Cauda equina syndrome

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QUESTION 1 OF 1

66.A 34-year-old lady presents to the ED with a 5-day history of bilateral sciatica and a 24-hour history of episodes of bladder incontinence. She has a history of LBP for some years.
Which of the following statements correctly describes her evaluation?

QUESTION ID: 3196

1. 24 hours from onset of symptoms to surgery is a critical cut off for bladder function.
2. A poor correlation exists between clinical finding and MRI findings.
3. A post void residual (PVR) bladder volume of 125mls is highly significant and establishes a diagnosis of cauda equina syndrome with a 98% positive predictive value.
4. An MRI examination is not required if PVR bladder volume is more than 550mls.
5. PR examination is a sensitive and specific test of cauda equina function, as the nerves supplying anal function tolerate pressure poorly.
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