Alternative agents to prevent fogging in head and neck endoscopy

Clear imaging is vital in head and neck endoscopy for accurate diagnosis and treatment. Fogging of endoscope lenses can obstruct visibility. Prior research has shown that surface tension plays a role in water condensation, which leads to fogging. No prior work had resolved whether non-commercial agents like hibiscrub(®) or baby shampoo could serve as effective anti-fogging alternatives. This gap motivated the investigation of these agents' potential. Existing commercial solutions are available but may be costly or not widely accessible. That uncertainty drove the need to evaluate alternative, cost-effective agents. This paper's contribution is the first reported comparison of hibiscrub(®) and baby shampoo with commercial anti-fogging agents in this context. The study aimed to address a practical need in clinical settings where fogging remains a persistent issue.

The study aimed to evaluate the effectiveness of hibiscrub(®) and baby shampoo as anti-fogging agents in head and neck endoscopy. The specific problem addressed is the lack of available data on non-commercial agents for fog prevention. The motivation stems from the need for affordable and accessible alternatives to commercial products. The researchers propose that these agents could offer comparable benefits. The study's goal was to compare these agents with a commercial anti-fogging solution. The primary outcome was the difference in image quality ratings across the tested agents. The study sought to determine whether either non-commercial agent could serve as a viable alternative. This investigation responds to a practical challenge in clinical endoscopy procedures.

The study involved a controlled comparison of three agents: a commercial anti-fogging solution, hibiscrub(®), and baby shampoo. Rigid endoscope lenses were treated with each agent before being placed in a mist generator. Image quality was assessed at four time points: baseline, 15 seconds, 30 seconds, and 1 minute. Two independent evaluators rated the images using a visual analogue scale (VAS) from 0 to 10. The images were anonymized to ensure unbiased evaluation. The study was conducted in a single department of otorhinolaryngology. No blinding of participants was mentioned in the abstract. The primary metric was the mean VAS score difference between each agent and the control group.

The commercial anti-fogging agent produced a mean VAS score of 5.46, significantly higher than the control group. Baby shampoo had a mean score of 4.45, also significantly better than no agent. Hibiscrub(®) showed a mean score of 2.1, which was not significantly different from the control. The commercial agent and baby shampoo both outperformed the control (P = 0.05). The difference between the commercial agent and baby shampoo was not statistically significant. The study found that baby shampoo provided effective anti-fogging benefits. The lowest scores were observed in the control group and hibiscrub(®) group. These results suggest that non-commercial agents can offer practical alternatives.

The authors propose that baby shampoo is an effective agent for preventing fogging in head and neck endoscopy. They suggest that it performs comparably to commercial anti-fogging agents. The findings indicate that hibiscrub(®) does not provide significant anti-fogging benefits. The study supports the use of baby shampoo as a viable alternative in clinical settings. The commercial agent and baby shampoo both showed significant improvement over the control. The authors do not claim that these agents are essential for all procedures. The results are limited to the specific agents and conditions tested. The authors do not propose future directions or broader implications.