Detrusor overactivity

The normal detrusor if filled slowly accepts 300 - 600 ml without rise in pressure.
If the bladder undergoes phasic contraction while the patient is trying to inhibit voiding this is called Detrusor overactivity. Note the low bladder capacity

This is a textbook example of Detrusor overactivity. In practice there can be much lower amplitude contractions and much larger.
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