Randomized Crossover-Controlled Evaluation of Simultaneous Bilateral Transcutaneous Electrostimulation of the Posterior Tibial Nerve During Urodynamic Studies in Patients With Lower Urinary Tract Symptoms
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Purpose: Transcutaneous tibial nerve stimulation (TTNS) has proven to be a valuable treatment option for various lower urinary tract conditions, such as overactive bladder syndrome and neurogenic detrusor overactivity. The aim of this study was to investigate acute changes in urodynamic parameters due to bilateral TTNS. Methods: Fifty-one patients (18–87 years; 61% female) with various lower urinary tract symptoms were enrolled in this study. They were single-blinded and randomly assigned to receive simultaneous bilateral TTNS either during their first urodynamic examination, followed by a second round using a placebo stimulation technique, or vice versa. Results: For subjects without signs of anatomical pathologies, the filling volume at the first desire to void (FDV) increased significantly by 54 mL (interquartile range [IQR], 26–81 mL; P<0.01) under the influence of TTNS compared to placebo. The maximum cystometric capacity increased by 41 mL (IQR, 10–65 mL; P=0.02). The median micturition volume of patients with pathological postvoid residual volumes (>100 mL) increased by 76 mL compared to patients without urinary retention (IQR, 6–166 mL; P=0.03). Conclusions: Compared to placebo, simultaneous bilateral TTNS showed significant improvements in bladder functioning, such as delayed FDV, increased maximum cystometric capacity, and reduced urinary retention. Patients with signs of anatomical pathologies did not seem to benefit from TTNS. Further studies need to be conducted to compare the effectiveness of bilateral versus unilateral TTNS.
Abstract
Purpose: Transcutaneous tibial nerve stimulation (TTNS) has proven to be a valuable treatment option for various lower urinary tract conditions, such as overactive bladder syndrome and neurogenic detrusor overactivity. The aim of this study was to investigate acute changes in urodynamic parameters due to bilateral TTNS. Methods: Fifty-one patients (18–87 years; 61% female) with various lower urinary tract symptoms were enrolled in this study. They were single-blinded and randomly assigned to receive simultaneous bilateral TTNS either during their first urodynamic examination, followed by a second round using a placebo stimulation technique, or vice versa. Results: For subjects without signs of anatomical pathologies, the filling volume at the first desire to void (FDV) increased significantly by 54 mL (interquartile range [IQR], 26–81 mL; P<0.01) under the influence of TTNS compared to placebo. The maximum cystometric capacity increased by 41 mL (IQR, 10–65 mL; P=0.02). The median micturition volume of patients with pathological postvoid residual volumes (>100 mL) increased by 76 mL compared to patients without urinary retention (IQR, 6–166 mL; P=0.03). Conclusions: Compared to placebo, simultaneous bilateral TTNS showed significant improvements in bladder functioning, such as delayed FDV, increased maximum cystometric capacity, and reduced urinary retention. Patients with signs of anatomical pathologies did not seem to benefit from TTNS. Further studies need to be conducted to compare the effectiveness of bilateral versus unilateral TTNS.
참고문헌 (25)
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