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Blood Volume clinical trials

View clinical trials related to Blood Volume.

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NCT ID: NCT05874531 Completed - Ultrasonography Clinical Trials

End-expiratory Occlusion Test and Prediction of Preload Dependence

Start date: May 15, 2023
Phase:
Study type: Observational

Three sets of measurements of hemodynamic parameters and sub-aortic VTI were performed: before and at the end of 15 seconds end-expiratory occlusion and after 250 mL saline administration over 10 minutes. Patients were considered responders to fluid loading after an increase in sub-aortic VTI of more than 10% following a volume expansion. SPSS was used for statistic study. A p < 0.05 was considered significant. The investigators performed univariate and then multivariate analysis.

NCT ID: NCT03890510 Completed - Clinical trials for Intraocular Pressure

The Effect of High vs. Low Fluid Volume on Ocular Parameters in Prone Spine Surgery

Start date: May 1, 2019
Phase: N/A
Study type: Interventional

The purpose of this trial is to compare the effect of different fluid volume infusion on ocular parameters in patients undergoing spine surgery in prone position.

NCT ID: NCT01195025 Completed - Blood Coagulation Clinical Trials

Volume Kinetics for Starch Solution and Acetated Ringers

Start date: August 2010
Phase: N/A
Study type: Interventional

Volume kinetics is a method mostly used, so far, to study the distribution and elimination of crystalloid solutions. Voluven (in Sweden the most commonly used colloid for replacement of bleeding during surgery) is poorly studied, though. Also, a recent study showed unexpected volume kinetics for a crystalloid solution when it was given after a colloid solution. The investigators aim to study the volume kinetics of crystalloids and colloids and also the combination of the two in more detail. The investigators will also compare the invasive hemoglobin measurements with measurements from a new non-invasive tool (Radical 7, from Masimo Inc.) which could help to make volume kinetics more practical for everyday use. Finally the investigators will also study the concentrations of a few coagulation factors to see if they can explain the variations in coagulability that has been described in earlier studies of infusion solutions.