1. Robot-assisted colectomies had equivalent clinical outcomes compared to laparoscopic approach, but had higher overall higher overall hospitalization costs
Evidence Rating Level: 3 (Average)
Study Rundown: The use of robotic surgery may address the technical challenges associated with laparoscopic surgery such as the loss of stereoscopic vision. To date, only single-institution, early outcomes studies have been performed for robotic-assisted colorectal surgeries. A retrospective review of a large, multi-centered US surgical outcomes database was conducted to compare the perioperative outcomes and costs of robotic-assisted (RC), laparoscopic (LC), and open colectomies in a large, multi-centered patient database.
The results of this study demonstrate no significant difference in the primary outcome of in-hospital mortality between RC and LC. Additionally, there was no significant difference in secondary outcomes such as overall complication rate, and routine discharge rate. Cost estimate analysis showed greater overall and per day hospitalization costs associated with RC. The strength of this study includes the use of the US-wide, multi-centered population database. However, the database only included a small sample size of RC may attribute to the lack of statistical significance. The study shows that there is currently no additional benefit of robot-assisted colorectal surgery compared to laparoscopic approach.
In-Depth [retrospective cohort]: This study reviewed perioperative colectomy outcomes using the US Healthcare Cost and Utilization Project Nationwide Inpatient Sample (NIS) from 2008-2010. During this time period, LC accounted for 47.6% of all colectomies and RC accounted for 0.6%. A propensity score method was used to compare the outcomes from 1500 LCs and 1584 RCs. There was no significant difference in in-hospital mortality (RC:0.0% LC:0.7%, p=0.12), complications (RC:14.7%, LC:18.5%, p=0.26), or rate of routine discharge (RC: 88.7%, LC:88.5%, p=0.98). Trends that favor RC were observed in median length of hospital stay and rate of conversion to open colectomy. Estimated overall costs were higher in for RC compared to LC (RC: $14,847, LC: $11,966, p<0.001), as well as adjusted for length of stay (RC: $3407, LC: $2617, p<0.001).
By David Wang and Andrew Bishara
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