Korean J Anesthesiol 2019 October 72(5): 429-440https://doi.org/10.4097/kja.19305The article by Lee et al. entitled, “Fluid responsiveness in the pediatric population” (Korean J Anesthesiol 2019 Oct; 72(5): 429-440) contained an error in Fig. 2.In the Figure,PPV = (PPmax+PPmin)/(PPmax+PPmin)/2SPV = (SPmax+SPmin)/(SPmax+SPmin)/2should be corrected toPPV = (PPmax-PPmin)/(PPmax+PPmin)/2SPV = (SPmax-SPmin)/(SPmax+SPmin)/2The authors sincerely apologize for this error and the revised figure is shown below.