Anaesthetics: Pre-Op Assessment COPY Flashcards

1
Q

Side effects of general anaesthesia?

A
  • Drug induced reversible coma
  • CNS, cardiac and respiratory depression
  • Drug interactions
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2
Q

Side effects of regional anaesthesia?

A
  • Profound sympathectomy
  • Neurological sequelae
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3
Q

What considerations are there in the pre-op assessment?

A
  • Patient considerations including co-morbidities and unknown pathologies
  • Nature of the surgery
  • Anaesthetic techniques
  • Post-op care
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4
Q

What is the role of the anaesthetist pre-op?

A
  • Assess
  • Identify high risk
  • Optimise
  • Minimise risk
  • Inform and support patient decisions
  • Consent
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5
Q

What potential anaesthetic problems are there?

A
  • Airway
  • Spine
  • Reflux
  • Obesity
  • Rarities/ family history (malignant hyperpyrexia, cholinesterase deficiency)
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6
Q

How is the cardiovascular system assessed pre-op?

A
  • ECG
  • Exercise tolerance test
  • Echo
  • Myocardial perfusion scan
  • Stress Echo
  • Cardiac catheterisation
  • CT coronary angiogram
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7
Q

How is the respiratory system assessed pre-op?

A
  • Saturations
  • ABG
  • CXR
  • Peak flow measurements
  • FVC/FEV
  • Gas transfer
  • CT chest
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8
Q

How are patients ‘graded’ for surgery?

A

ASA grade

  • ASA 1: Otherwise healthy patient
  • ASA2: Mild to moderate systemic disturbance
  • ASA3: Severe systemic disturbance
  • ASA4: Life threatening disease
  • ASA5: Moribund patient
  • ASA6: Organ retrieval
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9
Q

Give examples of risk assessment tools.

A

Surgical outcome risk tool

  • American college of surgeons surgical risk calculator
  • STOP-BANG questionnaire
  • Nottingham hip fracture score
  • P-POSSUM
  • CR-POSSUM
  • Q-POSSUM
  • V-POSSUM
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10
Q

What conditions are included on the cardiac risk index?

A
  • High risk surgery
  • Ischaemic heart disease
  • Congestive heart failure
  • Cerebrovascular disease
  • Diabetes
  • Renal failure
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11
Q

How is exercise tolerance assessed?

A

METS Score: Can you do the following activities without getting breathless:

  • 2 METS: walk around the house
  • 3 METS: do light housework
  • 4 METS: walk 100-200 metres on the flat
  • 5 METS: climb a flight of stairs or walk up a hill
  • 6 METS: walk on the flat at a brisk pace
  • 7 METS: play golf, mountain walk, dance or any form of exercise
  • 8 METS: run a short distance
  • 9 METS: do either strenuous exercise or heavy physical work
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12
Q

What medical conditions can be optimised pre-op?

A
  • Hypertension
  • Ischaemic heart disease
  • Heart failure
  • Asthma
  • COPD
  • Diabetes
  • Epilepsy
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13
Q

What can be changed lifestyle wise pre-op?

A
  • Smoking status
  • Alcohol consumption
  • Obesity
  • Exercise
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14
Q

How is medication affected by pre-op preparations?

A

Most continue as normal, especially:

  • Inhalers
  • Anti-anginals
  • Anti-epileptics

Exceptions:

  • Anti-diabetic medication
  • Anticoagulants
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