Contact surface area and its association with outcomes in robotic‐assisted partial nephrectomy. Issue 1 (14th January 2020)

• Record Type: Journal Article
• Authors: Kahn, Amanda E.; Shumate, Ashley M.; Galler, Isabella J.; Ball, Colleen T.; Thiel, David D.
• Is Part Of: International journal of medical robotics and computer assisted surgery. Volume 16:Issue 1(2020)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-01-14
• Subjects: contact‐surface area -- outcomes -- renal lesion -- renal nephrometry scores -- robotic‐assisted partial nephrectomy; Robotics in medicine -- Periodicals; Surgery -- Technological innovations -- Periodicals; Imaging systems in medicine -- Periodicals; 617.90285
• DOI: 10.1002/rcs.2069
• Languages: English
• ISSNs: 1478-5951

Abstract

Abstract: Background: Renal tumor scoring systems, such as the contact surface area value, aim to assist in predicting outcomes following robotic‐assisted partial nephrectomy. The aim of this study is to identify associations between specific postoperative outcomes and the contact surface area of renal masses. Methods: We analyzed 332 consecutive robotic‐assisted partial nephrectomies and calculated contact surface area for renal tumors with the contact surface area formula (CSA = 2πrd), where π ≈ 3.14, r = greatest tumor radius (cm), and d = greatest tumor depth (cm). Results: Higher contact surface area was associated with longer warm ischemia time ( P < .001), higher estimated blood loss ( P < .001), and longer length of hospital stay (LOS) ( P < .001). Higher contact surface area was significantly associated with decreased renal function at 1 day, 1 month, and 6 months following robotic‐assisted partial nephrectomy. Conclusions: Contact surface area is associated with certain outcomes following robotic‐assisted partial nephrectomy and may be a useful predictive tool.