Fluid TherapyIsotonic SolutionsHypodermoclysisPlasma SubstitutesHydroxyethyl Starch DerivativesInfusions, IntravenousResuscitationPostoperative ComplicationsHemodynamicsProspective StudiesTreatment OutcomeAdministration, OralDrug Administration ScheduleInjections, IntravenousUnited States Food and Drug AdministrationDrug Administration RoutesDose-Response Relationship, DrugRats, Sprague-DawleyTime FactorsAdministration, Intranasal