Treatment of Multiple System Atrophy with Neurogenic Incomplete Bladder Emptying and Elevated Postvoid Residual Volume

Multiple System Atrophy (MSA) causes progressive autonomic and motor dysfunction. A clinically important urological complication is neurogenic incomplete bladder emptying, particularly when the postvoid urinary residual (PVR) volume exceeds 100 mL.

Clinical scenario: Neurogenic incomplete bladder emptying with a postvoid urinary residual volume greater than 100 mL. This degree of retention in the context of MSA carries specific management implications that differ from routine urinary dysfunction.

Addressing elevated PVR in MSA requires balancing urological benefit against systemic tolerability constraints particular to this condition. Pharmacological options targeting urethral outlet resistance exist, but their use involves significant precautions in this population. Additional procedural measures may also be relevant depending on the degree of retention.

Partial treatment note: Management may include agents that act on urethral tone to facilitate bladder emptying — however, a notable systemic caution applies in MSA that affects how and whether this approach is pursued. The complete structured protocol covers the full management pathway and the relevant safety considerations.

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References

DOI: 10.1212/cont.0000000000001598

Neurogenic incomplete bladder emptying can be improved with α-adrenergic blockers that act on the urethra (such as tamsulosin or prazosin); however, they can worsen orthostatic hypotension.
Clean intermittent self-catheterization may be recommended in patients with a postvoid residual volume of greater than 100 mL.

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