Results
quadratus lumborum block, SD
HYPERTENSION
After screening, a total of 65 patients were recruited for the study. Three patients were excluded for not meeting the inclusion criteria, and two declined to participate. Sixty patients were randomly assigned to the QLB or control groups. Two patients in the QLB group were excluded for failed quadratus lumborum block, one was excluded in the control group for unexpectedly admitting to ICU. None of the three patients were included in the analysis. The final analysis included 28 patients in the QLB group and 29 in the control group. Patient demographic data (age, sex, body mass index, and education) and clinical characteristics (ASA status, comorbidities, type of surgery, and operative time) were comparable between the two groups (Table 
Demographics and clinical characteristics of the patients I II10 (35.7%)18 (64.3%)8 (27.6%)21 (72.4%) Hypertension Diabetes13 (46.4%)8 (27.6%)15 (51.7%)7 (24.1%) Osteosynthesis Arthroplasty10 (35.7%)18 (64.4%)13 (44.8%)16 (55.2%)The data are represented as the mean ± SD or number (%)BMI = Body mass index; ASA = American Society of Anesthesiologists