Hypothesis / aims of study
Sacral neuromodulation (SNM) is an established second-line therapy for functional disorders of the pelvic organs. Recently, a standardized electrode placement technique was described.
This study presents the follow-up data over 24 months using the standardized electrode placement technique, comparing the use of a curved versus straight stylet.
Study design, materials and methods
Single tertiary center, prospective study (August 2013 - June 2015) involving 40 patients with overactive bladder dry (OABD) and wet (OABW) and 15 with non-obstructive urinary retention (NOUR) refractory to first-line treatment. Primary outcome: successful tined lead procedure and intention to treat analysis at 12 and 24 months. Success was defined by >50% reduction in relevant parameters noted on a 3-days voiding diary and patient satisfaction.
Interpretation of results
The intention to treat (ITT) results of the straight lead placements are in line with the results reported by large trials. The ITT results of the curved lead placements are clearly higher. As the patient characteristics of this study are in line with those previously reported we believe this is related to the standardized implant technique and the curved design of the lead, making small adjustments in lead placement possible.