Estimulação do nervo tibial posterior no tratamento da bexiga hiperativa / Transcutaneous posterior tibial nerve stimulation for the treatment of overactive bladder syndrome

AUTOR(ES)

Andrea de Andrade Marques

DATA DE PUBLICAÇÃO

2008

RESUMO

Introduction: Overactive Bladder (OAB) is a prevalent syndrome characterized by miccional urgency, with or without urge-incontinence, usually with frequency and noctúria, in patients without infection or other pathologies. Conservative management has been recomended as first-line treatment for OAB. Among the different physiotherapeutic resources available, electrical stimulation has been used for about 30 years with good results, mainly with intra-cavitary probes. Objective: to evaluate the effects of transcutaneous electrical nerve stimulation of the posterior tibial nerve in the treatment of the OAB. Methodology: A total of 43 women were selected and divided into two different groups: Group I (Stimulation) received electrical stimulation during 30 minutes, twice a week, during 4 weeks, using a TENS current, biphasic (alternating) with a pulse duration of 200 microseconds, stimulation frequency of 10Hz, with VIF (variation of intensity and frequency) through one channel and two electrodes. The intensity level was kept immediately under the motor threshold. Group II (Control) was submitted to the same protocol, but without electrical stimulation. Eight sections were done. Outcome measures included urodynamics exam and voiding diary before and after de treatment. Results: There was statistical difference between Control and Stimulation group at the end of the treatment regarding to daytime urinary frequency (p=0.0001), and noctúria (p=0.0186). Regarding to urgency symptom, the difference found between the groups before and after treatment was p=0.05, improving from 3.5 (SD +/- 3.9) to 1.5 (SD +/- 1.5) episodes per day. There was improvement of stress urinary incontinence episodes in the Stimulation Group when compared to Control Group (p=0.0273). We didn?t find statistical difference of urgeincontinence symptoms between the groups, before and after the treatment. The maximal cystometric capacity increased statistically at Stimulation Group increasing from 322.9ml to 381.0ml in media (p=0.0328). We didn?t find difference between Stimulation and Control Group regarding first desire to void. In 4 cases from Stimulation Group and 5 cases from the Control Group, involuntary detrusor contraction (IDC) disappeared. Patients who maintained IDC (n=14), we didn?t find statistical difference regarding the intensity of the contraction or bladder volume at first contraction when compared Control and Stimulation Group. Conclusion: Transcutaneous posterior tibial nerve stimulation proved to be beneficial to patients with OAB, improving objective and subjective parameters

ASSUNTO(S)

overactive bladder bexiga hiperativa electrical therapy eletroterapia tibial nerve nervo tibial posterior

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