Abstract
To establish the initial (before pressure equilibrium) and initial resting intravesical and abdominal pressure in the sitting position using air-filled catheters, to assess the correlation between these pressures and obesity-related measurements, and to estimate if obesity-related measurements can be a guide to interpret initial and initial resting pressures in urodynamic testing. Patients with non-neurogenic lower urinary tract symptoms referred for urodynamic testing in our center were consecutively enrolled in a prospective study from August 2022 to October 2022. The correlation between the initial and initial resting pressures (before and after pressure equilibrium) and obesity-related measurements were analyzed using Pearson's correlation coefficient and multiple linear regression analysis. Ninety-eight patients aged 56 ± 16 were studied. The 95% range of the initial intravesical and abdominal pressure were 18-42 cmH2 O and 21-60 cmH2 O, respectively. The initial resting intravesical, abdominal, and detrusor pressure in the 95% range were 17-41, 16-42, and -5 to 4 cmH2 O, respectively. Over the multiple analysis, abdominal fat thickness, and body mass index (BMI) correlated independently with initial intravesical pressure, and only visceral fat grade correlated with initial abdominal pressure. BMI correlated independently with initial resting intravesical pressure. Our results determined the ranges of values of both initial and initial resting pressures in the air-charged system. Meanwhile, the present study indicated the obesity-related measurements may be used as a guide to interpret the initial and initial resting pressures in urodynamic testing, and may provide a reference for the quality control of these pressures.
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