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Can Urol Assoc J. 2010 Aug;4(4):250-4. doi: 10.5489/cuaj.09083.

Impact of body mass index on perioperative outcomes during the learning curve for robot-assisted radical prostatectomy.

Canadian Urological Association journal = Journal de l'Association des urologues du Canada

Venu Chalasani, Carlos H Martinez, Darwin Lim, Reem Al Bareeq, Geoffrey R Wignall, Larry Stitt, Stephen E Pautler

Affiliations

  1. Divisions of Urology and Surgical Oncology, Departments of Surgery and Oncology, University of Western Ontario, London, ON.

PMID: 20694101 PMCID: PMC2910769 DOI: 10.5489/cuaj.09083

Abstract

INTRODUCTION: Previous studies of robotic-assisted radical prostatectomy (RARP) have suggested that obesity is a risk factor for worse perioperative outcomes. We evaluated whether body mass index (BMI) adversely affected perioperative outcomes.

METHODS: A prospective database of 153 RARP (single surgeon) was analyzed. Obesity was defined as BMI >/= 30 kg/m(2); normal BMI < 25 kg/m(2); and overweight as 25 to 30 kg/m(2). Two separate analyses were performed: the first 50 cases (the initial learning curve) and the entire cohort of 153 RARP.

RESULTS: In the initial cohort of 50 cases (14 obese patients), there was no statistically significant difference with regards to operative times, port-placement times and estimated blood loss (EBL). Length of stay (LOS) was longer in the obese group (4.3 vs. 2.9 days); BMI remained an independent predictor of increased LOS on multivariate linear regression analysis (p = 0.002). There was no statistically significant difference in the postoperative outcomes of leak rates, margin rates and incisional herniae. In the entire cohort, when comparing obese patients to those with a normal BMI, there was no statistically significant difference in operative times, EBL, LOS, or immediate postoperative outcomes. However, on multivariate linear regression analysis, BMI was an independent predictor of increased operative time (p = 0.007).

CONCLUSION: Obese patients do not have an increased risk of blood loss, positive margins or the postoperative complications of incisional hernia and leak during the learning curve. They do, however, have slightly longer operative times; we also noted an increased LOS in our first 50 cases.

References

  1. BMC Public Health. 2008 Jun 05;8:200 - PubMed
  2. Urology. 2006 Apr;67(4):774-9 - PubMed
  3. BJU Int. 2006 Dec;98(6):1275-8; discussion 1278 - PubMed
  4. N Engl J Med. 2006 Aug 24;355(8):763-78 - PubMed
  5. Atherosclerosis. 2008 Feb;196(2):943-52 - PubMed
  6. Can J Urol. 2006 Aug;13(4):3169-73 - PubMed
  7. J Urol. 2003 Nov;170(5):1738-41 - PubMed
  8. JSLS. 2007 Oct-Dec;11(4):438-42 - PubMed
  9. Anticancer Res. 2008 Jul-Aug;28(4A):1989-92 - PubMed
  10. J Urol. 2005 Jul;174(1):269-72 - PubMed
  11. J Urol. 2008 Jun;179(6):2212-6; discussion 2216-7 - PubMed
  12. Can Urol Assoc J. 2010 Feb;4(1):13-25 - PubMed
  13. World J Urol. 2008 Feb;26(1):91-5 - PubMed
  14. J Endourol. 2008 Jul;22(7):1471-6 - PubMed
  15. MMWR Morb Mortal Wkly Rep. 2008 Jul 18;57(28):765-8 - PubMed
  16. Ann Hum Biol. 2008 Sep-Oct;35(5):547-55 - PubMed
  17. Urology. 2005 Apr;65(4):740-4 - PubMed
  18. Urology. 2009 Feb;73(2):316-22 - PubMed
  19. Can Urol Assoc J. 2007 Jun;1(2):97-101 - PubMed
  20. J Epidemiol Community Health. 2009 Feb;63(2):140-6 - PubMed

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