Efficacy of the Spontaneous Laughter on Postoperative Pain and Anxiety in Children. A Randomized Controlled Trial

The therapeutic efficacy of laughter is supported in several research which have shown to have preventive and therapeutic effects that contribute to a better quality of life. In addition, laughter can optimize strategies to increase pain tolerance and combat stress, reducing the negative impact such as increased blood pressure, decreases simultaneously perfusion of organs not needed for the motor function, increased metabolism rates cell with increased serum cortisol and increased risk of infections. Nevertheless the upswing in research on these effects, there is still a necessity to have evidence-based medicine as most of the available studies are limited by various problems such as lack of objectivity in the assessment and measurement, distinction between laughter and mood, establishment dosing therapies (frequency and time).

The aim of our study is to determine the efficacy of spontaneous laughter in children to improve postoperative pain, anxiety and length of hospital stay.

Methods: A controlled, randomized, open label trial with an experimental group exposed to the conventional pain treatment with laughter therapy; 2 control group, a group with accompaniment without causing the laughter of children to control the effect of a companion instead of the clown and a conventional treatment group to contrast with experimental group.