Effect of pre-surgical body mass index on surgical safety after laparoscopic surgery for apparent early stage endometrial cancer (2897)
Objective: To compare surgical safety and quality of life (QoL) among women with a lower (<30) versus higher (>=30) body mass index (BMI), who received a total laparoscopic hysterectomy (TLH) for apparent early stage endometrial cancer.
Methods: Between October 2005 and June 2010, 760 women were enrolled in a multi-centre, randomized clinical trial (LACE) comparing outcomes following TLH or total abdominal hysterectomy. Here we use data from the TLH arm only (n=404), and compare adverse events (AE), hospital length of stay (LoS), conversion from laparoscopy to laparotomy, and QoL measured by EQ-5D. Postoperative AEs were graded according to Common Toxicity Criteria (CTC) v3, and those grade >=3 are reported here.
Results: While there was no difference in intraoperative AEs, or post-operative LoS between the two groups, the relative risk of at least one post-operative AE CTC Grade 3+ was significantly higher for women with BMI>=30, compared to leaner women (BMI 30>= 15.6% vs BMI<30 6.2%; RR = 2.49, 95% CI 1.24 – 5.0, p=0.01). Mean operating time was on average 9 minutes longer for women with BMI 30>= (95% CI 1.0 – 17.3, p=0.03). Of the 21 women who required a conversion from TLH to TAH, 16 (76%) had a BMI of >=30. At four weeks post-surgery a significantly greater proportion of women in the higher BMI group still reported problems with mobility (4.8%) and self-care (22.2%; p<0.05) compared to patients with in the lower BMI group (0% and 12.8%, respectively; p<0.05). Long term quality of life did not differ significantly between groups.
Conclusions: Compared to patients with a BMI of <30, women with higher BMI who present for hysterectomy have a significantly greater risk of post-operative adverse events, even if they are treated with minimally invasive surgery. These data can be used to inform patients about their increased risk. In addition, non-surgical treatment alternatives need to be investigated for patients at greatly increased surgical risk.
This work is conducted in dedication to the late Anthony McCartney