SAQ 706 – Orthopaedics – knee aspiration and gonococcal septic arthritis

A 40-year-old man presents to your ED with 3 days of right knee pain and swelling.

He has no significant past history and takes no regular medications. Examination reveals a significant effusion, and you decide to aspirate the knee joint.

Complete the table listing the likely results for each type of aspirate.

(Marked out of 6.0)
</p> <table class="saq-prop-table" style="width: 100%; max-width: 100%; table-layout: fixed; border-collapse: collapse;"> <thead> <tr> <th style="overflow-wrap: anywhere; word-break: normal; white-space: normal; vertical-align: top; box-sizing: border-box;">Type of aspirate</th> <th style="overflow-wrap: anywhere; word-break: normal; white-space: normal; vertical-align: top; box-sizing: border-box;">WBC count per microlitre</th> <th style="overflow-wrap: anywhere; word-break: normal; white-space: normal; vertical-align: top; box-sizing: border-box;">PMN %</th> </tr> </thead> <tbody> <tr> <td style="overflow-wrap: anywhere; word-break: normal; white-space: normal; vertical-align: top; box-sizing: border-box;">Normal</td> <td style="overflow-wrap: anywhere; word-break: normal; white-space: normal; vertical-align: top; box-sizing: border-box;"></td> <td style="overflow-wrap: anywhere; word-break: normal; white-space: normal; vertical-align: top; box-sizing: border-box;"></td> </tr> <tr> <td style="overflow-wrap: anywhere; word-break: normal; white-space: normal; vertical-align: top; box-sizing: border-box;">Inflammatory</td> <td style="overflow-wrap: anywhere; word-break: normal; white-space: normal; vertical-align: top; box-sizing: border-box;"></td> <td style="overflow-wrap: anywhere; word-break: normal; white-space: normal; vertical-align: top; box-sizing: border-box;"></td> </tr> <tr> <td style="overflow-wrap: anywhere; word-break: normal; white-space: normal; vertical-align: top; box-sizing: border-box;">Septic</td> <td style="overflow-wrap: anywhere; word-break: normal; white-space: normal; vertical-align: top; box-sizing: border-box;"></td> <td style="overflow-wrap: anywhere; word-break: normal; white-space: normal; vertical-align: top; box-sizing: border-box;"></td> </tr> </tbody> </table> <p>

/ 6

The Gram stain of the knee aspirate reveals Gram-negative diplococci. What is the likely organism?

(Marked out of 1.0)

/ 1

State four (4) key management steps for this patient.

(Marked out of 4.0)

/ 4

Total Score: 0 / 11

Percentage: 0%