Neurogenic Bladder Dysfunction with Intact Bladder Sensation
Understanding the Neuroanatomical Basis
- CVA and other suprapontine lesions typically preserve bladder sensation because sensory pathways remain intact while voluntary control mechanisms are disrupted 1
- These patients characteristically experience detrusor overactivity with awareness - they feel the urge to void but cannot inhibit bladder contractions 2
- Pelvic floor muscle training is specifically recommended for patients with multiple sclerosis or cerebrovascular accident to improve urinary symptoms, indicating preserved sensation allows for voluntary muscle control 2
- Cauda equina lesions produce lower motor neuron dysfunction with characteristically impaired perineal sensation and often progress to a "paralysed, insensate bladder" 3, 4
- Cauda equina syndrome with retention (CESR) specifically involves neurogenic retention with an insensate bladder 4
- Myelomeningocele causes sacral and lower spinal cord malformations with universal bowel and bladder dysfunction, where sensation is curiously spared in legs but bladder sensation is typically impaired 5
- Paraplegia (spinal cord injury) involves suprasacral spinal lesions that typically disrupt both motor and sensory pathways, resulting in impaired bladder sensation 1