Journal Article: Bilateral total extraperitoneal inguinal hernia repair (TEP) has outcomes similar to those for unilateral TEP: population-based analysis of prospective data of 6,505 patients Journal Category: Hernia Journal Sub-Category: Inguinal Article objective: Describe the outcomes of bilateral TEP vs standard unilateral TEP 1. The potential advantages of simultaneous inguinal hernia repair include: a. Quicker recovery b. Less operating time c. Shorter length of stay d. Patient convenience and economic saving. e. Less hernia recurrence In the article presented by Gass et al, the authors compared the outcome of simultaneous laparoscopic bilateral inguinal hernia repair to unilateral laparoscopic inguinal hernia repair. 2. Regarding intra-operative and immediate post-operative data, which of the following statements regarding laparoscopic bilateral TEPinguinal hernia repair compared to laparoscopic unilateral inguinal hernia repair is true?: a. Bilateral TEP is associated with an increased but not significant operating time. b. Bilateral TEP is associated with increased operating time, intraoperative complications, and post operative surgical complications. c. Bilateral TEP is associated with increased operating time, but less intraoperative and postoperative surgical complications. d. Bilateral TEP is associated with less operative time, intraoperative complications and postoperative surgical complications. e. Bilateral TEP has the same operative time, intraoperative and postoperative surgical complications. 3. Regarding post-operative outcomes, which of the following statements compares regarding laparoscopic bilateral inguinal hernia repair to laparoscopic unilateral inguinal hernia repair is true?: a. Bilateral TEP is associated with a higher conversion rate. b. Bilateral TEP is associated with similar length of stay, higher incidence of general postoperative complications and conversion rates. c. Bilateral TEP is associated with increased length of stay, higher incidence of general postoperative complications and conversions rates. d. Unilateral TEP is associated with less length of stay, general postoperative complications and conversion rates. e. Unilateral TEP is associated with similar hospital of stay, incidence of general postoperative complications and conversion rates. 4. Gass et al. examine the strengths and limitations of this study. Ultimately, the authors recognize which of the following to be true? a. The availability of long-term data strongly supports the conclusions of this article. b. Large sample size and prospectively collected data are an asset that this studies possesses over other similar studies.Retrospectively collected data used in this study was a benefit to overall study conclusion. c. The ability compare different types of hernia repairs was unique to this study.Sample size was considered small an potential problem. Answers with Explanations: 1. a. Quicker recovery There is no data to support that bilateral inguinal hernia repair results in quicker recovery compared to unilateral hernia repair. Many studies have shown that the recovery time is the same. b. Less operating time. The operating time is longer with bilateral inguinal hernia repair compared to unilateral hernia repair whether open or laparoscopically. c. Shorter hospital stay. The hospital stay is the same with bilateral inguinal hernia repair compared to unilateral inguinal repair. d. Patient convenience and economic saving. The main advantages of bilateral inguinal hernia repair include patient convenience and economic aspects because only one admission, one anesthesia, and one period of convalescence are required. e. Less hernia recurrence. Data have shown that the hernia recurrence is the same with bilateral compared to unilateral repair repair. 