Background: Considering the very dangerous complications of deep vein thrombosis in critically ill patients, its early identification is very important.
Method: This was a cross-sectional diagnostic value study that was conducted on ۷۰ patients over ۱۸ years of age who had lower limb edema or scored higher than ۱ according to the Wells criteria and were referred to the edalatian Emergency Department of Imam Reza Hospital and Qaem Hospital from the fall of ۲۰۱۷ to the fall of ۲۰۱۸; The ultrasound compression test was first performed at two points and then at the third point by trained specialists in the emergency room.
Results: IIn the two-point compression ultrasound examination, it was observed that DVT was reported positive in ۵۹ cases and no false positive cases were observed. Also, DVT was not positive in only ۶ cases and true negative was observed in ۵ cases. The sensitivity, specificity, positive predictive value and negative predictive value of Compression ۲point ultrasound were reported as ۹۰%, ۱۰۰%, ۱۰۰% and ۴۵%, respectively. In the three-point compression ultrasound examination, DVT was reported positive in ۶۳ cases and no false positive cases were observed. Also, negative DVT was reported in only ۲ cases and true negative cases were also observed in ۵ cases. The sensitivity, specificity, positive predictive value, and negative predictive value of three-point compression ultrasound were reported as ۹۶%, ۱۰۰%, ۱۰۰%, and ۷۱%, respectively. In the end, the delong’s test showed that there is a significant difference between two-point compression and three-point compression ultrasound in the diagnosis of lower limb vein thrombosis (P<۰.۰۱).
Conclusion: Based on the findings of our study, it seems that performing two-point and three-point ultrasound in the emergency room for diagnosing DVT has high sensitivity and accuracy, and performing three-point ultrasound is preferable to two-point.
