Relief of BPO or improvement in quality of life?

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Abstract
Benign prostatic hyperplasia (BPH) can cause benign prostatic enlargement with subsequent benign prostatic obstruction (BPO) and lower urinary tract symptoms (LUTS). A reduction in the size of the prostate has long been considered one of the most important treatment goals. However, there is a poor correlation between prostate size and both LUTS and BPO, and between BPO and symptoms. Today, the urologist's primary objectives are to minimize symptoms, relieve BPO and decrease the morbidity associated with BPO. From the patient's point of view, rapid relief of LUTS and immediate improvement in associated quality of life (QOL) are the most important factors. Although there is a good correlation between relief of symptoms (as measured by the International Prostate Symptom Score [I-PSS], for example) and associated improvement in bothersomeness and QOL, particularly that associated with filling ('irritative') symptoms, it is still important to quantify LUTS-related bothersomeness and QOL. Various questionnaires have been developed to measure bothersomeness (e.g. Symptom Problem Index [SPI], Danish PSS [DAN-PSS], International Continence Society BPH Study Group [ICSmale] questionnaire) and QOL (e.g. I-PSS-QOL, BPH Impact Index [BII] and QOL9 BPH-specific questionnaire). In addition, the impact of treatment on sexual function should also be taken into account when judging the overall well being or QOL of the patient. A grading system to evaluate the global improvement in patients following treatment has been established. Patients are either graded as showing 'slight', 'moderate' or 'marked' improvement, with the reduction in I-PSS or BII scores required for each classification dependent on baseline symptom severity. Medical treatment strategies designed to alleviate the symptoms of BPH and consequently improve the patient's QOL are now becoming increasingly important.

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