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YEAR 3 OSCE > blood bottles > Flashcards

blood bottles Flashcards

1
Q

What common tests are carried out with the purple bottle? (8) - 4 main ones

A
  1. FBC
  2. blood film
  3. ESR
  4. HbA1c

others

  1. reticulocytes
  2. folate
  3. monospot - EBV
  4. parathyroid hormone
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2
Q

How many times should you invert the purple bottle and why? (2)

A
  • 8 times

- to mix the blood with EDTA

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3
Q

How much should you fill the purple bottle? (2)

A
  1. 1ml for FBC

2. full bottle - ESR

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4
Q

What is the pink bottle used for? (3) - 2 main ones

A
  1. group and save
  2. cross match

others

  1. direct coombs test = haemolytic anaemia
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5
Q

How many times does the pink bottle need inverting and why? (2)

A
  • 8 times

- mix with EDTA

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6
Q

How much should you fill the pink bottle?

A

1ml at least

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7
Q

What is the blue bottle used for? (6) - 3 main ones

A
  1. coagulation screen
  2. INR
  3. D-dimer

others

  1. INR
  2. activated partial thromboplastin ratio (APTR)
    - monitors patients on IV heparin
  3. anti Xa assay - LMWH patients
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8
Q

What is the coagulation screen involve? (4)

A
  1. prothrombin time
  2. activated partial thromboplastin time
  3. thrombin time
  4. fibrinogen
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9
Q

What does the d-dimer test for?

A

thrombosis - dvt or PE

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10
Q

How many times does the blue bottle need to be inverted and why? (2)

A

3-4 times

  • in order to mix it with the anticoagulant
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11
Q

How much should you fill the blue bottle?

A

up to the marked line (fully to the top)

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12
Q

When should INRs be taken?

A

morning

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13
Q

when should anti Xa assays be taken?

A

3-4 hours post tinzaparin

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14
Q

When do you use a yellow bottle? (10)

A
  1. U&Es
  2. CRP
  3. LFTs
  4. amylase
  5. Ca
  6. phosphate
  7. magnesium
  8. TFTs
  9. lipid profiles
  10. troponins

others

  1. iron studies - ferritin
  2. vitamins
  3. creatinine kinase
  4. urate
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15
Q

How many times does the yellow bottle need to be inverted? (2)

A
  • 5 times

- to mix the sample with silica and separator

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16
Q

How much blood in yellow bottles?

A

depends on the number of tests you are doing

17
Q

What is the grey bottle used for? (2)

A
  1. glucose

2. lactate

18
Q

How many times does the grey bottle need to be inverted and why and what are these agents? (3)

A

8 times

  • to mix the sample with the fluoride and oxalate
  • these are antiglycotic and anticoagulant agents
19
Q

How much do you fill the grey bottle? (2)

A
  1. tiny amount for glucose

2. atleast 1ml for lactate

YEAR 3 OSCE (38 decks)

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