cliot (version 1.0.0)

vurx_index: Vesicoureteral Reflux Index (VURx)

Description

Calculates the VURx Index to predict the likelihood of spontaneous resolution of primary vesicoureteral reflux (VUR) in children. The score is based on the grade of reflux (using the International Reflux Study classification), the timing of reflux during voiding cystourethrogram (VCUG), and the patient's sex.

Usage

vurx_index(vur_grade, reflux_timing, sex)

Value

A list containing:

VURx_Score

The calculated index score (Range 0-6).

Interpretation

Prediction regarding spontaneous resolution success.

Arguments

vur_grade

Numeric (1-5). The grade of VUR (1-5). Grades 1-3: 0 points. Grade 4: 3 points. Grade 5: 4 points.

reflux_timing

String. The phase of the bladder cycle when reflux occurs. "voiding": Reflux occurs only during voiding (0 points). "filling": Reflux occurs during filling (1 point).

sex

String. Patient's sex. "female": 0 points. "male": 1 point.

References

Garcia-Roig M, Ridley DE, McCracken C, et al. Vesicoureteral Reflux Index: a predictive tool for spontaneous resolution of primary vesicoureteral reflux. J Urol. 2011;186(6):2391-2397. doi:10.1016/j.juro.2011.07.109

Examples

# Example 1: High likelihood of resolution
# Grade 2 (0), Voiding (0), Female (0)
# Score = 0
vurx_index(2, "voiding", "female")

# Example 2: Low likelihood of resolution
# Grade 4 (3), Filling (1), Female (0)
# Score = 4
vurx_index(4, "filling", "female")