Emergencies Flashcards

1
Q

Is any anaesthetic procedure without risk?

A

No

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2
Q

What can reduce the likelihood of anaesthetic emergencies occurring?

A

Adequate pre-anaesthetic assessment, appropriate use of anaesthetic drugs and careful monitoring

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3
Q

What can cause anaesthetic emergencies?

A

Human error - fatigue, failure, personnel, inattentiveness, lack of familiarity
Equipment failure - vaporiser, misassemble, pop-off, valve, ET problems, empty O2 tank, CO2 absorber exhausted

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4
Q

Give examples of anaesthetic agents

A

ACP
Halothane
Xylazine

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5
Q

Give examples of patient variation factors

A
Respiratory disease
Sighthounds
CVS disease
Neonatal patients 
Brachycephalic
Renal
Trauma
Obesity 
Caesarean sections
Geriatric 
Hepatic
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6
Q

What are the principles of emergency care

A
Alert VS
Stay calm 
Prioritise 
Be aware of emergency kit location 
keep emergency drug dosage sheets in crash box
DON'T PANIC
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7
Q

Give examples of crash kit drugs

A
Atropine
Adrenaline 
Lignocaine 
Diazepam 
Narcan 
Dopamine 
Doxapram 
Atipamezole
Sodium Bicarbonate
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8
Q

state common problems occurred during anaesthetic

A

patient too light
Patient too deep
respiratory arrest
Cardiac arrest

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9
Q

What could cause a patient to be too light?

A
Vaporiser problems 
ET tube problems 
Breath holding 
Shallow respiration 
Inadequate O2 flow
Anaesthetic machine
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10
Q

What could cause a patient to be too deep?

A

vaporiser set too high

Presence of pre-exisiting problems

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11
Q

What are the signs of a patient being too deep?

A
Slow shallow respiration 
Pale/cyanotic mms
CRT >2s
Bradycardia with weak pulse
Absence of reflexes
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12
Q

What do you do when the patient is too deep?

A

Turn down vaporiser
Initiate bagging - IPPV
Supportive Tx - IV fluids, heat, drugs

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13
Q

What are signs of recovery?

A

Increased HR
Improved mm colour
Stronger pulse
Improved CRT

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14
Q

Describe bagging a patient

A

IPPV
Requires intubation and O2 supply
Close/part close APL valve
Fill reservoir bag with O2
Gently squeeze bag until patient chest rises slightly
Repeat every 6secs until signs of recovery noted

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15
Q

why does respiratory arrest occur?

A
  • Anaesthetic overdose
  • Pre-existing respiratory disease
  • Lack of O2
  • Side effects of pre-meds
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16
Q

How do you assess for induction apnoea?

A

Look at eye position and palpebral reflex

17
Q

Describe the signs of respiratory arrest

A

dyspnoea, cyanosis and abnormal HR, CRT, pulse and pupil dilation

18
Q

Give signs of cardiac arrest

A

no heartbeat can be ausculated, palpated or seen on ECG/ultrasound
No palpable arterial pulse
MMs grey or cyanotic, CRT prolonged
Pupils widely dilated with no PLR
Repiration absent except for Cheyne-stokes respiration

19
Q

What can cause cardiac arrest?

A

Underlying disease, overdose

20
Q

What do you do when a patient is undergoing cardiac arrest?

A

Notify VS/get help
Once cardiac arrest is established you must begin compressions ASAP
Deliver compressions at 100-120bpm in 2min cycle
Intubate patient, if not already
IPPV at 10bpm
If on own do 30:2, compressions:breaths
Check for pulse after 2min cycle

21
Q

What treatment is given for cardiac arrest?

A

Compressions until spontaneous return of pulse and breathing occurs
Drugs
Keep patient warm

22
Q

How should cardiac compressions be given?

A
Animal lying on right side
Heal of hand at 5th intercostal space
Compress cheat by 1/3 - 1/2 width of chest
Small dogs/cats - use thumb and fingers
Rate: 100 compressions per min
23
Q

What equipment can be used in emergencies?

A

Defibrillator - used in cardiac arrest to stimulate heart and myocardial contractions
Self-inflating resuscitator bag - used in respiratory arrest to provide IPPV, may use mask or attach to ET tube
Urinary catheter - used to admin drugs via ET tubes
IV catheter - emergency access for drugs, fluids etc.

24
Q

What are the emergency golden rules?

A
Stay calm, alert VS ASAP
Turn off vaporiser
Make sure you know how to deliver IPPV
Be familiar with cardiac compressions
Have a well stocked crash box to hand