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Exam II review
Airways, breathing system
31
Medical
Graduate
06/05/2009

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Term
What size LMA for a neonate < 5 kg?
Definition
1
Term
What size LMA for an infant 5-10 kg?
Definition
1.5
Term
What size LMA for infants/children 10-20 kg?
Definition
2
Term
What size LMA for children 20-30 kg?
Definition
2.5
Term
What size LMA for pts > 30 kg?
Definition
3
Term
What size LMA for pt 50-79 kg?
Definition
4
Term
What size LMA for a pt > 70 kg?
Definition
5
Term
What size LMA for a neonate 3 kg?
Definition
1
Term
What size LMA for an infant 8 kg?
Definition
1.5
Term
What size LMA for infants/children 12 kg?
Definition
2
Term
What size LMA for children 27 kg?
Definition
2.5
Term
What size LMA for pts 44 kg?
Definition
3
Term
What size LMA for pt 60 kg?
Definition
4
Term
What size LMA for pt 225 kg?
Definition
5--but may want to try to get in an ETT to really secure this airway; fast trach may be best.
Term
Hypoxia is caused by 3 main things. Name them.
Definition
1.Incorrect gas supplied to machine
2.Hypoxic mixture
3. Hypoventilation
Term
Name the two things that causes incorrect gas to the machine.
Definition
1. Pipeline crossover (bypass DISS0
2. Incorrect cylinder to machine (bypass PISS)
Term
Name the 4 things that can cause a hypoxic mixture.
Definition
1.Damage to flowmeters
2. Failure of interlocking rods
3. Damage to flow proportioning system
4. Leaks
Term
Name the 4 things that causes hypoventilation.
Definition
1.Obstruction in the inspiratory pathway
2. Inadequate gas pressure
3. Diffusional hypoxia
4. Excessive outflow (leaks, faulty scavenging valve)
Term
Name the 5 things that can cause hypercapnia.
Definition
1. Dead space
2. Rebreathing
3.CO2 tanks
4. MH
5. Exhausted absorber (most common)
Term
Name the 3 things that influences rebreathing.
Definition
1. FGF
2. Dead space
3. Design of the system
Term
Name the 3 things that influences the difference between volume delivered and volume inspired.
Definition
1. FGF
2. Leaks
3. Expansion and compression of system components
Term
Name the 4 things that influences the dialed vs. delivered concentration.
Definition
1. Amount of rebreathing
2. Air dilution
3. Leaks
4. Uptake by system components
Term
What 3 consequences can occur if you use a nasal cannula in the circle system?
Definition
1. High pressures
2. Unknown flow rate if APL open
3.Dries out soda lime
Term
Name the five main differences of the pediatric airway.
Definition
1. Narrow nares (use OG tube vs. NG)
2. High glottis (epiglottis is very narrow with acute angle)
3.Slanted vocal cords/cricoid cartilage
4. Short necks
5. Large tongues
Term
What is the narrowest part of the pediatric airway? The adult airway?
Definition
The cricoid cartilage. The rimma glottidis
Term
What 3 structures do you want the mask for a pediatric airway to cover?
Definition
1. Bridge of nose
2. Cheeks
3. Chin
Term
To mask a child, the ring finger may be around the _____ of the ____, and the small fingers are off the ______ tissues.
Definition
ramus, mandible, subglottic
Term
What is the "effort of the ring finger under the ramus?"
Definition
To pull upward rather than inward; not below the mandible or soft tissue
Term
2 reasons why you might want to use the "survival method" for masking a child
Definition
1. To break a laryngospasm
2. If the child has a protruding mandible
Term
Most common place for a mask to not seal on a child? On an adult?
Definition
Right side of the pt's face, opposite the "C". Same for adult
Term
How do you size a pediatric oral airway? An adult oral airway?
Definition
From the lips to the ramus (ascending portion of the mandible; "jaw line"). From the earlobe to the corner of the mouth.
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