Characteristics of Lower Urinary Tract Symptoms in Female Bladder Outlet Obstruction

Objective: To investigate the characteristics of lower urinary tract symptoms (LUTS) in female patients with bladder outlet obstruction (BOO), and provide basis for the diagnosis of female patients with BOO. Method: Based on the fact that BOO can be diagnosed when the maximum flow rate (Qmax) is < 12ml/s and the detrusor pressure at maximum flow rate (Pdet.Qmax) is > 20cmH2O. The differences in the incidence of LUTS between female patients with BOO and the control group (female patients without BOO) and the characteristics of LUTS in female patients with BOO of two different groups (one is < 50 years old while the other is ≥ 50 years old) was compared. Results: The main symptoms of LUTS were urine storage period (72.1%), and the urination frequency was the most common. The incidence of urinary retention in women over 50 years of age had increased (P<0.05), as well as urinary incontinence (P=0.087) and nocturia (P=0.091). The incidence of frequent urination, urgent urination, increased nocturia, insufficient urination and dysuria in female patients with BOO was higher than those female patients without BOO (P<0.05). The incidence of symptoms in the urine storage phase in BOO female patients were higher than that in urination phase (P<0.05), The second age group (patients ≥ 50 years of age) tends to have similar manifestation (P<0.05), but different in the first age group (patients < 50 years of age) (P>0.05). Conclusions: LUTS of female patients with BOO were mainly characterized by symptoms in the urine storage phase. Compared with female patients with LUTS without BOO, the incidence of frequent urination, urgent urination, nocturia, insufficient urination, and dysuria were higher.