NBME Step 2 CK Form 8 Detrusor hyperactivity (NBME Answers)

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submitted by ∗step_prep(148)

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Patient with risk factors for spastic bladder (MS) has presentation consistent with urgency incontinence (urge to void immediately with loss of urine before reaching the bathroom at times), which is caused by detrusor hyperactivity/instability
Stress incontinence: Loss of urine with cough or increased abdominal pressure, caused by urethral hypermobility or sphincter deficiency
Overflow incontinence: Incomplete emptying of bladder leading to leak with overfilling; patient would have increased postvoid residual

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tinydoc But why is the answer not MS? Is it just because the way the question was worded asked what is the cause of the patients symptoms as opposed to what is the underlying cause? +1

drmohandes MS is episodic, this thing is lasting for 6 months. +

osler_weber_rendu Many times MS causes a neurogenic bladder rather than overactive +1

adong Overactive bladder is a type of neurogenic bladder though. I agree that detrusor hyperactivity is just a more specific answer +1

namesthegame22 Weird wording! +