Abstract No. 527 High incidence of large-bore temporary hemodialysis catheter thrombosis in patient with COVID-19–related kidney injury

Abstract

Purpose: To evaluate the incidence of large-bore hemodialysis catheter thrombosis in the setting of COVID-19. Materials and Methods: A retrospective review was performed of all patients who underwent placement of a temporary hemodialysis catheter after developing kidney injury after COVID 19 infection at our institution. Data collected included demographic information, procedure related information, and incidence of replacement due to lumen thrombosis. Groups were compared using students t-test for continuous variables and Fisher’s exact test for nominal variables. Results: 64 patients (43M, mean age 63.2 ± 13.3) underwent placement of temporary hemodialysis catheter placement for kidney injury related to COVID 19 infection. 31 (48.4%) of catheters were placed via an internal jugular vein (IJV) access and 33 (52.6%) of catheters were placed via a common femoral vein (CFV) access. Overall, 15 (23.4%) catheters required replacement due to lumen thrombosis despite heplock. There were no difference in age or sex in patients who required replacement to those who did not (P.0.05) [sic]. Of the replacements, 5/31 (16%) were placed via an IJV access and 10/33 (30.3%) were placed via a CVF access, although this difference was not statistically significant (P = 0.18). The average time to malfunction/replacement was 7.8 ± 4.8 days for catheters placed via an IJ access versus 3.4 ± 3.3 days for catheters placed via a CFV access (P = 0.055), trending toward significance. Conclusions: A high incidence of temporary dialysis catheter lumen thrombosis was present in patients with COVID-19 infection. This may be due to COVID related thrombosis versus decreased level of catheter care. Catheters placed via a femoral vein access had more frequent malfunction and with shorter indwelling time, although not significant, which may be due to small sample size.