. DISS
C. PISS
D. Oxygen analyzer
CHECK VALVE between cylinders that are double yoked
What are the components included in intermediate pressure?
INTERMEDIATE PRESSURE SYSTEM:
pressure gauges from pipeline
DISS
second stage regulator
flow control valve of manifold
oxygen pressure “fail safe” shut off valve
flush valve
What is the only valves which reduce pressure in the anesthesia work station?
A. flow control valve of manifold
B. “fail safe” shut off valve
C. flush valve
D. Diaphragm valve
Diaphragm Valve
Which property of Oxygen is detected by the fail-safe device?
PRESSURE
Factors that can artificially lower SpO2:
- dyes (ie methylene blue, indocyanine
- Blue nail polish
- Shiver/motion artifact
- Ambient light
- malpositioned sensor
- low perfusion
This is the point where gas prepared within the machine enters the breathing circuit?
A. flowmeter
B. common gas outlet
C. check valves
B. common gas outlet
Every patient ventilated with an ascending bellows anesthesia ventilator receives approximately ___ cm H2O of positive end-expiratory pressure (PEEP):
A. 10 cmH20
B. 2.5 - 3 cmH20
C. 5 cmH20
2.5 - 3 cmH20
TRUE or FALSE
N2O is a vapor and not a gas, therefore, it
does not obey Boyle’s law
TRUE
- Because N2O is a vapor and not a gas, it
does not obey Boyle’s law and the volume of nitrous oxide remaining in the tank cannot be calculated from the tank pressure gauge.
The ______ is designed to ensure that only an N2O tank may hang in an N2O hanger yoke.
A. DISS
B. PISS
PISS