Endotracheal Tubes And Supraglottic Airways

Question 0

What type of airway has theoretical aspiration protection (GERD, full stomach, laparoscopy)?

Answer 0

ETT

Question 1

What type of airway requires less anesthetic and is non-irritating to the airway?

Answer 1

LMA

Question 2

Which airway is considered a more “secure” airway that is less likely to move or dislodge?

Answer 2

ETT

Question 3

Which type of airway is relatively quick and easy to insert and requires no special equipment?

Answer 3

LMA

Question 4

This type of airway if removed inflated, secretions come out with it?

Answer 4

LMA

Question 5

Which type of airway provides the ability to positive pressure ventilate at higher peak pressures?

Answer 5

ETT

Question 6

Which type of airway prevents against laryngospasm while the airway is in place?

Answer 6

ETT

Question 7

Which type of airway is used if postoperative ventilation is required?

Answer 7

ETT (obese, lung disease)

Question 8

Sizes of ETT are based on…

Answer 8

• Internal diameter (2.5mm-9.0mm)
• Adults 7.0-9.0
• Depth of ETT = ETT size x 3

Question 9

What is a Microlaryngoscopy Tube (MLT)?

Answer 9

Small diameter, longer ETT to facilitate the view of the airway, size 5-6 mm

Question 10

When inserting a nasal RAE tube, what are some additional tips?

Answer 10

1. Place ETT in warm saline container
2. Mix Afrin with 2% Lidocaine jelly
3. Dilate nasal passage with nasal trumpets
4. Use McGill forceps to guide tube

Question 11

What are Laryngectomy/Tracheal Stoma ETTS?

Answer 11

• “J tube”
• Placed through stoma
• Can be done awake or asleep

Question 12

The ETT cuff provides…

Answer 12

1. Protection against aspiration, but may be damaging if they exert too much pressure on the mucosa

Question 13

Resistance to flow is dependent on?

Answer 13

• The diameter of the tube

- and it’s length

Question 14

Before inserting an ETT, what do you check?

Answer 14

• cuff inflation

- make sure the circuit connector is tight

Question 15

PVC is ______?

Answer 15

Flammable

Question 16

What is an LMA?

Answer 16

• Essentially a big oral airway that fills the entire pharynx
• ASA Difficult airway algorithm stresses early insertion of LMA in the event of difficult mask

Question 17

Which type of LMA has no cuff?

Answer 17

I-gel

Question 18

What are some complications of a supraglottic airway?

Answer 18

• Sore throat, trauma from insertion
• Nerve injury including hypoglossal nerve
• Gastric distention and aspiration

Question 19

What are some complications from ETT?

Answer 19

• Sore throat
• Vocal cord damage
• Erosion of mucosa from cuff pressure
• Damage to teeth and mouth from DL
• Bronchial irritation, spasm
• Pneumothorax, barotrauma
• Aspiration
• Esophageal intubation

Question 20

What are some contraindications to supraglottic airways?

Answer 20

• Prone position
• Obesity
• Severe lung disease
• Pregnancy
• Laparoscopic surgery
• Full stomach
• Long case
• Need for postoperative ventilation