Answer to the case
1. Case 1-3-7 shows high-pressure sustained detrusor overactivity with a pressure
rising to around 80 cmH2O. The contraction is also sustained, lasting for more
than 5 min.
2. This is the classical urodynamic traces seen with an upper motor neuron type of
spinal cord injury, resulting in high-pressure neurogenic detrusor overactivity,
characterised by a ‘saw toothed’ appearance to the detrusor trace.
3. This can lead to small volume, thick-walled bladder with ureteric reflux and
upper tract decompensation. Renal failure may ensue.
4. This patient should be on anti-cholinergic medication and practice intermittent
self-catheterisation.