Fluid TherapyIsotonic SolutionsDisseminated Intravascular CoagulationColloidsRehydration SolutionsHyponatremiaPlasma SubstitutesHypovolemiaIntraoperative CarePerioperative CareBlood Volume DeterminationWater-Electrolyte BalanceColorectal SurgeryUltrasonography, InterventionalGoalsHydroxyethyl Starch DerivativesSodium ChloridePostoperative CarePostoperative ComplicationsHemodynamicsProspective StudiesTreatment OutcomeCoronary VesselsVascular NeoplasmsCoronary Artery DiseaseCoronary Angiography