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Detrusor-sphincter dyssynergia
J A Barsanti1, J R Coates, J W Bartges
1Department of Small Animal Medicine, College of Veterinary Medicine, University of Georgia, Athens, USA.
Summary
Detrusor-sphincter dyssynergia is a rare feline condition where the urethral sphincter fails to relax during bladder contraction due to a central nervous system lesion. This review helps differentiate it from common causes of bladder emptying failure.
Area of Science:
- Veterinary Neurology
- Urology
Background:
- Detrusor-sphincter dyssynergia (DSD) is characterized by the urethral sphincter's failure to relax during detrusor muscle contraction.
- This neurological condition stems from a central nervous system lesion affecting the micturition pathways between the brain stem and sacral spinal cord.
Observation:
- DSD is exceptionally rare in domestic cats.
- Clinical presentation can mimic more common conditions causing bladder emptying failure, such as local urethral inflammation or edema.
Findings:
- The core issue in DSD is a lack of coordinated relaxation between the bladder's detrusor muscle and the urethral sphincter.
- Lesions impacting the neural control of micturition are the underlying cause.
Implications:
- Accurate diagnosis of DSD is crucial for appropriate feline patient management.
- Distinguishing DSD from local urethral causes is essential to avoid misdiagnosis and ineffective treatments.
- Understanding the neuroanatomy of micturition aids in recognizing this rare disorder.