Abstract:
Introduction: Anemia is one of the most important and vital cases in internal medicine and surgery, and due to its important effects and complications on complete physical health and surgeries, in order to reduce the severity and frequency of anemia by recognizing the factors affecting its occurrence, the relationship between preoperative hemoglobin level and moderate to severe postoperative anemia in patients with complete knee replacement was performed in Imam Khomeini Hospital in Urmia.
Materials and methods: In this cross-sectional analytical study, with the aim of investigating the relationship between preoperative hemoglobin level and moderate to severe postoperative anemia in patients with total knee replacement, after obtaining the code of ethics from the ethics and research committee of Urmia University of Medical Sciences, the researcher referred to the archives of Imam Khomeini Hospital in Urmia and studied the files of 242 patients who underwent total knee replacement surgery in Imam Khomeini Hospital in Urmia.. Finally, the collected data were entered into SPSS 27 software with appropriate coding and analyzed based on the objectives of the study.
Findings: Of the total patients, 204 (84.3%) were female and 38 (15.7%) were male. The mean age of the patients was 66.69 years (age range 37 to 84 years) and the mean body mass index of the patients was 29.03 kg/m2 (body mass index range was 20 to 44 kg/m2). Considering the diagnosis of anemia on the second day after surgery, the best positive point in identifying high-risk patients for hemoglobin before surgery was 13.15 mg/dl (sensitivity and specificity of 73.6% and 72.6%, respectively).
Conclusion: Both preoperative and postoperative hemoglobin levels act as vital diagnostic markers in TKA, influencing not only immediate surgical outcomes, but also cure rates and longer-term complications.