Vibration Analgesia in Propofol Infusion During Anesthesia Induction

Background and Significance Infusion of propofol during the process of inducing anesthesia can cause a fair amount of transient discomfort to patients while the are on the operating table and of intact faculties. It is not uncommon for patients to cry out in pain. The investigators have noticed this first hand on numerous occasions and have wondered if there is a risk-free way to lesson the pain associated with propofol infusion.

This study will focus on the use of vibration analgesia to potentially reduce the pain associated with propofol infusion. Vibration is proposed to stimulate A-beta nerve fibers, which transmit information from vibration and touch which, according to the Gate Control Theory of Pain (Melzack and Wall 1965), inhibits signal transduction by A-delta and C fibers (Kakigi and Shibasaki 1992). Vibration has been demonstrated to be effective to decrease pain during vaccinations, phlebotomy, and dental anesthesia (Baxter et al. 2011; Nanitsos et al. 2009).

In this study, the investigators seek to evaluate the role of vibration in the reduction of discomfort associated with painful stimulus associated with anesthesia induction. Through this study, the investigators hope to develop a comprehensive and cost-effective approach to minimize patient discomfort during anesthesia induction.

Study Design

The objective of this study is to evaluate the effectiveness of vibration as a analgesic during induction of anesthesia. It is the investigators hypothesis that both vibration will lessen the pain of propofol infusion.