(HealthDay)—A short hypnosis session performed in the operating room prior to major surgery does not improve postoperative anxiety and pain levels among pediatric patients, according to a study published online April 12 in the Journal of Clinical Nursing.

Nathalie Duparc-Alegria, from the Hôpital Robert-Debré in Paris, and colleagues assessed the impact of a short hypnotic session on postoperative anxiety and pain among 120 children (aged 10 to 18 years) undergoing major orthopedic surgery.

The researchers observed no difference between patients' anxiety scores in the control group and the hypnosis group 24 hours after surgery (P = 0.17). Both groups experienced a significant decrease in between the day before surgery and the day after surgery (P < 0.0001 in each group). The postoperative pain scores were low and similar in both groups (P = 0.57).

"The decrease in anxiety and pain levels may be due to the addition of nurse preoperative interviews and optimization in communication in the ," the authors write.