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Flashcards in Anaesthetics Deck (20)
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1

When is an oropharyngeal airway useful? What are its advantaged?

Short procedures
Most often as a bridge to a definitive airway
Easy to insert
No paralysis required

2

When is a laryngeal mask airway used? What are its advantages?

Day surgery
Easy to insert
Usually no paralysis required

3

When is a tracheostomy done? What are its advantages?

Slow weaning of airway
ITU
Reduces work of breathing and dead space

4

When is an endotracheal tube used? What are its advantages?

Long/short -term ventilation
Provides optimal control of airway

5

List the main IV anaesthetic agents used

Propofol
Sodium thiopentone
Ketamine
Etomidate

6

Which IV anaesthetic has anti-emetic property?

Propofol

7

Which IV anaesthetic can come with a "hangover" effect due to build up of metabolites?

Sodium thiopentone

8

Which IV anaesthetic has the greatest analgesic effect?

Ketamine

9

List the main inhalational anaesthetic agents used

Halothane
Isoflurane
Sevoflurane

10

Which inhalational anaesthetic carries a risk of hepatotoxicity?

Halothane

11

List colour of cannulae from largest to smallest flow rate (biggest to smallest)

Orange (14G)
Grey (16G)
Green (18G)
Pink (20G)
Blue (22G)

12

What is malignant hyperthermia?

Hyperpyrexia and muscle rigidity seen following administration of anaesthetics

13

What is the pathophysiology of malignant hyperthermia?

Excess release of Ca from SR of skeletal muscle

14

Which drug is given to counteract malignant hyperthermia?

Dantrolene

15

List the main muscle relaxants (NM blockers) used

Suxamethonium
Vecuronium
Atracurium
Pancuronium

16

Which muscle relaxant is depolarising and which are non-depolarising?

Depolarising: suxamethonium
Non-polarising: vecuronium, atracurium, pancuronium

17

Which muscle relaxant has the fastest onset and shortest duration of action?

Suxamethonium

18

When are nasopharyngeal airways appropriate/well-tolerated?

Low GCS
Seizures
NOT in base of skull fracture

19

List early (0-5 days) causes of post-op pyrexia

Blood transfusion
Cellulitis
Urinary tract infection
Physiological
Pulmonary atelectasis

20

List late (after 5 days) of post-op pyrexia

Venous thromboembolism
Pneumonia
Wound infection
Anastomotic leak