Patients in whom postoperative ultrasound reveals downgrading may not require postoperative renal scan to rule out obstruction. However, those with preoperative function less than 45% may exhibit functional changes greater than 5% that can be determined by postoperative renal scan.
This study demonstrates that total cystometric bladder capacity, maximum detrusor pressure and detrusor leak point pressure increase significantly in patients with myelomeningocele following puberty. The increase in bladder capacity could be attributed to increasing bladder outlet resistance resulting from prostate gland enlargement in males and estrogenization in females. A significant number of patients spontaneously achieve continence at puberty, and continence becomes more likely when increased total cystometric bladder capacity is not associated with an increase in maximum detrusor pressure. Finally, no significant postpubertal upper urinary tract deterioration was observed in our series.
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