Background: Acute urine retention (ARU) due to benign prostatic hypertrophy (BPH) is a common urological emergency for hospital admission that is usually managed by urethral catheterization. The present study was conducted to assess outcome of initial trial without catheter in benign prostatic hyperplasia patients with IPP of different grades presented with acute urinary retention. Materials & Methods:58 patients of acute urine retention (AUR) of both gender sunder went trans-abdominal ultrasound (TAUS). International prostate symptom score (IPSS), serum prostate specific antigen (PSA), total prostate volume, IPP and its grade, peak flow rate of voided patients, post-void residual urine volume (PVRU) was recorded. Based on intravesical prostatic protrusion, patients were classified into 3 groups. Group I had IPP of <5 mm, group II had 5-10 mm and group III had >10 mm. Results: The mean PSA (ng/ml) was 5.90, 5.32 and 4.92. The mean TPV (ml) was 43.6, 48.1 and 43.7. The mean TZV (ml) was 11.3, 20.4 and 30.2 and the mean TZI was 0.34, 0.39 and 0.52 in group I, II and III respectively. The difference was significant (P< 0.05). There was significant difference in total score, irritative sub score and obstructive subscore of IPSS, QOL, Qmax and PVR in group I, II and III (P< 0.05). Conclusion: IPP is a helpful indicator for determining whether a voiding trial after ARU was successful.