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Flashcards in LMA Deck (16)
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1
Q

Dr. Brain developed what?

A

the LMA

2
Q

advantages of LMA

A
  1. Less stimulating during use (cf ETT)
  2. Does not require neuromuscular blockade for placement or maintenance (cf ETT)
  3. Less ↑ in intrathoracic and intraabdominal pressures during
  4. emergence (cf ETT)
  5. Less cardiovascular response (cf ETT)
  6. Less ↑ in IOP (cf ETT)
  7. Frees practitioner’s hands (cf face mask)
  8. Provides post-op airway (cf OAW, NAW)
3
Q

Disadvantages of LMA

A
  1. Learning curve
  2. Over-estimated ease of use
4
Q

LMA function = it
establishes
airway with
_____ seal

A

supraglottic

5
Q

In an LMA, there is _____ between
airway tube and
body of mask

A

≈ 30o

6
Q

what the size of the LMA connector?

A

15 mm connector

7
Q

how much air goes in a size 4 LMA

A

30 mL of air

(Size - 1 , then add a 0)

i.e. size 5 = 40 mL of air

8
Q

what pharynx does the cuff of the LMA sit when correctly inserted?

A

hypopharynx (a.k.a. larnygopharynx)

9
Q

where should tape an LMA

A

zygomatic region

10
Q

Which oral structure might you see edema in due to the LMA?

A
11
Q

which laryngeal joint can be dislocated due to LMA

A

Cricoarytenoid joint dislocation

12
Q

LMA insertion can stimulation which cranial nerves?

A

CN IX

CN X

13
Q

Indications for LMA

A
  1. Administration of general anesthesia
  2. Establish airway emergently for PPV
  3. Facilitate endotracheal intubation
  4. Adjunct to FFOB airway management
  5. Recovery from high-risk surgical procedures
14
Q

contraindications of LMA

A
  1. Risks of aspiration (GERD, not NPO, hiatal hernia, obesity, pregnancy, bowel obstruction, acute pancreatitis, ….)
  2. Respiratory disease with low compliance and/or high resistance.
  3. Patient position or surgery limiting airway access.
  4. upper airway pathology (infection, hematoma, cyst, ….)
15
Q

LMA Sizing

A

3 = 30-50kg

4 = 50-70 kg

5 = 70-100kg

16
Q

What is the purpose of a fastrach LMA?

A

It allows blind intubation without moving the head and neck