Comparison Between Invasive Pressure Flow Study and Non-invasive Penile Cuff Test
Comparison Between Invasive Pressure Flow Study and Non-invasive Penile Cuff Test
To provide evidence of promising tests to noninvasively diagnose bladder outlet obstruction
 (BOO) in men with benign prostatic hyperplasia.

 1. Penile cuff test provides a means of obtaining a urodynamic diagnosis with a high level
 of accuracy without the morbidity and expense of invasive Pressure flow study.

 2. Penile cuff test may be particularly useful in the counseling of patients prior to
 benign prostatic hyperplasia operation. Patients diagnosed as obstructed following a
 penile cuff test can be reassured that surgery has a high chance of resulting in
 symptomatic benefit
Inclusion Criteria:

 1. Male patients with Low Urinary Tract Symptoms over 6 months. (International prostatic
 symptom score >= 12)

 2. Patients scheduled to have pressure flow study.

 3. Able to give fully informed consent

 Exclusion Criteria:

 1. Patients with urologic malignancies such as prostate cancer and bladder cancer

 2. Patients underwent urethral, prostate surgery

 3. Patients with urethral stricture or bladder diverticulum or bladder neck contracture

 4. seems not to be appropriate to this study by the decision of investigators because of
 any other reasons