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Objective: Fluid resuscitation is necessary in almost all critical patients. The central venous pressure (CVP) is a well-established method of assessing resuscitation. Recently, there have been attempts to investigate less invasive methods like the diameters of inferior vena cava (IVC) or the jugular vein. We aimed to investigate this method in our research.Methods: Seventy eight critical patients admitted to the emergency department from April 2018 to December 2018 were studied. The CVP was measured along with the diameters of the two mentioned veins before and during resuscitation. The urinary output was also recorded after administering the fluid. The minimum p-value that would illustrate a significant association was equal to 0.05.Results: Findings showed that 53.8% of patients were males and 46.2% were females with an average age of 71.48 years. The causes of the critical state were 25.6% hemorrhagic shocks, 30.8% septic shocks and 43.6% hypovolemic shocks. The mean diameter of the jugular vein before and during resuscitation was 27.21 mm and 25.38 mm, respectively (P = 0.1). The mean of IVC diameter before and during resuscitation was 63.33 mm and 57.98 mm, respectively (P <0.001). The CVP was 4.23 mmHg before resuscitation and 5.61 mmHg after resuscitation (P <0.001). With an average urine output of 201.28 cc, a significant correlation was observed with the increase in the CVP, while no such correlations were observed with the decreasing state of the diameters of the IVC or the jugular vein.Conclusion: Both the IVC diameter and the jugular vein diameter are unable to assess fluid resuscitation independently from respiratory factors

The efficacy of inferior vena cava diameters and the jugular vein in assessing fluid resuscitation