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Some children with vesical sphincter dyssynergia are refractory to conventional pharmacologic therapy. Three such patients were treated using a method of sphincter retraining, biofeedback. They observed the urinary sphincter electromyogram while voiding to appreciate visually the abnormality. Two children learned to suppress voluntarily the inappropriate sphincter contraction during voiding. This normalized the subsequent electromyographic recordings and offered subjective improvement in the voiding symptoms. Retraining the urethral sphincter dysfunction may be approached using biofeedback techniques in selected patients.
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Maizels et al. (1979) studied this question.
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