Basics Flashcards

(34 cards)

1
Q

What is pain?

A

Sensation associated with actual or potential injury

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2
Q

What neurones transmit sharp pain from pain receptor?

A

A-delta fibres

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3
Q

What fibres carry touch?

A

A-beta fibres

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4
Q

How does rubbing a painful area help with the pain?

A

A-beta fibres throw branches to inhibitory interneurones to dampen pain

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5
Q

What tracts transmit pain?

A

Lateral Spinothalamic tract

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6
Q

What is allodynia?

A

Pain to a stimulus that’s not actually there

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7
Q

What are some analgesics?

Give in form of pain ladder?

A

Moderate - severe pain (Morphine, fentanyl)
Mild - moderate pain (Codein, tramadol)
Mild (paracetamol, ibuprofen)

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8
Q

What is the max dosing of paracetamol?

A

1g up to 4 times a day

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9
Q

What are some side effects of paracetamol?

A

Rash
Idiopathic thrombocytopenia

If given rapidly IV can get hypotension and bradycardia

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10
Q

What is the principle of a paracetamol overdose?

How is it treated?

A

NAPQI is conjugated by GSH to prevent its toxicity . (NAPQI is toxic metabolite from paracetamol)

Acetylcysteine given to regenerate GSH

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11
Q

How long should a woman cease taking her COCP or HRT prior to surgery?

A

4 weeks

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12
Q

When should a patient cease taking their ACE inhibitor prior to surgery?

A

Morning of

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13
Q

Which anaesthetic agent has good anti-emetic properties?

A

Propofol

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14
Q

What anaesthetic is useful in cases of trauma since it doesn’t cause hypotension?

A

Ketamine

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15
Q

What are some drugs that impair wound healing?

A

NSAIDs
Corticosteroids
Immunosuppressants
Anti-neoplastic drugs

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16
Q

What are the 3 components to GCS?

A

Eye movements
Verbal responses
Motor responses

EVM

17
Q

What is the total score for GCS?

17
Q

What are the 3 components to GCS?

A

Eye movements
Verbal responses
Motor responses

EVM

18
Q

What is the max score for eye opening?

19
Q

What is the max score for verbal responses?

20
Q

What is the max score for motor responses?

21
Q

What are the scores for eye opening in GCS?

A

4 - spontaneous
3- to speech
2 - to pain
1 - no response

22
Q

What are the scores for verbal responses in GCS?

A

5 - orientated / fully aware
4 - confused conversation
3 - inappropriate words
2 - incomprehensible sounds
1 - no response

23
What are the scores for motor responses for GCS?
6 - obeys commands 5 - localises to pain 4 - withdraws from pain 3 - abnormal Flexion 2 - abnormal extension 1 - no response
24
What is the lowest score you can get with GCS?
3
25
When should warfarin be stopped before surgery?
5 days before
26
When should DOACs be stopped before surgery?
48-72hrs depending on procedure and renal function
27
When should LMWHs be stopped before surgery?
12 hrs if its prophylactic 24hrs if its therapeutic
28
When should ADP antagonists like clopidogrel, Ticagrelor and Prasugrel be stopped prior to surgery (unless it’s coronary stenting)?
5-7days before
29
When should NSAIDs be stopped prior to surgery?
2-3 days
30
When should Metformin be stopped prior to surgery?
Omit on the day
31
When should SGLT-2 inhibitors be stopped prior to surgery?
3 days before (risk euglycemic DKA)
32
When should sulfonyl urea’s like gliclazide be stopped before surgery?
Morning of