Autonomic Dysreflexia and Emergencies in Neurogenic Bladder
摘要
Patients with neurogenic bladder dysfunction due to spinal cord injury, multiple sclerosis, or other neurological disorders face a higher risk of acute urological emergencies. These conditions necessitate immediate medical intervention to avert severe complications and preserve renal function while enhancing life quality. Quick diagnosis and treatment are crucial even for patients under regular follow-up to prevent associated morbidity and mortality. Neurogenic patients may exhibit atypical symptoms in emergencies, differing from the general population. Autonomic dysreflexia (AD) is more prevalent in patients with spinal cord injuries above T6 and results from uncontrolled sympathetic activity. AD can be a life-threatening condition if not promptly managed. AD episodes necessitate immediate medical attention to identify and treat the trigger causes such as bladder distension or bowel impaction while monitoring blood pressure and assuring cardiovascular stability. Urinary tract infections (UTIs) and urinary sepsis are frequent in neurogenic bladder patients, often presenting with non-specific symptoms such as changes in voiding patterns, increased spasticity, and cloudy urine. Early identification and management are vital to prevent sepsis and in patients with spinal injuries above T6 to avoid AD crises. Empirical antibiotic therapy should started immediately, guided by previous urine cultures if available. Imaging studies are essential for febrile UTIs to check for anatomical changes of the upper urinary tract. Priapism, particularly low-flow priapism, is more common in spinal cord injury patients and requires swift intervention to prevent permanent cavernous tissue damage. Treatment involves blood aspiration from the corpora cavernosa, intracavernous injection of phenylephrine and eventually surgery. Complications from augmented bladders, neobladders, and urinary diversions include metabolic disturbances, bladder stone formation and bladder perforation often requiring rapid surgical repair. Overall, the management of neurogenic bladder emergencies involves a combination of preventive strategies, rapid diagnostic measures, and tailored therapeutic approaches to minimize complications and enhance patient outcomes.