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Background: Catheter failure means that the arterial catheter loses its original real-time and accurate function of monitoring the blood pressure due to various causes, such as blockage, buckling, displacement of the catheter, edema, bleeding, and oozing of the punctured limb requiring catheter removal. However, there have been few studies about the catheter failure and its related influencing factors. The present study aims to explore the status and influencing factors of failed ultrasound-guided invasive arterial catheterization in ICU patients. Methods: 264 patients who underwent ultrasound-guided invasive arterial catheterization from January 2019 to December 2019 were analyzed retrospectively to observe the status and failure of the arterial catheterization. Statistical analysis was performed using SPSS22.0 software. Results: Among the 264 cases with invasive arterial catheterization, 59 cases had catheter failure, the incidence was 22.34%. Single factor analysis showed that the use of analgesics, the protective catheter sleeve, and the affected limb restraints could prevent catheter failure significantly (P<0.05). The result of multivariate logistic regression analysis showed that the affected limb restraints, and the use of analgesics were protective factors against the failure of invasive arterial catheterization (P<0.05), with OR values of 0.454 and 0.450, respectively. Conclusion: Under ultrasound guidance, the incidence of catheter failure after invasive arterial catheterization is low. For the ICU patients undergoing invasive arterial catheterization, analgesics should be used, affected limbs should be constrained, and health education, and communication should be conducted to further reduce the incidence of catheter failure.

Analysis of the Status and Influencing Factors of Failed Ultrasound-guided Invasive Arterial Catheterization in ICU Patients