Inpatient Evaluation of Intra-abdominal Pressure Completed With a Urinary Catheter as Compared With Ultrasonographic Vessel Measurements

Abstract

Background: The purpose of this study was to evaluate the diagnostic value of ultrasonography as compared with intra-abdominal pressure (IAP) measured with a urinary catheter. Methods: This was a cross-sectional study. The participants consisted of 146 patients hospitalized in the emergency wards of two hospitals in Isfahan (2017-2018). Following measurement of IAP through a urinary catheter, ultrasonographic measurement of the inferior vena cava (IVC) diameter, internal jugular vein diameter, common femoral vein (CFV) diameter, and ratio between the IVC and abdominal aortic diameters was completed. Correlation between these methods of measurements for IAP was investigated. Results: There was a significant positive correlation between intrabladder pressure and the right internal jugular vein (RIJV) and CFV ( P < .001, R > 0). There was also a reverse significant correlation between intrabladder pressure and RIJV, IVC, IVC:aorta diameter, systolic blood pressure, and tricuspid annular plane systolic excursion ( P < .001, r < 0). RIJV, CFV, and tricuspid annular plane systolic excursion were suitable predictors for the estimation of intrabladder pressure or IAP ( P < .05), but IVC, IVC:aorta, and systolic blood pressure were not suitable factors for estimating IAP ( P > .05). Conclusion: Ultrasonographic measurement is a noninvasive method for determining IAP.