4.4 Article

Learning curve for minimal invasive cytoreductive surgery and hyperthermic intraperitoneal chemotherapy (HIPEC) procedures

Journal

LANGENBECKS ARCHIVES OF SURGERY
Volume 408, Issue 1, Pages -

Publisher

SPRINGER
DOI: 10.1007/s00423-023-02882-9

Keywords

Peritonectomy; Peritoneal carcinomatosis; Cytoreductive surgery; HIPEC; Laparoscopy; Learning curve

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This study aimed to evaluate the learning curve of L-CRS + HIPEC and its impact on perioperative outcomes. The learning curve was divided into a learning phase and a consolidation phase, which could be achieved after 14 procedures. There was a significant decrease in operative time with no differences in complexity, number of procedures, or morbidity.
Purpose The benefits of the minimally invasive approach for performing cytoreductive surgery plus hyperthermic intraperitoneal chemotherapy (L-CRS + HIPEC) have been described previously, associating an early recovery with similar oncologic outcomes in patients with limited peritoneal carcinomatosis. Currently, no studies are focusing on the learning curve for this emerging procedure. This study aimed to evaluate the L-CRS + HIPEC learning curve and its knock-on effect on the perioperative outcomes. Methods We identified all consecutive unselected patients who underwent L-CRS + HIPEC by a single surgeon between April 2016 and January 2022 (n = 51). Patients who underwent risk-reducing CRS + HIPEC (PCI = 0) or initial conversion due to an intraoperative PCI > 10 were excluded from the final analysis. To evaluate the learning curve, perioperative data were analysed using the cumulative sum (CUSUM) analysis. Results Twenty-six patients were included in the final analysis. Major morbidity occurred in one patient (3.8%). The difficulty of the L-CRS + HIPEC procedures was categorised as low in 23.1% (n = 6), intermediate in 19.2% (n = 5), and advanced in 57.7% (n = 15). The mean length of hospital stay was 5.4 +/- 1.5 days. No patient had a conversion to open surgery. The learning curve was divided into two distinct phases: the learning phase (1-14) and the consolidation phase (15-26). A significant decrease in the operative time (375 +/- 103.1 vs 239.2 +/- 63.6 min) was observed with no differences in complexity, the number of peritonectomy procedures, or morbidity. Conclusion L-CRS + HIPEC is a complex procedure that must be performed in a high-volume and experienced oncologic unit, requiring a learning curve to achieve the consolidation condition, which could be established after 14 procedures.

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