SAQ 665 – Anaesthetics – mixed acidosis and extubation readiness

Review Completed

Marked out of 16.00

You are the consultant receiving morning handover from your registrar. A 30-year-old woman is in the resuscitation bay after being intubated overnight for an altered conscious state. Her initial arterial blood gas is shown below.

Parameter	Result	Reference range
pH	6.89	7.35-7.45
pCO2	72 mmHg	35-45
pO2	60 mmHg	80-110
HCO3	10 mmol/L	23-32
Base excess	-20.5	-2 to +2
Sodium	136 mmol/L	135-145
Potassium	4.0 mmol/L	3.5-5.5
Chloride	90 mmol/L	90-115
Urea	16 mmol/L	3.5-8.0
Creatinine	0.14 mmol/L	0.06-0.12

Showing your working, provide two (2) calculated parameters that help interpret these results and state the significance of each.

(Marked out of 4.0)

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List four (4) likely differential diagnoses for this presentation.

(Marked out of 4.0)

/ 4

She improves overnight and the registrar hopes she can be extubated. Complete the table with four (4) patient factors required for safe extubation and how you would confirm adequacy of each factor.

(Marked out of 8.0)
</p> <table class="saq-prop-table"> <thead> <tr> <th>Patient factor</th> <th>How to ensure adequacy</th> </tr> </thead> <tbody> <tr> <td>1.</td> <td></td> </tr> <tr> <td>2.</td> <td></td> </tr> <tr> <td>3.</td> <td></td> </tr> <tr> <td>4.</td> <td></td> </tr> </tbody> </table> <p>

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Total Score: 0 / 16

Percentage: 0%

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