Divided into obstructive and irritative categories.
Obstructive symptoms include straining, hesitancy, weak stream, intermittency, and sense of incomplete bladder emptying.
Irritative symptoms include urgency, frequency and nocturia.
Uroflow study is a objective, noninvasive way to evaluate such symptoms.
Uroflow study requires at least 150 cc of urine volume.
Abnormal results in uroflow is seen in patients with detrusor muscle dysfunction.
Peak urinary flow rates of less than 15 mL/s and increased urine residuals often present in men with BPH.