Factors Relating blood loss Undergoing decompressive laminectomy in Hua Hin Hospital, Prachuap Khiri Khan Province

Abstract

Background: Lumbar decompressive laminectomy is associated with a substantial risk of intraoperative and perioperative complications. An understanding of predisposing risk factors is important and valuable for the improvement in perioperative blood management.

Objective: To assess the factors affected for blood loss in patients underwent decompressive laminectomy in Hua Hin Hospital, Prachuap Khiri Khan Province.

Methods: The charts of 83 patients with lumbar spinal stenosis and underwent decompressive laminectomy between 1 January 2017 and 12 July 2022 were reviewed. Data were collected and analysed by percentage, mean, standard deviation, t-test, one-way ANOVA and the stepwise multiple regression analysis.

Results: It was found that the mean blood loss was 277.17± 259.08  ml, level of surgery 1 level vs 3 levels (149.84 ml vs 481.90 ml) and 2 levels vs 3 levels (251.38 ml vs 481.90 ml), operative time less than 120 min vs more than 120 min (112.32 ml vs 361.09 ml) and transamin use yes/no (457.50 ml vs 234.10ml) were significantly different blood loss at statistical level of .05. Operative time could be used to predict the blood loss in patients underwent decompressive laminectomy 42.1% with a statistical significant level of .01. There were no statistical significant difference in sex, age, BMI, ASA physical status, preoperative hematocrit, hypertension, aspirin use and NSAIDs use.

Conclusion: The author suggested that operative time can be used to estimate preoperative blood loss and for every 1 minute in operative time the blood loss increases on average by 4.861 ml.