This clinical project focuses on hemodynamic evaluation and the observation of fluid responsiveness. The primary conditions examined in the study are hemodynamics and fluid responsiveness. As part of the research, a procedure centered around respiratory maneuvers was utilized as an intervention. Specifically, the applied method was a respiratory maneuvers and fluid responsiveness assessment protocol. The official sponsor of this study was University Hospital Pilsen. The study currently holds the status of being completed. The record does not report any specific numerical statistics or the total number of enrolled participants.