Abstract
A new type of questionnaire for BPH, the DAN-PSS symptom score system, was used in an attempt to predict infravesical obstruction determined by pressure-flow study. In 50 consecutive patients a reliable questionnaire and a pressure-flow was obtained. Almost none of the unobstructed patients had a total obstructed index (TOI) of more than 6, whereas this was the case in half of the obstructed patients. This difference was statistically significant. This study indicates, that if the total obstructed index (TOI) is more than 6, the patient most likely have an infravesical obstruction. With this limit the DAN-PSS-score system can predict infravesical obstruction with a sensitivity of 42% and a specificity of 89%. With the new concept of combining quantity with quality in a symptom score system, a strong correlation between symptoms and objective findings has been found.
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