title: Monopolar versus bipolar transurethral resection of prostate for benign prostatic hyperplasia: Operative outcomes and surgeon preferences, a real-world scenario.
abstract: BACKGROUND
  Monopolar transurethral resection of prostate (M-TURP) is considered the gold standard for the management of bladder outlet obstruction due to benign prostatic hyperplasia. Its newly introduced modification, bipolar TURP (B-TURP), promises to overcome its most prominent shortcomings, namely bleeding and dilutional hyponatremia. Literature is conflicting regarding merits of B-TURP over M-TURP.
  
  
  OBJECTIVE
  To find a difference, if any, in perioperative outcomes between M-TURP and B-TURP in a real-wold setting.
  
  
  METHODS
  Prospective nonrandomized study.
  
  
  METHODS
  Operative outcomes of patients undergoing M-TURP and B-TURP from February 2014 to October 2015 were compared.
  
  
  METHODS
  Categorical data were compared by Fischer exact test and numerical data were compared by independent samples Mann-Whitney U-test. P <0.05 was considered statistically significant.
  
  
  RESULTS
  The mean size of prostate operated by bipolar technology was significantly greater than those operated by monopolar technology (38.12 ± 9.59 cc vs. 66.49 ± 22.95 cc; P < 0.001). The mean fall in postoperative serum sodium concentration was 0.99 ± 0.76 mEq/L for the B-TURP group as compared to 3.60 ± 2.89 mEq/L for the M-TURP group (P < 0.001). The mean drop in postoperative hemoglobin concentration (P = 0.28) was statistically insignificant, even though larger glands were operated by B-TURP. There were three instances of the transurethral resection (TUR) syndrome in the M-TURP group whereas no TUR syndrome occurred in the B-TURP group.
  
  
  CONCLUSIONS
  In spite of various contrary viewpoints in literature, surgeons prefer to operate on larger prostates using bipolar technology. B-TURP definitely reduces the incidence of bleeding and dilutional hyponatremia, making it a contender to replace M-TURP as the new gold standard.
authors.affiliation: Department of Urology, Institute of Postgraduate Medical Education and Research, Kolkata, West Bengal, India.
authors.forename: Vijay Kumar Sarma
authors.initials: VK
authors.lastname: Madduri
authors.affiliation: Department of Urology, Institute of Postgraduate Medical Education and Research, Kolkata, West Bengal, India.
authors.forename: Malay Kumar
authors.initials: MK
authors.lastname: Bera
authors.affiliation: Department of Urology, Institute of Postgraduate Medical Education and Research, Kolkata, West Bengal, India.
authors.forename: Dilip Kumar
authors.initials: DK
authors.lastname: Pal
keywords: Benign prostatic hyperplasia; bipolar; monopolar; transurethral resection of prostate