• Kristen Uhl, Anna Litvinova, Patcharee Sriswasdi, David Zurakowski, Deirdre Logan, and Joseph P Cravero.
• Department of Anesthesiology, Perioperative and Pain Medicine, Boston Children's Hospital, Boston, Massachusetts.
• Paediatr Anaesth. 2019 Jul 1; 29 (7): 721-729.

BackgroundResearch has improved practitioner awareness of the impact of individual characteristics on responses to painful procedures. However, there is little data relating preexisting temperament profiles and postsurgical/anesthesia outcomes in pediatric patients. In particular, it is not clear how best to identify which patients are at risk of poor postsurgical outcomes.AimIn this prospective study, we examined relationships between preoperative measures of child temperament and postoperative pain/behavioral outcomes of children undergoing tonsillectomy/adenoidectomy surgeries. We sought to determine which temperament profiles were predictive of poor outcomes.MethodsAfter IRB approval and informed consent, validated temperament surveys were administered to the parents of a cohort of children undergoing tonsillectomy/adenoidectomy surgery. These data were combined with preoperative, intraoperative, and postoperative outcome measures collected from the electronic medical record utilizing a large integrated anesthesia outcome database. The dataset was further augmented with surveys addressing remote postoperative behaviors. Analysis of the temperament data yielded four groups (positive, negative, excitable, and inhibitory). The probability of high perioperative pain, agitation, emesis, and postoperative behavior changes based on cluster membership was then assessed.ResultsA total of 260 patients undergoing tonsillectomy and/or adenoidectomy surgeries were enrolled in the study. ANOVA and chi-squared analyses indicated no statistically significant age, gender, or anesthesia technique differences across the four temperament clusters. Temperament cluster membership was not related to emesis, agitation, or behavioral changes. However, it was found to be predictive of high postoperative pain. Members of the excitable cluster (high positive and negative emotionality) were more likely to report high pain than those in positive cluster (high positive, low negative emotionality) (OR 7.97, 95% CI: 1.62-39.26; P < 0.05). Comparisons among other clusters were not significant.ConclusionOur data indicate that preoperative temperament characteristics may differentially influence pediatric postoperative pain experience in children. Specifically, children with high levels of positive and negative emotionality may exhibit more postsurgical pain behaviors.© 2019 John Wiley & Sons Ltd.

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