CORRELATION BETWEEN INTRAVESICAL PROSTATIC PROTRUSION (IPP) AND POSTOPERATIVE OUTCOMES IN PATIENTS WITH BENIGN PROSTATIC HYPERPLASIA

Abstract

Background: Intravesical prostatic protrusion (IPP) is increasingly recognized as a predictor of surgical outcomes in benign prostatic hyperplasia (BPH), but data correlating IPP with multiple postoperative parameters after transurethral resection of the prostate (TURP) remain limited, particularly in South Asian populations. Objective: To evaluate the correlation between pre-operative IPP diameter and three-month postoperative IPSS, Q-Max, PVR, and prostate volume in men undergoing TURP for BPH. Methods: A single-center longitudinal study included 110 adult male patients undergoing TURP, stratified into significant (>5 mm, n=55) and non-significant (<5 mm, n=55) IPP groups based on transabdominal ultrasonography. Shapiro–Wilk testing confirmed non-normal distribution for most continuous variables. Spearman rank correlation was used to assess associations between IPP and postoperative outcomes, with further post-stratification analysis across age. Results: IPP showed a significant moderate negative correlation with postoperative IPSS (p<0.001), a significant moderate positive correlation with Q-Max (p<0.001) and a significant low negative correlation with PVR (ρ = −0.444, p<0.001). No significant correlation existed between IPP and prostate volume (p=0.069). These correlations remained consistent across all stratified subgroups, with the strongest Q-Max correlation observed in patients aged 50–59 years (p<0.001). Conclusion: IPP is an independent, reproducible predictor of favorable functional outcomes following TURP, supporting its routine incorporation into pre-operative assessment for BPH surgical planning.