Authors: Mohamed Ahmed Hamed, Maged Labib Boules, Mohamed Ibrahim Kamalelden Mahmoud, Rana Ahmed Abdelghaffar.
Background: There is a correlation between CVP and the femoral vein diameter. Therefore, we assessed the accuracy of the measurement using pulse pressure variation in patients on mechanical ventilation by measuring the ratio of femoral vein diameter to femoral artery diameter.
Methods: We enrolled 60 patients with circulatory failure who were on mechanical ventilation (MV) in our clinical research.
Two groups of patients were randomly assigned: Group (P): Thirty patients were placed on fully regulated mechanical ventilation, momentarily drugged, and paralyzed. At baseline, PPV is computed directly on Nihon Kohden monitors. Group (F): (n = 30), FVD/FAD ratio guided;The FVD/FAD ratio in our target group (F) was evaluated at baseline, The main outcome was the variation in MAP (mm Hg) following a three-hour infusion of liquids.
Results: There was a statistically significant difference in mean arterial pressure (MAP) between before and after the patients received their fluids. MAP was 57.13 ± 2.46 before receiving the fluids, but it increased by an average of 20.60, p-value<0.001. Similarly, there was a statistically significant difference in the FVD/FAD ratio before and after the patients received their fluids. The mean FVD/FAD ratio was 0.91 ± 0.13 before receiving the fluids, but after the patients received their fluids, the mean FVD/FAD ratio was 1.27 ± 0.16 after receiving the fluids.
Conclusion: The FVA/FAD ratio is a good indicator to assess the volume status of the patient who received fluids for resuscitation but should be confirmed by other parameters in hypovolemic-pre-resuscitated patients.
Highlights
• Assessement the accuracy of the measurement using pulse pressure variation in patients on mechanical ventilation
• The state of blood volume can be determined using both invasive and non-invasive techniques.
The FVA/FAD ratio is a good indicator to assess the volume status of the patient who received fluids for resuscitation.