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Flashcards in ASA grading and pre-op investigations Deck (24)
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1

ASA grade 1

2

ASA grade 2 

3

ASA grade 3 

4

ASA grade 4 

5

ASA grade 5 

6

ASA grade 6 

7

ASA grade E 

8

What scale is used to classify the complexity of surgery? 

The four-point scale (NICE) 

9

What is the test sensitivity?

The sensitivity of the test is the proportion of diseased patients who have a positive test result

10

What is the test's specificity?

The specificity of the test is the proportion of healthy patients who have a normal test result

11

What is Positive Predictive Value (PPV)

The positive predictive value (PPV) is the likelihood of a patient with a positive result having disease

12

What is the Negative Predictive Value (NPV)?

The negative predictive value (NPV) is the likelihood of a patient with a normal result not having disease

13

What factors do recommendations for preoperative tests depend on? 

  • age
  •  surgical severity 
  • whether the patient has systemic disease

14

What are the criteria for ordering peri-operative tests?

15

Who do we offer Sickle-cell test to? (peri-operatively)

Sickle cell tests should be offered to anyone with:

  • a family history of homzygous disease or heterozygous trait
  • African or Afro-Caribbean ancestry; Asian ancestry; Middle-Eastern ancestry; East-Mediterranean ancestry (including Cyprus).

16

Who do we offer pregnancy test to (preoperatively)? 

Any woman who says she may be pregnant 

17

What are examples of indications to order FBC (pre-operatively)?

 

suspected anaemia

18

What are examples of indications to order CXR (pre-operatively)?

Recent respiratory illness which is still symptomatic 

19

What are examples of indications to order FBC and coagulation screen (pre-operatively)?

History of prolonged bleeding 

20

What are examples of indications to order ECG (pre-operatively)?

History of palpitations 

21

What are examples of indications to order respiratory function tests and ABGs (pre-operatively)?

severe respiratory disease

22

What are examples of indications to order ECHO (pre-operatively)?

in undiagnosed murmur

23

Why do we do cardiopulmonary exercise testing (CPX)?

What does it measure?

Major surgery puts the major stress on a body

  • It is a non-invasive procedure that involves progressively raising the level of exercise whilst monitoring the body’s metabolic state
  • to assess the extent to which oxygen delivery can be increased to meet the tissue needs
  • An important measure is the anaerobic threshold - the point at which oxygen delivery is no longer adequate and anaerobic metabolism starts.

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