2. Regarding intra-operative and immediate post-operative data, which of the following statements regarding laparoscopic bilateral TEPinguinal hernia repair compared to laparoscopic unilateral inguinal hernia repair is true?: a. Bilateral TEP is associated with an increased but not significant operating time. Laparoscopic bilateral inguinal hernia repair is associated with a significant increase in the operating time. b. Bilateral TEP is associated with increased operating time, intraoperative complications, and post operative surgical complications. c. The duration of surgery was longer for the patients undergoing bilateral inguinal hernia repair (86 minutes) than for those undergoing unilateral TEP (67 minutes) (p<0.001) Patients undergoing bilateral TEP repair had slightly increased rates for intraoperative complications (bilateral, 3.1% vs. unilateral, 1.9%; p = 0.002) and surgical postoperative complications (bilateral 3.2% vs. unilateral, 2.3%; p =0.026).Bilateral TEP is associated with increased operating time, but less intraoperative and postoperative surgical complications. Laparoscopic bilateral TEP is associated with increased operating time, intraoperative and postoperative surgical complications compared to unilateral TEP. d. Bilateral TEP is associated with less operative time, intraoperative complications and postoperative surgical complications. Laparoscopic bilateral TEP is associated with increased operating time, intraoperative and postoperative surgical complications compared to unilateral TEP. e. Bilateral TEP has the same operative time, intraoperative and postoperative surgical complications. Laparoscopic bilateral TEP is associated with increased operating time, intraoperative and postoperative surgical complications compared to unilateral TEP. 3. a. Bilateral TEP is associated with a higher conversion rate. The conversion rate is similar between bilateral TEP and unilateral TEP (1.1% vs. 1.0%; p =0.699) b. Bilateral TEP is associated with similar length of stay, higher incidence of general postoperative complications and conversion rates. No significant difference between bilateral TEP and unilateral TEP groups were observed in terms of length of stay (2.5 vs.2.3 days; p=0.196), general postoperative complications (1.0 vs. 0.7%; p= 0.151 or conversion rates (1.1% vs. 1.0%; p =0.699) c. Bilateral TEP is associated with increased length of stay, higher incidence of general postoperative complications and conversions rates. No significant difference between bilateral TEP and unilateral TEP groups were observed in terms of length of stay (2.5 vs.2.3 days; p=0.196), general postoperative complications (1.0 vs. 0.7%; p= 0.151 or conversion rates (1.1% vs. 1.0%; p =0.699) d. Unilateral TEP is associated with less length of stay, general postoperative complications and conversion rates. No significant difference between bilateral TEP and unilateral TEP groups were observed in terms of length of stay (2.5 vs.2.3 days; p=0.196), general postoperative complications (1.0 vs. 0.7%; p= 0.151 or conversion rates (1.1% vs. 1.0%; p =0.699 e. Unilateral TEP is associated with similar hospital of stay, incidence of general postoperative complications and conversion rates. No significant difference between bilateral TEP and unilateral TEP groups were observed in terms of length of stay (2.5 vs.2.3 days; p=0.196), general postoperative complications (1.0 vs. 0.7%; p= 0.151 or conversion rates (1.1% vs. 1.0%; p =0.699 4. a. The availability of long-term data strongly supports the conclusions of this article. No long-term data is available for the current study. b. Large sample size and prospectively collected data are an asset that this studies possesses over other similar studies. The strength of the current study include the large sample size conferred a high degree of statistical power for detecting clinically relevant significance, and the prospectively collected data. c. Retrospectively collected data used in this study was a benefit to overall study conclusion. The data was collected prospectively. d. The ability compare different types of hernia repairs was unique to this study. The data was comparing one type of inguinal hernia repair; bilateral and unilateral TEP repair. e. Sample size was considered small an potential problem. The data was comparing one type of inguinal hernia repair; bilateral and unilateral TEP repair. References 1. Pfeffer F, Riediger H, Küfner Lein R, Hopt UT Repair of Bilateral Inguinal Hernias - Sequential or Simultaneous? Zentralbl Chir 2008; 133(5): 446-451. 2. Lau H, Patil NG, Yuen WK. A comparative outcome analysis of bilateral versus unilateral endoscopic extraperitoneal inguinal hernioplastics. J Laparoendossc Adv Surg Tech A. 2003 Jun;13(3):153-7. 3. Ahmad SA, Schuricht AL. A comparison of patient recovery following unilateral and bilateral endoscopic preperitoneal herniorrhaphy. JSLS, 1997; 1: 231-235. 4. Guller U, DeLong ER. Interpreting statistics in medical literature: a vade mecum for surgeons. J Am Coll Surg 2004; 198: 441-458.