Cerebrovascular Accident and Neurogenic Bladder Dysfunction

Pathophysiology and Clinical Presentation

• Stroke causes neurogenic bladder through disruption of cortical control while preserving afferent sensory pathways from the bladder, resulting in preserved sensation 1
• Post-stroke bladder dysfunction affects 25-50% of stroke survivors, with urinary incontinence being the predominant symptom, and the most common urodynamic finding is detrusor overactivity (hyperreflexia with urge incontinence) 2, 3

Urodynamic Patterns and Guidelines

• The American Heart Association and American Stroke Association recommend considering the impact of stroke on bladder function, as detrusor overactivity is the most common finding, causing urgency, frequency, and urge incontinence 2

Urinary Retention After Stroke

Clinical Risk Factors and Incidence

• Age is a risk factor for bladder dysfunction generally, according to the American Heart Association 4, 5
• 29% of acute stroke patients develop urinary retention initially, decreasing to 15-20% by hospital discharge as neural recovery occurs, and by one year post-stroke, only 15% have persistent retention, as reported by the American Stroke Association 6, 4, 5

Common Pitfalls

• Impaired cognitive awareness of the need to void is often overlooked as a contributing mechanism, effectively creating functional retention, and this awareness deficit correlates with mortality and need for nursing home care at 3 months, as noted by the American Heart Association 4, 5