Results of a randomized trial of HERMES-assisted versus non-HERMES-assisted laparoscopic antireflux surgery

Surg Endosc. 2002 Sep;16(9):1264-6. doi: 10.1007/s00464-001-8222-7. Epub 2002 Jun 14.


Background: Speech recognition technology is a recent development in minimally invasive surgery. This study was designed to assess the impact of HERMES on operating room efficiency and user satisfaction.

Methods: Patients undergoing laparoscopic antireflux operations by surgeons experienced in minimally invasive surgery were randomized to HERMES-assisted or standard laparoscopic operations. The variables of interest were circulating nurse's time spent adjusting devices that are voice-controlled by HERMES, number of adjustments to devices requested, and surgeon and nurse satisfaction measured on a scale from 1 (dissatisfied) to 10 (satisfied).

Results: A total of 30 cases were studied. In the non-HERMES cases, nurses were interrupted to make device adjustments an average of 15.3 times per case versus 0.33 times per case in the with-HERMES cases (p < 0.01). The interruptions during the non-HERMES cases averaged 4.35 min per case versus 0.16 min per case in the with-HERMES cases (p = 0.03). Average satisfaction scores for HERMES operations as opposed to non-HERMES operations were 9.2 versus 5.3 for nurses (p < 0.01) and 9.0 versus 5.1 for surgeons (p < 0.01).

Conclusions: Physician and nurse acceptance of HERMES was very high because of the smoother interruption-free environment.

Publication types

  • Clinical Trial
  • Comparative Study
  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Fundoplication / instrumentation
  • Fundoplication / methods
  • Fundoplication / nursing
  • Gastroesophageal Reflux / surgery*
  • Humans
  • Job Satisfaction
  • Laparoscopy / methods*
  • Laparoscopy / nursing
  • Robotics / methods
  • Software
  • Surgery, Computer-Assisted / methods
  • Time Factors
  • User-Computer Interface*
  • Voice