Study Guide-Quiz 1 Flashcards
Which 3 laryngeal cartilages are single (not paired)?
- Thyroid
- Cricoid
- Epiglottis
Which 3 laryngeal cartilages are paired?
- Arytenoid
- Corniculate
- Cuneiform
Which tracheal ring is the only complete ring?
Cricoid ring
How do you measure thyromental distance?
Measure from upper edge of thyroid cartilage to chin with the head fully extended
What does a short thyromental distance signify?
A short thyromental distance = an anterior larynx
Thyromental distance > 7 cm =
> 7 cm is usually an easy intubation
Thyromental distance < 6 cm =
<6 cm is a difficult airway
Mallampati Class I
Class I: soft palate, tonsillar fauces, tonsillar pillars, and uvula visualized
Mallampati Class II
Class II: soft palate, tonsillar fauces, and uvula visualized
Mallampati Class III
Class III: soft palate and base of uvula visualized
Mallampati Class IV
Class IV: soft palate not visualized
How can you calculate how much air to inject in a certain size LMA?
Amount of air you inject is 10 ccs less than 10x’s the size of the LMA
How much air would you inject in a size 3 LMA?
Size 3 = 20 ccs
How much air would you inject in a size 4 LMA?
Size 4 = 30 ccs
How much air would you inject in a size 5 LMA?
Size 5 = 40 ccs
What are the 3 types of valves on the anesthesia machine?
- Free-floating valve
- Ball and spring valve
- Diaphragm valve
What is the free-floating valve?
- Moves in the direction or “push” of gas flow
- Prevents gas from leaking out of system
- Found in DISS and dual hanger yoke systems
What does the hanger yoke valve system have for different cylinders?
The yoke assembly has pins for E cylinders to fit on
The oxygen pin index is…
2, 5
Nitrous oxide pin index is…
3, 5
The hanger yoke valve acts as a “___” valve
Safety valve
The hanger yoke valve opens and closes with ___
Pressure (i.e.: free floating valve)
The hanger yoke/free floating valve prevents a cylinder from…
Emptying into an empty cylinder or wall oxygen from entering a cylinder
Failure to open the cylinder valve will result in…
No gas flow to the anesthesia machine
What does a ball and spring valve do?
- The ball and spring valve prevents the mixing of oxygen and nitrous oxide
- Has oxygen fail safe pressure device—will automatically shut off nitrous oxide if oxygen pressure falls below a certain point
Oxygen pressure must maintain at least ___ psig to keep the ball and spring valve open
25 psig
Ball and spring valve senses ___ only, not flow delivery
Pressure
How many diaphragm valves are on the anesthesia machine?
Only 2 of these valves on the anesthesia machine
What are the 2 diaphragm valves on the anesthesia machine?
- First stage regulator
- Second stage regulator
What is the only role of the diaphragm valve?
To reduce pressure
The first stage regulator reduces cylinder pressure to ___ psig
40-50 psig (intermediate pressure)
The second stage regulator reduces pressure of 40-50 psig to ___ psig
16 psig (intermediate to low pressure)
Who founded the first anesthesia school?
Agatha Hodgins
Where was the first anesthesia school located?
Cleveland, Ohio
What year was the first anesthesia school founded?
1915
ASA Class II
Mild to moderate systemic disturbance
» heart disease that slightly limits physical activity, essential HTN, diabetes, chronic bronchitis, anemia, morbid obesity, age extremes
ASA Class III
Severe systemic disease that limits activity (poorly controlled chronic diseases)
» heart or chronic pulmonary disease that limits activity, poorly controlled essential HTN, diabetes mellitus with vascular complications, angina pectoris, history of previous MI
ASA Class IV
Severe systemic disease that is constantly life threatening
|»_space; CHF; persistent angina pectoris; advanced pulmonary, renal, or hepatic dysfunction
Mild to moderate systemic disturbance
» heart disease that slightly limits physical activity, essential HTN, diabetes, chronic bronchitis, anemia, morbid obesity, age extremes
ASA Class II
Severe systemic disease that limits activity (poorly controlled chronic diseases)
» heart or chronic pulmonary disease that limits activity, poorly controlled essential HTN, diabetes mellitus with vascular complications, angina pectoris, history of previous MI
ASA Class III
Severe systemic disease that is constantly life threatening
|»_space; CHF; persistent angina pectoris; advanced pulmonary, renal, or hepatic dysfunction
ASA Class IV
What color is the oxygen cylinder (in the US)?
Green
What is the PSI of oxygen?
1900-2200
What is the E-cylinder capacity of oxygen?
660 L
What is the color of the nitrous oxide cylinder (in the US)?
Blue
What is the PSI of nitrous oxide?
745
What is the E-cylinder capacity of nitrous oxide?
1600 L
What is the color of the air cylinder (in the US)?
Yellow
What is the PSI of air?
1800
What is the E-cylinder capacity of air?
600 L
