inhalation sedation

Question 1

name 4 contraindications for inhalation sedation

Answer 1

common cold - cant breathe through nose properly
severe COPD - not enough air in and out
1st trimester of pregnancy - precautionary
Fear of mask/ claustrophobia
tonsillar/ adenoidal enlargement

Question 2

minimum amount of o2 delivery during Inhalation sedation

Answer 2

30 %

Question 3

name 4 advantages of inhalation sedation

Answer 3

rapid onset (2-3 mins)
depth of sedation can be altered
flexible duration of effect
rapid recovery once N2O delivery stopped
no injection required
few side effects
drug not metabolised

Question 4

name 3 disadvantages to inhalation sedation

Answer 4

expensive equipment
not overly potent - can only give ‘gentle helping hand’
requires ability to breath through nose
difficult to determine actual dose
chronic exposure of staff - theory

Question 5

do patients undergoing inhalation sedation experience amnesia

Answer 5

no

Question 6

signs of adequate inhalation sedation

Answer 6

patient relaxed
reduced blink rate
vital signs unaffected
decreased spontaneous movement
gag reflex reduced

Question 7

symptoms of adequate inhalation sedation

Answer 7

dreaming
less aware of pain
small fits of controllable giggles
euphoria
paraesthesia - tingling of lips, toes, fingers, tongue

Question 8

signs and symptoms of oversedation (inhalation)

Answer 8

repeated mouth closing
uncontrollable laughter
incoherent speech
patient no longer enjoying effects
loss of consciousness
nausea/ vomiting

Question 9

name 4 things to be included on pre op instructions for inhalation sedation

Answer 9

light meal prior to appointment
take routine medicines as usual
children must be accompanied by a competent adult always
adults must be accompanied for first IS appointment
no alcohol on day of appointment
plan to remain on clinic for up to 30 mins post appointment

Question 10

what may patients complain of after IS sedation that is normal

Answer 10

feeling shivery

Question 11

name 3 safety features on inhalation sedation equipment

Answer 11

• scavenging system
• o2 flush button (flushes o2 at 35L/min)
• colour coded (NO2= blue)
• flow control meter (cant deliver less than 30% O2)
• oxygen monitor
• pressure dials for o2 and NO2

Question 12

what can be used during inhalation sedation procedure to decrease the likelihood of mouth breathing

Answer 12

rubber dam

Question 13

what feature of gas delivery hoses prevents rebreathing of expired gases

Answer 13

non return valve in expiratory limb

Question 14

inhalation sedation drug increments

Answer 14

1. allow patient to breath 100% o2 for about 1 min
2. reduce o2 by 10% increments until 80% then 5% per minute until adequate sedation achieved
3. when finished gradually increase o2 by 10% per minute until 100%