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Laparoscopic lens fogging: solving a common surgical problem in standard and robotic laparoscopes via a scientific model

Abstract

Background

Laparoscopic lens fogging (LLF) hampers vision and impedes operative efficiency. Attempts to reduce LLF have led to the development of various anti-fogging fluids and warming devices. Limited literature exists directly comparing these techniques. We constructed a model peritoneum to simulate LLF and to compare the efficacy of various anti-fogging techniques.

Materials and methods

Intraperitoneal space was simulated using a suction bag suspended within an 8 L container of water. LLF was induced by varying the temperature and humidity within the model peritoneum. Various anti-fogging techniques were assessed including scope warmers, FREDTM, ResoclearTM, chlorhexidine, betadine and immersion in heated saline. These products were trialled with and without the use of a disposable scope warmer. Vision scores were evaluated by the same investigator for all tests and rated according to a predetermined scale. Fogging was assessed for each product or technique 30 times and a mean vision rating was recorded.

Results

All products tested imparted some benefit, but FREDTM performed better than all other techniques. Betadine and ResoclearTM performed no better than the use of a scope warmer alone. Immersion in saline prior to insertion resulted in decreased vision ratings. The robotic scope did not result in LLF within the model.

Conclusions

In standard laparoscopes, the most superior preventative measure was FREDTM utilised on a pre-warmed scope. Despite improvements in LLF with other products FREDTM was better than all other techniques. The robotic laparoscope performed superiorly regarding LLF compared to standard laparoscope.

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Funding

No funding was received to conduct this research. The manuscript has been seen and approved by all authors.

Author information

Correspondence to Todd G. Manning or Nathan Lawrentschuk.

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Disclosures

The authors Dr. Todd G Manning, Dr. Nathan Papa, Dr. Marlon Perera, Dr. Shannon McGrath, Dr. Daniel Christidis, Dr. Munad Khan, Mr. Richard O’Beirne, Dr. Nicholas Campbell, Prof. Damien Bolton and A/Prof. Nathan Lawrentschuk have no conflicts of interest or financial ties to disclose.

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Manning, T.G., Papa, N., Perera, M. et al. Laparoscopic lens fogging: solving a common surgical problem in standard and robotic laparoscopes via a scientific model. Surg Endosc 32, 1600–1606 (2018). https://doi.org/10.1007/s00464-017-5772-x

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Keywords

  • Surgery
  • Laparoscopic surgery
  • Fogging
  • Laparoscopic lens fogging
  • Robotic surgery
  • Laparoscopic equipment