Mormol JD, Basques BA, Harada GK, et al. - A retrospective cohort study was designed to distinguish modifiable and nonmodifiable risk factors of postoperative urinary retention in spine surgery patients. Researchers recruited a total of 814 consecutive patients who had undergone open posterior lumbar laminectomy and fusion in the retrospective cohort study. They obtained pre, intra-, and postoperative characteristics in all patients to distinguish risk factors for postoperative urinary retention. The data exhibited that for postoperative urinary retention, glycopyrrolate use, benign prostate hyperplasia, and postoperative urinary tract infection were independent risk factors. The findings revealed that for postoperative urinary retention, the use of glycopyrrolate is a potentially modifiable risk factor.