The senior author, Zeev Kain, M.D., professor in the Department of Anesthesiology, said previous studies have shown that music decreases intraoperative sedative requirements in patients undergoing surgical procedures under anesthesia. He wanted to know if the decrease resulted from listening to music or eliminating operating room noise
The study included 36 patients at Yale-New Haven Hospital and 54 patients at the American University of Beirut Medical Center. The subjects wore headphones and were randomly assigned to hear music they liked, white noise or to wear no headphones and be exposed to operating room noise. Dropping a surgical instrument into a bowl in the operating room can produce noise levels of up to 80 decibels, which is considered very loud to uncomfortably loud.
What they found is that blocking the sounds of the operating room with white noise did not decrease sedative requirements of listening to operating room sounds. Playing music did reduce the need for sedatives during surgery.
"Doctors and patients should both note that music can be used to supplement sedation in the operating room," Kain said.
The lead author was Chakib Ayoub,M.D., with co-authors Laudi Rizk, M.D., Chadi Yaacoub, M.D., and Dorothy Gaal, M.D., of the University of Beirut Medical Center. The study was supported in part of National Institutes of Health grants.
Anesthesia & Analgesia 100: pp 1316-1319 (May 2005)