ABSTRACT
OBJECTIVES@#The waiting room for surgery is an area set up to improve the surgical turnover rate, but the waiting time for surgery is uncertain. Patients are prone to negative emotions that affect their physiological state during waiting time. This study aims to explore the effect of Mandala painting intervention based on Mandala-self theory on the emotion and physiological state of patients waiting before operation.@*METHODS@#The patients in the control group (@*RESULTS@#Diastolic pressure, heart rate, and happiness and excitement showed no statistical significance in the time effect, intervention effect, and interaction between the 2 factors (all @*CONCLUSIONS@#The application of Mandala painting in the operation waiting room is feasible and can effectively regulate the patients' negative mood and systolic pressure, as well as shorten the waiting time of perception.