Effects of dietary intake and fluid consumption on urodynamic outcomes in patients with lower urinary tract symptoms undergoing bladder rehabilitation.

BACKGROUND

The bladder health rehabilitation process depends on dietary choices and drinking patterns, which determine diet quality and hydration levels. Previous studies have suggested that dietary patterns and hydration levels affect urodynamic measurements, yet research on how combined dietary and fluid intake affects bladder rehabilitation outcomes remains limited.

OBJECTIVE

The study aims to assess the effects of dietary quality and fluid intake on urodynamic outcomes, symptom reduction, and functional recovery in patients undergoing a structured bladder rehabilitation program.

METHODOLOGY: The study tracked 2,400 bladder rehabilitation patients in a retrospective cohort study, which divided participants into three dietary quality groups (low, moderate, and high) and three fluid intake groups (low, moderate, and high). The study collected data on baseline demographics and clinical characteristics, as well as nutritional intake and urodynamic parameters. Post-rehabilitation outcomes included bladder capacity, detrusor pressure, compliance, urinary frequency, urgency, incontinence, nocturia, and quality-of-life (QoL) measures. The study analyzed nutrient-specific associations, diet-fluid interactions, and adherence rates. The researchers used multivariate regression analysis to determine which factors predicted functional improvement.

RESULTS

The post-rehabilitation study showed major urodynamic and symptomatic advancements, which included increased bladder capacity of 34 mL (p < 0.001) and decreased detrusor pressure of 3.4 mmHg (p = 0.002) and reduced urinary frequency of 1.3 episodes per day (p < 0.001) and improved quality of life by 5.8 points (p < 0.001). The study found that high diet quality, combined with moderate-to-high fluid intake, led to greater functional improvement, with both factors statistically significant (β = +0.21, p = 0.004; β = +0.18, p = 0.009). The combined high-diet and moderate-fluid groups achieved the best results, with improved bladder compliance, reduced urgency, and higher clinical success rates. The nutrient-specific analysis showed that fiber, potassium, and protein intake were positively associated with improvements in capacity and flow, whereas sodium and evening fluid timing were negatively associated.

CONCLUSION

The bladder rehabilitation process requires both dietary quality and fluid intake, as these factors determine functional improvement. The study found that optimizing nutrition, hydration, and compliance with behavioral interventions led to better urodynamic results, improved symptom management, and enhanced quality of life. The findings demonstrate that individual lifestyle-change methods are essential components of bladder rehabilitation programs.