Surgical Outcomes and Fusion Rate Following Spine Fusion Surgeries in Patients with Chronic Kidney Disease: According to Kidney Function
Abstract PURPOSE. To evaluate the surgical outcomes and fusion rate following lumbar fusion surgeries in patients with chronic kidney disease (CKD) according to kidney function.METHODS. From March 2017 to February 2021, 54 consecutive adult patients with CKD who underwent spine fusion surgery were enrolled. According to the glomerular filtration rate (GFR) categories, 35 patients were classified into the non-end-stage renal disease (ESRD) group (GFR categories 3a–4, eGFR 15–59 mL/min/1.73 m2) and 19 patients into the ESRD group (GFR category 5, eGFR <15 mL/min/1.73 m2).RESULTS. Baseline characteristics did not differ between the groups. The mean number of fused vertebrae (4.9 ± 2.3 vs. 4.1 ± 2.0, p = 0.122), operative time (228.4 ± 129.6 min vs. 160.5 ± 87.5 min, p = 0.113), and surgical bleeding (743.1 ± 630.5 mL vs. 539.5 ± 384.4 mL, p = 0.354) did not differ between the groups. The rates of medical complications (25.7% vs. 52.6%, p = 0.048) and 3-month readmission (8.6% vs. 35.3%, p = 0.045) were significantly different between the groups. The 3-month mortality tended to be higher in the ESRD group (10.5%) than which in the non-ESRD group (2.9%), but the difference was not statistically significant (p = 0.280). The rate of pseudarthrosis was significantly higher in the ESRD group (35.3%) than in the non-ESRD group (9.1%, p = 0.047).CONCLUSIONS. Surgeons should be aware of the high morbidity and the pseudarthrosis when considering spine surgeries in patients with ESRD.