Robotic cholecystectomy for acute cholecystitis: more bailouts, same bile duct injury, higher cost

Design

Retrospective cohort from state administrative databases, multilevel regression

Population

384,617 adults with unscheduled cholecystectomy for acute cholecystitis, New York and Florida, 2012–2021

Primary outcome

Bailout procedure (conversion, subtotal cholecystectomy or cholecystostomy)

Effect

1.7% robotic vs 1.4% laparoscopic; adjusted OR 1.38 (95% CI 1.21–1.58); bile duct injury 1.6% in both

Using state databases from New York and Florida between 2012 and 2021, researchers compared 384,617 adults who had unscheduled inpatient cholecystectomy for acute cholecystitis; 4% were robotic. Bailout was defined as conversion to open, subtotal cholecystectomy or cholecystostomy tube.

Robotic surgery was associated with slightly more bailouts (1.7% vs 1.4%; adjusted OR 1.38, 95% CI 1.21–1.58), including more conversions and twice the odds of subtotal cholecystectomy, but fewer cholecystostomy tubes (OR 0.42). Bile duct injury was 1.6% in both. Among the 5,448 patients who needed a bailout, those operated robotically had fewer later endoscopic biliary procedures (3.1% vs 7.7%) and reoperations (2.3% vs 7.5%). Median one-year costs were higher with robotic surgery ($29,702 vs $24,483).

This is administrative data and cannot account for why a surgeon chose the robot. The higher subtotal rate may reflect willingness to bail out rather than greater difficulty. For most Indian units the cost difference is decisive: the data give no safety reason to prefer the robot for acute cholecystitis.

• Do not expect a robotic approach to lower bile duct injury in acute cholecystitis; rates were identical.
• Count robotic cases' higher one-year costs when planning emergency gallbladder services.
• Track subtotal cholecystectomy and conversion rates in your own audit, by approach.
• Plan follow-up for bailout patients, who often need further biliary procedures.

Why it matters

It answers whether the robot earns its cost in the hardest gallbladders.

Don't overread it

The lower downstream intervention rate after robotic bailout is observational and may reflect case selection.

The statistics, in plain English

With nearly 400,000 patients, even a 0.3-point difference in bailout becomes statistically significant; in absolute terms it is about three extra bailouts per 1,000 operations. The identical 1.6% bile duct injury rate is the more clinically important finding.

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