Which method is considered secure for applying surface cup electrodes?

The method using collodion and compressed air is considered secure for applying surface cup electrodes because collodion provides a strong and reliable adhesive for attaching electrodes to the skin. Collodion creates a firm bond that can withstand movements and vibrations that may occur during surgical procedures. Moreover, it dries quickly, forming a solid yet flexible film that helps maintain the electrode position, ensuring good electrical contact during intraoperative monitoring.

Using compressed air in conjunction with collodion can aid in creating an even layer and enhancing the adhesion process by ensuring that the collodion is well-distributed before it sets. This technique is often used in clinical settings where stable electrode placement is critical for accurate neurophysiological monitoring.

Other methods, while they may have their advantages, do not provide the same level of security for electrode placement. For example, applying electrodes the day before surgery can lead to issues such as displacement or loss of adhesive integrity. A conductive paste and tape may offer good electrical connectivity but can be less stable during the dynamic environment of surgery. Water-resistant tape, while possibly useful for securing electrodes, may not provide the same level of adherence or longevity compared to collodion.