Obesity has become an increasingly important medical problem in children and adolescents. Many of the outcomes associated with obesity that were previously thought of as diseases of adults are now affecting children as well. Outcomes related to childhood obesity include hypertension, type 2 diabetes mellitus, dyslipidemia, left ventricular hypertrophy, nonalcoholic steatohepatitis, obstructive sleep apnea, and orthopedic problems (such as slipped capital-femoral epiphysis), as well as social and psychological problems. Very few investigators have explored the role of central adiposity in predicting perioperative complications. We have previously shown that central adiposity (indicated by neck circumference NC]) is associated with increased risk of perioperative respiratory adverse events in children