How does visceral obesity affect surgical performance in laparoscopic radical nephrectomy?

Area of Science:

• Urology
• Surgical Oncology
• Minimally Invasive Surgery

Background:

• Operating time in laparoscopic surgery is influenced by surgeon experience and patient factors like obesity.
• Visceral obesity, characterized by excess abdominal fat, presents unique challenges in laparoscopic procedures.
• Previous research highlighted a link between operating time and obesity in general laparoscopic surgery.

Purpose of the Study:

• To investigate the impact of surgeon experience on operating time during laparoscopic radical nephrectomy in patients with visceral obesity.
• To determine if surgeon expertise mitigates the effect of visceral obesity on operative duration.

Main Methods:

• Retrospective analysis of 167 laparoscopic radical nephrectomies performed between 2006 and 2012.
• Surgeons categorized as 'expert' (≥50 cases/year) or 'non-expert'.
• Visceral fat area (≥100 cm²) assessed via CT scan; multivariate analysis used to identify risk factors for prolonged operating time.

Main Results:

• Expert surgeons had shorter median operating times (167.0 min) compared to non-experts (227.5 min).
• Visceral obesity significantly prolonged operating time for all surgeons.
• For non-expert surgeons, visceral obesity and clinical T stage were independent risk factors for longer operating times; for experts, only clinical T stage was significant.

Conclusions:

• Visceral obesity is a significant factor contributing to prolonged operating times in laparoscopic radical nephrectomy.
• The negative impact of visceral obesity on operating time is more pronounced in non-expert surgeons compared to experienced surgeons.